2022 Hyundai Ioniq 5

The iccu in the car failed. it immediately limited the speed of the vehicle to 25mph. there were no warnings, it happened all at once. i had to drive on the shoulder of the interstate to the next exit. obviously, driving 25 on the shoulder while cars passed me at 65+ was not a safe situation.

Interior driver's side door handle broke off. the driver cannot open the door without lowering the window (electrically operated) and reaching outside to pull the exterior door handle. the car must remain of to do this (if off, the window cannot be lowered). i deem this to be extremely dangerous in the event of an accident when the car cannot be started; the driver is stuck in the car.

Iccu failed while driving. risk was that i suddenly had to pull over safely, as my car would no longer accelerate. this is a known issue, yet they haven’t fully addressed it over years. i had it taken in for recall fixes, and the part still failed 2 weeks later. there was no warning before it happened. but failure signs appeared after.

My ev’s iccu failed. it has since been fixed and is not available for inspection. yes, my safety was at risk because my speed was suddenly limited away from home and i had to get my family home. after a wait of about 3.5 weeks, the dealer confirmed it was an iccu failure and replaced the iccu about one week after that. there were no warnings until the failure occurred. i believe hyundai’s iccu problems are well-known, but want nhtsa to be aware.

Over the two years i have owned this vehicle i have had to replace the windshield three times. i am on my fourth windshield and have three chips/crack already. i have never experience crack/chips like this or at this frequency. i am at a point where i am concerned the getting my windshield replace will cause my insurance to increase because the frequency and expense. because of have a heads up display the windshield cost up to $1,500 to replace and calibrate. i drive my vehicle on paved roads and the highway only. there are many reports online for similar issues.

Vehicle information: year/make/model: 2022 hyundai ioniq 5 se awd vin: [xxx] mileage at issue onset: ~18,000–22,000 miles purchase date: april 2022 ownership type: purchased new, paid in full component affected: electrical system → integrated charging control unit (iccu) / charging system problem description: i am reporting a persistent and unresolved charging system failure involving the iccu (integrated charging control unit) in my 2022 hyundai ioniq 5. this defect has rendered the vehicle unreliable and currently inoperable, leaving me without safe transportation for myself and my infant child. over the past year, i’ve brought the vehicle to the dealership more than 10 times, including 6 visits in just the last 3 months, due to charging issues that were supposed to be addressed via multiple recall campaigns (e.g., campaigns 228, 997, 9a1, 9b5, 272, tcp). despite these attempted software and firmware updates, the issue persists and culminated in a total failure to charge in march 2025. the dealership confirmed iccu failure again, but advised that the part is on indefinite backorder, with no timeline for repair or safe operation. this defect is dangerous, particularly as it can result in loss of power and stranding, with potential risks to driver and passenger safety. hyundai is aware of this widespread issue among ioniq 5 owners but has not issued a permanent fix or offered viable alternatives to affected consumers. hyundai denied my lemon law claim despite substantial repair documentation and admitted iccu defects. i have filed with the bbb auto line and il attorney general. i’m now preparing for legal action. this is not just a consumer issue — it’s a national electric vehicle safety issue involving hyundai’s inability to resolve a known, system-wide defect in a core safety component. attachments: available upon request: repair invoices, dealer assessments, hyundai’s denial letter, lemon law filings. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

The iccu on my 2022 ioniq 5 se awd failed during (or immediately after) using a public level 2 chargepoint charger.

My vehicle was affected by recall 272 and in december 2024 only the software for the iccu was updated. now the iccu is bad and hyundai wants to give the run around and say that my vehicle wasn't affected by the recall. it clearly was and they need to make it right. my car is currently sitting at the dealership that i bought it from and i feel like they are not trying to do anything to help. i have called each day to get an update and all i get it, "we are still waiting". i am beyond frustrated at this point.

On january 31, 2025, my 2022 hyundai ioniq 5 experienced a failure with its iccu resulting in the vehicle to lose all power and become unable to be turned on exposing myself and others to conditions where the vehicle could become a serious safety hazard due to its complete lack of power. this occurred despite the application of the nhtsa hyundai recall 272 only two weeks prior to this incident which was supposed to prevent this serious safety defect from occurring. the vehicle's 12 v battery was subsequently replaced allowing the vehicle to display a "check electric vehicle system" warning. the dealership has since confirmed this as the iccu defect. no warnings or other messages preceded this incident.

The contact owns a 2022 hyundai ioniq 5. the contact stated that the electrical charger was overheating, and the 12-volt battery was draining without warning. the contact stated that while charging the vehicle, the contact heard an explosion. the contact stated while driving 20 mph, the message "stop driving immediately - return to dealer"; the check engine warning light illuminated, and the vehicle experienced a loss of automotive power. the contact stated that on one occasion after turning off the vehicle, the battery remained active for 3 days, causing the battery to become drained. the vehicle was taken to a local dealer where the vehicle was diagnosed and the contact was informed that the water pump, the ev battery, the charge point, the inside batteries, the sensors, the navigation system, were faulty and needed to be replaced. the vehicle was repaired; however, the failure persisted. the manufacturer was notified of the failure. the approximate failure mileage was 65,000.

My 2022 hyundai ioniq 5 has experienced numerous 12v battery failures since early 2024. i ended up having to replace the 12v battery five separate times. the car fails to start with no warning. it has stranded me while transporting a pregnant spouse and a sick infant. each failure required a tow and service visit. hyundai claims “battery case corrosion” is to blame, but this is clearly a systemic electrical defect affecting many owners. this is a critical safety issue for families relying on the vehicle in emergencies. this is a safety and accountability issue affecting many families.

15 miles south of crescent city california, "check ev system" warning displayed, and power immediately tapered to a crawl in 30 seconds or so. no earlier warnings appeared. car was towed to northwoods hyundai in eureka where the problem was identified as iccu failure. no parts appear to be available, and car has been sitting in the elements now for over 6 weeks, 300 miles from home. no repair date has been indicated, and the new iccu is still back ordered.

Driving on the highway/freeway, received an error message on dashboard "stop vehicle and check power supply". the car slowed down, max speed around 45 but thankfully my hazard lights still worked and i exited the next exit. i've heard i was lucky as some people with the same problem - the car goes into "limp" mode and slows down to 5mph or stops completely. very unsafe on a highway for everyone. dealer has checked the vehicle and states it's an iccu problem

Hyundai ioniq ev's have a continuing issue with a component called that "iccu". the iccu and high voltage fuse failed even after two recalls meant to monitor that problem and update the software. luckily, mine failed in my driveway at home which did not put me in immediate risk. however, many people have this part fail while driving on roads and highways with zero warning. there have been two iccu-related recalls that my car has had. when i started my vehicle i heard a "pop" and then the dashboard said "check vehicle electrical system" and then shows the "limp mode" icon allowing to drive the vehicle at a slow speed to safety.

Recall 272 was addressed on dec 31, 2024. iccu and fuse replaced; software updated. on 4/26/2025, 'low voltage on the 12 volt battery, stop safely’ warned came on when i tried to start the car. the car was used several times earlier in the day and is used daily (i.e., does not sit idle). no other warnings were noticed prior to this failure.

The contact owns a 2022 hyundai ioniq 5. the contact stated while driving approximately 25 mph, the vehicle lost power with the message 12-volt battery low. the vehicle was towed to the dealer and was repaired under nhtsa campaign number: 24v868000 (electrical system) and 24v204000 (electrical system). the contact stated that approximately three weeks later while the vehicle was parked, the message 12-volt battery low was displayed on the instrument panel. the dealer was contacted, and an appointment was scheduled three weeks in advance. after driving the vehicle to the residence and the vehicle was parked, the vehicle failed to start. the battery was recharged for 15 minutes, and the vehicle was able to start. the vehicle was towed to the dealer; however, the vehicle was not repaired. the manufacturer was informed of the failure and opened a case. the failure mileage was 4,000.

Iccu failure resulting in inability to charge or drive. thankfully, occurred while pulling into driveway as there were no previous warnings and app still indicated that “all systems normal”.

Leaving an appt and the car gave a battery ! warning. while is was looking for a place to pull over the stop check vehicle electric system. i pulled into a parking lot when the turtle came up and i was barely able to back into a space. the car was dead within 10 mins of leaving until i parked. i commute daily on an interstate and that would not have given me much time to pull of the interstate to a safe location. longer warning is needed. dealer has the car and confirmed it is the iccu unit and no eta on the part. yet they are selling 2025 ionic 5.

Iccu failure. fortunately only 1-1/2 miles from home. car towed to dealer.

Iccu and high voltage fuse blew suddenly and without warning on a 50 mph poorly lit road before sunrise. vehicle immediately entered limp mode in traffic. car could not make it safely back home before losing all power in the middle of the road (no warning was given that limp mode was about to fail it just stopped with all screens still on).the dead 12v battery (which the iccu failed to recharge) made the car completely immobile once it turned off even for towing purposes. put my safety as a driver and those on the road with me at risk with the vehicle drastically slowing down in the middle of travel with no way for others to pass me. problem confirmed as the iccu failure by dealer after finally restoring enough power to get the vehicle in neutral to be towed. the pending recall on this vin is only pending because it is still sitting waiting for the replacement part a month later. no eta on a resolution as hyundai has stopped responding to requests for any information on timelines other than "eventually it will be replaced". all previous recalls for this problem were completed but were only software updates to "potential lower chances of occurrence". issue is a very known hardware issue and is very well documented online and local dealers are extremely familiar with it, but hyundais solution is only to check if the part has already failed and a software update that does not fully prevent the failure in the future. issue still occurred. no prior warning or behaviors were given

I started my car up right after charging on a rainy day at 2500 miles exactly and got 5 warnings. check battery, lane assist warning, abs warning, parking brake warning, forward collision warning and bling spot collision avoidance warning lights were on. more or less all these systems triggered a fault. i tried turning it off and on to no luck. as i drove to the dealer my breaks became steadily lighter and lighter with the manual break even clicking at times. my breaking distance was doubled by the time that i got there. other owners are seeing the same issue. it sounds quite similar to the kona electric recall (20v-748). my car is unsafe to drive.

We just purchased this vehicle and i found this issue. we have not had any accident. this is just an professional observation about a potential issue. the rear carpet mat has a slick and very smooth rubber underside. this factory carpet liner sits on top of the factory carpet. with the rear fold down seats in the upright position, there is no problem but the liner does slide easily around as there is no way to attach it to the regular carpet. i asked the dealer who dosen't seem to be interested in helping with any other issues including this and they suggested that i go to walmart and buy a stip of velcro and stick it down. paying over $58,000.00 for a car, i'm not about to do this as it is something that should have been caught in the design process. the problem will be when the rear seats are in the down position and someone puts a heavy object like a cooler filled with ice and drinks or a heavy tool box on the back area of the carpet liner. if you have to apply the brakes quickly or get into a accident, the article will be shooting forward on the liner very quickly and possibly striking the driver or passenger seat back or possibly in the back of their heads. the object could also move into the front seat area. hitting the seat back or driver with this added force and or weight will be just more dangerous added that the air bags could possibly be going off. it would be like getting hit 3 times in a accident. first by another vehicle, 2nd with the air bags and 3rd from behind with whatever you put in the vehicle rear.

Following dc fast charging, i found the plastic cap (dead front) on pin #7 became dislodged and is missing. this missing component could expose the operator of the vehicle to potentially harmful electrical current when charging.

Following dc fast charging, the deadfront on the charging pin became dislodged and is missing exposing the conductive part of the pin to possible electrical shock to the operator.

The contact owns a 2022 hyundai ioniq 5. the contact stated while driving at 80 mph the contact was pressing on the brakes while approaching a red light. the contact stated the vehicle would not stop, he pulled on the hand emergency brakes to stop the vehicle but the vehicle would not stop causing the vehicle to rear ended the vehicle in front of him and causing that vehicle to lose control and hit another vehicle. the contact was not injured and he was unsure if anyone else was injured. a police report was filed. the vehicle was towed to the dealer where the vehicle was diagnosed and the contact is unsure of the diagnosis. the vehicle was not repaired. the manufacturer was not contacted. the failure mileage was 11,200.

The contact owns a 2022 hyundai ioniq 5. the contact received notification of nhtsa campaign number: 22v324000 (parking brake). the contact stated that while the vehicle was parked in a parking garage, the vehicle rolled away and crashed into a wall, causing damage to the front end. the vehicle was not diagnosed nor repaired by an independent mechanic or dealer. the manufacturer was not made aware of the failure. the failure mileage was approximately 700.

The contact owns a 2022 hyundai ioniq 5. the contact stated while attempting to enter the vehicle, the door failed to unlock. the contact was unable to unlock the door with the key fob but was able to unlock the door manually using the spare key. the contact stated that the main battery was not charged fully. the vehicle was not diagnosed. the manufacturer was contacted and a complaint was filed. the failure mileage was 889.

Vehicle parked and unattended. shifter control unit failed and vehicle rolled away. vehicle front damage.

Involved in a minor collision. rear ended another car accelerating from a stop light (low speed). forward collision warning did not activate. auto braking did not activate. no airbag deployed.

The contact's father owns a 2022 hyundai ioniq 5. the contact stated that as her father attempted to place the vehicle into reverse(r) while in park(p), the gear shifter failed to operate as needed. as her father exited the vehicle with the gear shifter in the park(p)position, the vehicle accelerated on its own into his garage. the air bags did not deploy upon impact. the contact's father was not injured and a police report was not filed. the garage door and pillar were damaged, as well as, the vehicle's driver-side door. the vehicle was initially towed to the dealer where the vehicle was inspected for the failure. the inspection found no defect with the vehicle and claimed that the failure was a result of human error. the dealer then drove the vehicle to a nearby independent collision center where the vehicle was repaired. nearly two months after the repair, the contact stated that while in the vehicle with her father, the vehicle failed to move out of the reverse(r) position after backing out of the driveway. the contact stated the gear shifter eventually moved after multiple attempts and restarts. the dealer was notified of the failure and the contact later informed her that there was a recall on the vehicle for a shift control unit update(recall number unknown). the contact was instructed to bring the vehicle to the dealer to have the update performed. the contact notified the manufacturer about the failure and was given a case number. the vehicle was repaired. the failure mileage was 494. the contact stated that the vehicle accelerated into the door of the garage. also, hyundai eventually reimbursed the contact for the costs of repairs.

When my ioniq5 slowly starts and stops while the brake pedal engages or disengages, a noise, something like "click," comes from the rear passenger wheel house. then, the brakes feel somewhat slippery. i think this has something to do with a transition between the regen brake and the traditional brake. the noise comes up every time i drive. sometimes, i feel very unsafe because i am worried that the brake system fails.

When the vehicle is parked and the trunk is opened, some percentage of the time the trunk does not remain in the open position and immediately closes. if the trunk is then opened additional times it generally remains opened. when the trunk unexpectedly closes the trunk object detection does not work and applies a great deal of downforce. when the trunk finally stops trying to close it remains in a locked position between open and close, it does not reopen. mine and others safety is at risk as the trunk can cause bodily injury resulting from the trunk unintended closing. this issue happens around 50% of the time after the trunk is commanded to open. two dealerships have been unable to reproduce this issue, but neither has tried multiple times, nor have they driven the vehicle to get the error/bug to reoccur. there are no warning or errors that this issue is going to occur. the only warming occurs three seconds after the trunk fully opens, the trunk closing audible rings. this error has persisted since shortly after first purchasing the vehicle.

I parked the car end visited a store. upon turning the car back on, the car freaked out and indicated that i needed to "stop vehicle and check brake system." at the same time, the check engine light illuminated and the car entered limp home mode. cel codes c164286 & c238001 appeared. the next day i brought the car to a hyundai dealer who "fixed" the issue by removing a component that is unrelated to the braking and security systems and the car became drivable again for ~300 miles. i then went on two business trips and returned home. i drove the car and it again experienced the same error upon turning the car on. the braking system still functioned, but all electronic features were disabled by the car and braking involved a lot of force on the brake pedal to get the car to stop. for as long as i've owned the car, it has (infrequently) flashed the "check automatic lane change system" when the car is turned on but the error goes away and doesn't return for weeks to months. the car is now back with the dealer who "fixed" the issue originally but their ev tech isn't always there to look at cars, even though the issue is not necessarily ev related as all cars (should) have brakes. original incident: 9/8/2022, second occurrence: 9/30/2022

The car randomly stops charging when plugged into either of my level 2 home juicebox 40 chargers before it reaches capacity, generally after adding another 4-8% to the battery. it was impossible for me to fully charge the car without plugging it in multiple times. the service people including the ev specialist said they hadn’t heard of this problem, and it was probably due to my charging unit at home. see the attached service and repair invoice . this was not true it is apparently a well-known defect in the hyundai and genesis cars using this platform and hyundai is aware of the issue. it is not a problem with my charger. it happens whether it is hot or cold and generally when it is cooler as we only charge the car at night. please note the following: 1.saying this was a unique isolated problem was not accurate as this is a problem with many hyundai and genesis cars on this battery/charging platform. the hyundai forums are full of these accounts, and they occur with all different types of chargers. for instance, see: a.https://www.youtube.com/watch?v=_3eh0btsdng b.https://www.reddit.com/r/ioniq5/comments/wrilke/ioniq_5_stops_charging_randomly_on_level_2_any/ c.https://www.ioniqforum.com/threads/charging-issues.42357/ d.https://www.kiaevforums.com/threads/charging-problem-automatically-stops-charging-at-home-the-charging-for-ev6-failed-please-check-vehicle.3659/page-12 3.the ioniq 5 charges fine on level 3 superchargers 4.i spoke to juicebox and they said other ioniq 5 owners have reported the same problem in fact before i even mentioned the car i had, when i mentioned the problems, the technical advisor said, “do you have an ioniq 5?” he showed me downloaded graphs that show that the ioniq 5 halts charges prior to being fully charged even though the charger is delivering power to the car. 5. i called hyundai and they said they would look into this, but other people have received the same response, but nothing has been done

Hyundai describes the lack on rear window wiper on this hatchback/suv as handled by the 'air wiper' the include air ducts allow for. the problem is that this 'air wiper' only works if it is actually actively raining and you are driving at highway speeds. at any other time the rear window is almost always dirty and has no way of being cleaned while driving the car. one would need to pull over to a gas station to clean the window if on the road. not sure you have a resolution section but the resolution would be to require hyundai to install a rear wiper with wiper fluid mechanism.

The car started turning to the right on the freeway. suddenly, alarm started going off and acceleration diminished.

I was driving on the highway using advanced highway assist and the car became completely unresponsive. i was traveling 75mph on a major highway with a semi behind me and one to my right in the slow lane. the car stopped accelerating and i was unable to resume driving. i was forced to coast to a stop on the side of the highway. i had my daughter with me and were i not able to safely maneuver between the semi trucks, we could have been killed or seriosuly injured in a high speed crash.

The car randomly drains the 12v battery. twice it wouldn’t turn on when i had appointments to go to. the dealership service department has had my car since 10/27/22. they’ve replaced a bunch of parts & can’t fix the issue. i would occasionally get battery discharge warning messages when starting the car.

On february 6, 2023 at approximately 9:50 a.m. i was driving my hyundai ioniq 5 sel northbound on ca highway 135, santa maria, when i heard a loud pop coming from my car. within a few seconds my car lost speed rapidly, from 55 mph to 25 then a second later 22 mph . i tried to accelerate - there was no response - the car maintained the 22 mph. a message appeared on the right side of the dash board in an orange circle “check vehicle system” with a small upside down triangle with letters ev also inside this circle and a “small orange battery” picture showed on the left. i drove the car onto the shoulder of the road and with my hazard lights blinking, drove a half block making a right hand turn onto miller street to get off the highway. i entered chc medical building’s parking lot. immediately upon entering the parking lot, my car stopped dead, before i had a chance to pull into a parking space. my car was now blocking cars coming in and out of the parking lot. i called roadside assistance and reported the above, the time was approximately 10:19 a.m. a tow truck (aaa) was requested by roadside assistance. after my conversation with roadside assistance, i turned the car on again and got power briefly - i moved the car into a stall space and waited. my car arrived at the hyundai slo dealership shortly before noon. the iccu and fuse failed, and replacements have been ordered but the eta is unknown abrupt loss of speed was very unsafe

I got the new update for my car from dealership, didn't know it effect ego mode, it's really lagging any power, need push accelerator all the way down to get any power, danger for left turn, please look into this thanks.

When charging the vehicle using a level 2 charger, the charging system will often trip for unknown reasons. this can happen after 1 hour or after many hours of charging. if using specific chargers, the charging will restart after a 10 second delay and oftentimes the car will continue to trip and start recharging multiple times. this can lead to heating up of the charging cord and potentially tripping the main breaker feeding the charger. in the car you can change the charging current from maximum to reduced to minimum. the issue appears to happen mostly on maximum and reduced charge, but has not happened on minimum yet. the issue is reproducible on multiple level 2 chargers and appears to be a common issue across numerous other owners. i have attempted to have the dealership investigate, but they are too new and or ignorant to electric vehicles that they won't take my advice on how to reproduce the issue and thus have not been any help. this issue is not related to dc charging which leads me to believe it's either electrical pin related or an issue with the ac to dc converter on the car. besides, not getting the full use of the car i paid for, this issue can leave a user stranded if the charger fails to charge the car when expected, but also could be a potential fire hazard with the excessive heating of the charging module and associated charging cords. in the attached photos you can see how often the car charging will trip as i get a notification in my phone app each time it stops charging. if you're inside the car watching the dashboard when this happens, it will flash check ev system very briefly while it trips and restarts. no actual codes are thrown though.

The contact owns a 2022 hyundai ioniq 5. the contact stated while driving 59 mph, a warning message advising to stop the vehicle due to low battery was displayed; however, the main battery was fully charged. the instrument panel lights turned off and the vehicle decelerated to 23 mph. the contact veered to the right lane. while driving to the dealer, the vehicle stalled. the vehicle was towed to the dealer, where the integrated charging control unit (iccu) assist, and the high voltage fuse were upgraded. additionally, the battery was replaced. the vehicle was not repaired and remained at the dealer. the manufacturer was notified of the failure and informed the contact they could not provide vehicle rental assistance because the dealer was unwilling to assist. the failure mileage was approximately 28,000.

The car suddenly cut speed to 20mph while traveling at around 40mph. no matter how hard i pressed on the accelerator, it did not go over over 20mph. the dashboard also said speed limited to 20mph. i had to pull over on the side of the road. turn off the ignition. then turned it back on. then the car resumed to operate as normal. luckily there were no other cars around so i could safely pull over. this could had been disastrous if it cuts speed again when i’m driving at 65mph on a busy freeway. i feel unsafe operating this vehicle because i’m afraid this will happen again in the near future.

Heard a "pop" sound and the car shortly after said "check ev system." a few minutes later the car beeped loudly said "stop vehicle and check power supply." a odb scanner reported a p1a9096 code. this issue makes the vehicle inoperable with little warning.

I was doing a 3-point turn in the driveway, and heard a pop sound from under the rear seats. a warning light came on in the dash, after a little bit of time the warning changed into an error that stated pull the car over and do not drive. obd sensor reported codes p1a90 and p0c17. car also went into "turtle" mode preventing it from being driven normally. had it towed to the dealership, but took 2 weeks for them to inspect it. once they got to it, they quickly determined it was a blown high-voltage fuse, and a fault in the iccu (integrated charging control unit). was told there is a national backorder on the iccu and no eta on delivery. i was also told i am one of three ioniq 5s waiting for a new iccu. i've seen many reports online of many ioniq 5s having this same issue, and very long wait times for iccu replacements.

We were driving vehicle on a neighborhood street with a speed limit of 45 miles per hour. when we got a "high voltage fault warning" from the car. i continued to drive about 10 second more and got a second warning. a different series of warnings appeared the last one being "please pull over and check your electrical system". we pulled into a neighborhood street, turned off the car. we decided to try to make it home which was less than 1/2 mile. once i restarted the car, both messages cycled through the dashboard. then the car lost the ability to accelerate past 25 miles per hour, no matter how much i stepped on the throttle.

The ioniq 5 has a one pedal driving mode, where the car will come to a complete stop without needing to press the brake pedal, similar to other ev's. in this mode, the gas pedal operates differently then in a conventional car - pressing the pedal approximately 1/3 of the way down represents neutral, where the car coasts. pressing the pedal less then that - between 1/3 and not pressing it at all, applies braking power to the car, either through regenerative braking or the application of the physical brakes. the issue is, the brake lights on the rear of the vehicle do not light up when the gas pedal is depressed any amount. if you press the gas pedal as lightly as possible, the car will brake a fair amount but there is no warning to driver's behind that you are decelerating. i have twice been almost rear-ended, both times while slowing down in one pedal mode. i suspect the lack of brake lights until you take your foot fully off the gas pedal is a contributing factor. other ioniq 5 users have experienced the same issue.

Car is 13 months old, 13,xxx miles. driving car at 60mph we heard a bang from the rear of the car and lost power almost immediately. car displayed warning "check electrical vehicle system." we shut it off, then restarted in limp home mode, warning now said "stop vehicle and check power supply." we then turned off the heater and the car got to 55mph and i could get the 5 miles back to home. the 12 volt batter no longer charges, the car will not accept a level 2 charge. it was towed to hyundai for repairs. research suggests that the integrated charge circuit unit (iccu) and the accompanying 450v/40 amp fuse are both bad.

Charging with level 2 / 240 vac charger stops frequently after 5 months of ownership. car will not complete charge. seeing on message boards that this is common problem with this model.

I was driving to my parents house when suddenly a message popped up on my driver screen saying that the electrical system has a problem. driving a little more to reach my parents house and it starts saying to stop and check power supply. we ended up making it to my parents house and decided that it was unsafe to drive anymore with the error message going off. i called a tow truck to tow it back to our dealership in fremont. when the tow came, i thought we could drive it on the bed but turns out the vehicle wouldn't start. we jumped the 12v battery and found that we could put it in neutral and somewhat drive it until it drained the external battery used to jump the 12v battery. with the car stuck halfway on the bed, we managed to put it in neutral and pull the car up using the tow's harness. took it to the dealer and after a few days they said a fuse blew and that something called the iccu was bad and needed to be replaced.

When driving on the interstate the collision avoidance system will falsely trigger around 5% of the times going under overpasses or road signs. the vehicle rapidly decelerates using regenerative braking.

Was in the middle of driving when a loud alert sounded and the dashboard showed the error "stop vehicle and check power supply". the car otherwise behaved normally. i pulled into a parking log, looked at the only thing i knew how to look at (12v battery), confirmed it was still plugged in, and turned the car back on. the error was still there, but now the car wouldn't go over 26mph. i limped home, called a tow truck to take it to the nearest hyundai that services electric vehicles, and they told me they'd have to replace the iccu, which is backordered.

The car shut off while driving cause of a 12v battery issue. imagine turning onto a major road just for this to happen. car wouldn't go above 25mph and close to it's death it wouldn't go above 12 then just stopped. i couldnt lock it, i couldnt turn it on. i couldnt even move it from drive to park. how is this safe?!

After a few minutes of driving, the vehicle presented a warning "check electric vehicle system" and then got really slow. we were able to limp back home, where it is now parked. hyundai has not had availability to diagnose the issue.

Hi! my vehicle went under a recall repair last month. once completed, the acceleration significantly decreased in the eco drive train mode. the other modes are working as before. i have been advised that this recall service was required by the ntsb. there are reports of this occurring on credible websites as well. i did report it to hyundai, they didn't believe me. so, i am reporting this to you. please fix my car!

The 12v battery died because the electric battery drained it. ultimately, the electric battery is dead on a 1 year old car and needs replacement. the night before the failure, the car had 145 miles and drained the battery to 83 miles. prior to that and an ongoing complaint to the dealership from november until this point, the range went from 245 miles per charge to 190 to 219 miles per charge. the 219 was after a system update in january.

The car displayed an unforeseen warning and shut down in the middle of traffic around 720am, february 2nd 2023. shut down vehicle and restarted, battery light came on along with other warnings. moved vehicle to adjacent parking lot and towed to hyundai dealership same day and have not been given a definitive answer nor an expected repair time, we’re in the 9th week….still no answers.

The car was driving fine, and an error popped up indicating to pull over and check battery. as i am going to pull over a red flashing indicator pops up saying “pull over and check battery”. as i start to pull over the car speed drops to 25 miles per hour and fully dies as i make it to the side of the road.

On march/17/2023 @24962 miles integrated charge control unit failure + 30 amp fuse. hyundai corporate said parts back order may---june/2023 time frame. 3 inch orange circle came up on my dash with red triangle saying pull over immediately! i was two blocks from dealership and with no problems drive to the service advisor where it died in front of them. service advisor guessed that the pop i heard just before the circle appeared was the fuse and i drove in on the 12volt battery. i am in the buy back process with hyundai corporate case#21170992

Pulled out of my driveway and halfway down the street, warning message pops up on display, "check electric vehicle system". turned down another street to head back home and receive another warning with audible beeping "stop vehicle and check power supply". dealership says its a known issue and to not drive it. must be safety related or driving it wouldn't be a problem.

Windshields in the vehicle keep breaking with little to no reason. in 6 months of ownership we have fully replaced 3 windshields. windshields provide a line of protection for the driver and passengers when the vehicle is being operated. continuous breaking of a windshield indicates a bigger safety issue with the manufacturing of the car/glass. in one instance there was an audible screeching sound and the glass suddenly cracked for no reason. the windshield has been replaced and safety system recalibrated 2 times in 7 thousand miles ownership with the 3 appointment scheduled for completion in a week.

We've owned the car since new, just over one year. the car was performing well one day and my wife went to her evening work. when she returned to her car around 6pm, the car wouldn't respond to the key fob and the door wouldn't open. she was able to open it with a key, but the car wouldn't start. it's a fully electric car and nothing lit up or made a sound. the traction battery had ample charge, but she called hyundai and the car needed a "jump" from a repair vehicle that was called out, much like an ice car needs the occasional jump...we assumed an interior light was left on, but the car's app didn't inform either of us of any issue prior to this...the same exact scenario repeated itself about one week later and we had the car jumped again and brought to our dealer, burns hyundai in marlton, nj. they determined that "nothing was wrong" which made no sense to me. my wife picked up the car and approximately one week later, the exact same thing happened again. this time we dropped the car off at the dealer where it's been for nearly one month. with their customer service lacking and information not forthcoming, i had to go to the dealer myself to get some answers. it seems the computer was telling then some codes were coming through about the battery, but nothing more. it didn't need replacing and they couldn't replicate the problem over a period of weeks...there are many online reports of this car having 12v battery and iccu issues. our dealer has several ioniq5s awaiting iccu replacement for the same problem as my car, but they "can't get the part from hyundai". while our car at times won't start, they aren't seeing that in their shop now, awaiting repairs on cars that apparently die when driving also with 12v battery problems. our car is a lemon and we intend to retain counsel to assist us in its repair. https://www.theautopian.com/why-everyones-favorite-electric-car-keeps-stranding-its-owners/?fbclid=iwar3yngwvktaghgpd7hbz79tov-ui1myldmyrwdzcojzflarsg80b_6njlpk

Suddenly whilst driving, i heard a soft "pop" and emergency alert sound and message were displayed. car lost almost all power, but was able to move forward at 12mph to park in a safe place. car became fully inoperable and required a flatbed tow to dealership. was diagnosed as an iccu problem (associated with both 12v battery failure and possible bluetooth related battery drain). car has been in shop for 6 weeks, waiting on parts. no eta from hyundai. if this had occurred 3 minutes later i would have been driving at high speed on the interstate in morning commute traffic. prior to the "pop" there was no warnings or errors or problems - car worked perfectly.

Driving the car on the highway, ev warning light came on dash. car went into turtle mode for approximately 5 miles. then the dash board changed to shut car down now. car would not charge at home. had to tow it to the dealership. car has now been at the dealership waiting for parts for 5 weeks. iccu and a fuse need to be replaced.

12 volt battery not recharging from the main ev 77kw battery. this makes it so that car systems cannot start that started late march and went into the dealer april 14,2023, after it happened a dozen or so times.

I was driving to the dealership due to an unusual message. i was on a main street less than 2 minutes from home when an alert came on the screen that said "critical 12v system" i believe. the screen went off shortly after so i was unable to fully capture it. within 20' the car stopped itself on the road and shut off. all systems were offline with a total power loss. i could not turn my hazards on, the wheels were locked and i was unable to move the car. i had to stand outside my car to alert oncoming traffic to avoid me. had i been on the highway when this happened i feel it could have turned deadly quickly, and would have been far worse at night it has been confirmed that the iccu and high voltage fuse had failed. there are many other owners online speaking of the same problem. the error prior to this reported in the car was "check electric vehicle system." no extended details available, and the online app that shows car codes said "all systems normal" and still does even though the car is entirely dead.

On 4/24/23, without an prior warning vehicle suddenly became undrivable. received message: "stop vehicle and check power supply". car could lim along < 25mph for short distances. this condition along with indifferent hyundai roadside assist left me stranded out of state for 5 hours before telling me to find my own way to tow the car. car is at dealership with a diagnosed iccu/iccu fuse issue. to date i am being told that the parts are on back order for 2-3 weeks. based upon online posts by others with this issue, this is not a realistic expectation. to date, hyundai has yet to offer substitute transporation, relief from monthly paments, and reimbursement of all expenses incurred as a result of the loss of this vehicle.

Started car. heard a pop. “check electric vehicle system” appeared on the screen. hyundai arranged for the car to be towed to the dealer. this is likely the iccu+fuse failure that seems to be happening to many owners of the ioniq 5.

Last night i had an update pushed to my car. i pressed ok. today while backing up i heard a slight pop. my car then said check battery . then second alert said stop vehicle and check power supply. others with this car seem to have this issue as well and is taking a long time to fix and resolve.

When using the car in "i-pedal" (one-pedal driving) mode — the highest brake regen setting — the car can come to a complete stop whenever i lift my foot off the accelerator pedal, without touching the brake. while in this mode, when i fully lift my foot off the accelerator, the rear brake lights illuminate as expected, however, i often slowly reduce pressure on the accelerator pedal to come gently to a stop. i've noticed that it's possible (and often the case) that i can decelerate to a full stop without the brake lights illuminating until i fully release the brake pedal (at the very last moment before i stop). this means that i can be slowing down at a pretty significant rate without any indication to the drivers behind. conversely, when using the automatic cruise control (that keeps the car a set distance from car ahead), the brake lights seem overly active and flash on and off quite frequently, especially when going down hills (even if there is no deceleration and the car seems to be coasting). both of these anomalies seem to aggravate other drivers following the car for different reasons, since the vehicle's intent isn't being properly communicated. the lack of expected brake lights when decelerating gently via i-pedal mode seems potentially dangerous. i would recommend that hyundai tune their software so that the brake lights illuminate automatically past a set threshold of deceleration/regen braking (above what would be expected if the car were simply coasting), but not requiring the driver to fully lift off the pedal, since at that point, the rate of deceleration is already uncomfortably high for typical driving.

A few minutes into my drive i heard a loud pop from under the rear seat and then an orange ev system warning message flashed on the display. the vehicle slowed down and i couldn’t maintain speed above about 25mph. shortly after the first orange alert, the red “stop vehicle and check power supply” message popped up on the screen along with an emergency warning sound. the vehicle was towed by hyundai roadside assistance to the nearest certified dealer, which took 1 week to diagnose the car. they just confirmed it was an iccu (integrated charging control unit) failure and would require a replacement iccu and high voltage fuse, which are on backorder with no definitive delivery date.

While driving to work on a 55 mph road (single lane in each direction) my car faulted with warnings for me to pull over immediately and check my batteries. at the same time, the car's speed dropped quickly to a maximum of 24 mph, which nearly caused the cars behind me to collide. after pulling over, i was able to limp into a safe area and call a tow truck. the service shop informed me that my integrated charge control unit and fuse needed to be replaced. i am still waiting for the part to come in (estimated delivery of two months). this issue is not isolated to me; others in social media groups have experienced similar issues with their my 2022 ioniq 5. hyundai is quiet on how widespread the issue is, but given that there is a safety concern when one's auto suddenly slows down while on a highway, i thought it worth reporting.

While driving on highway i got below messages “safety functions are limited radar block warning message” warning message went away after 15 minutes but then “stop vehicle check power supply” warning message appeared and vehicle slowed on highway and stopped after 2 miles. dealer replaced iccu and fuse that controls high voltage (charges 12v battery from main battery).

Likely iccu failure incapacitated vehicle while in motion on highway. vehicle decelerated uncontrollably and would not re-accelerate. shortly thereafter 12v battery warning appeared and vehicle was no longer operable. series of warning lights. “check electric vehicle system” upon car starting, “stop vehicle and check power supply” shortly after starting drive, "12v battery very low" immediately before vehicle went completely dead.

On may 12 i was driving on lake mead hwy when i heard a pop and lost power i pulled over and checked the car and couldn't find any visible issues i was very close to home, the car went into turtle mode and was able to make it home just before everything shut down. the hyundai dealer said its the iccu unit and fuse. no accident or injuries. lucky i wasn't traveling to ca. which i often do.

As i was parking my car i got a yellow warning battery light. it said to check the electrical system. when starting the car the warning light came back on and this time the car went into "turtle mode" where the car won't go over 25 miles per hour. after that the car flashed a red warning light and said to stop driving immediately. i called for a tow and the dealership diagnosed the problem as an iccu and fuse problem. they informed me they have ordered the part but that it make take over a month to get the part in. the car only has 11,000 miles on it and is just over 1 year old.

While driving vehicle, car had sudden and rapid loss of power that resulted in significant decrease in speed. vehicle was nearly in a rear-end collision due to sudden drop in speed. the car is currently being inspected by the hyundai dealership with reported failure of the iccu.

The vehicle does not charge. after multiple attempts by the dealer to fix the issues, the vehicle is still in the shop. i am told it now charges on level 3 chargers (super chargers not available widely) only and does not charge on level 1 and 2. various parts have been replaced but hyundai corporate and the dealer has not been able to identify the issue or fix the problem after 45 days. i have filed a complaint with hyundai and requested that the company buyback the vehicle. no response from hyundai. i do not feel safe driving the vehicle. the vehicle is in repair with lia hyudai of hartford, ct. thank you, bhavani 917-605-9772

Brake lights do not illuminate in 1 pedal driving unless accelerator pedal is fully released. i often bring the car to a complete stop with the brake lights never illuminating until i'm nearly stopped, around 5 mph or less. i often see people ride up behind me quickly and have to slam on their brakes as they don't realize i'm slowing down so rapidly. this can be repeated at any time. i have not spoken to a dealer or the manufacturer about this, nor has it been inspected by any party. there are no warning lights, this seems to be normal behavior, many others have reported on this issue as well. this has been happening since i got the car.

The brake lights do not come on when slowing down in i-pedal mode unless you completely let go of the accelerator, representing a massive safety concern. the drivers behind you do not know you are slowing down even though your deceleration is quite sharp

This vehicle's brake lights do not come on when using regenerative braking. the regenerative braking can bring this car to a complete stop fairly quickly and the brake lights should come on. several near misses of people almost rear-ending me, and a few got mad enough that i feared a road rage incident. this after only owning the car for 2 weeks.

Electrical system not working. the vehicle does not charge. the 12volt battery is completely dead and vehicle does not start. before the vehicle gone offline - it was reporting electrical system is not charging and dead immediately. i towed the vehicle to route 1 south, south brunswick, nj hyundai dealership on may 19th, and still in repairs. the main battery pack was showing 90% charge. the vehicle reported problem in the middle of the driving and completely slowed down to below 25miles before and came to grinding halt. jumpstarting the vehicle did not help.

The vehicle does not illuminate the brake lights when slowing down in ipedal and level 3 regen modes without actually pressing down the brake pedal.

Rear brake lights do not properly come on in certain driving modes (i-pedal). the lights will only turn on if you completely release the accelerator pedal. the problem is, that you can significantly reduce your speed down to a stop without ever fully releasing the accelerator all the way.

Brake lights during i-pedal or 1 pedal driving modes. when under "i-pedal" or 1 pedal driving mode brake lights do not engage unless foot is fully off the accelerator pedal. this is concerning as the vehicle can brake rather agressively with no indicition to the drivers behind you. the brake lights should illuminate when a sufficient amount of braking is occuring, not just when the accelerator is fully disengaged.

This vehicle can use regenerative braking to slow fully to a stop. however, using regen to slow sharply does not activate the brake lights unless the accelerator pedal is fully released. this means that you can slow at a significant rate without alerting vehicles behind you that you are slowing. vehicle should activate brake lights when slowing beyond a specific rate. this has been the case since vehicle delivery (3/28/22) and continues today. occurs at all speeds.

The ioniq 5, like other electric vehicles, uses regenerative breaking. regenerative breaking can be set at level 1, 2, 3, or i-pedal mode. this determines the strength in which the car will engage regenerative breaking automatically when the position of the accelerator petal is raised above the current speed. i-pedal mode is full one-pedal driving, allowing the driver to slow to a stop without use of the break pedal at all. at level 2, 3, or i-pedal, the car is capable of decelerating at a significant rate even when the driver is still pressing down on the pedal. for example, if you consider it as a percentage and take "foot off the pedal" as 0%, and "pedal pressed as far as it can go" as 100%, a driver could be traveling at 70 mph on the highway, with the pedal pressed at around 60%. the driver could then lift the pedal to only 30%, and the regenerative breaking would then slow the car to, say, 30 mph. this deceleration can be very strong when set to a high regen level. however, the break lights do not illuminate unless the driver takes their foot completely off of the accelerator. in i-pedal mode especially, it is possible to decelerate from highway speed to a near stop in only a matter of seconds, without the break lights ever activating. other ev manufacturers illuminate the break lights based on the cars measured deceleration when using regenerative breaking, and do not have this issue. if the driver has driven other evs in the past and prefers the one pedal driving mode, it is likely they will not even know that their break lights are not illuminating during heavy deceleration, creating a significant danger of being rear ended when driving in heavy traffic.

Vehicle will not charge at advertised speeds. vehicle notifies me via phone app notification that “vehicle is not charging. please try again. ensure the vehicle infusions is off and gear shift is in park.” the car only charges if manually adjusted in settings to charge at minimum charging speed. the car used to charge at adversities speed and no longer does ever.

The 12-volt battery that controls everything in the car stopped being recharged by the 800volt battery, eventually causing the car to suddenly lose power and slow to 22 mph on the freeway. i was able to pull over 3 lanes and exit what was fortunately an uncrowded freeway. the car would not exceed 22 mph and soon stopped altogether and could not be moved. the main 800volt battery was at 56% charge, as the 12-volt battery went to 0%. the car was towed to the dealer. after inspection the dealer has confirmed that the iccu system has failed and must be replaced, with a long back order and still no delivery date after 5 weeks. there were warning messages that appeared before the vehicle lost power, saying to check the battery electrical system. there should have been a warning that said “stop driving immediately as the electrical system is failing, and the car may stop even though the main battery is still well charged.”

This is a rampant problem with my car as i have seen hundreds of the same reports throughout the many ioniq 5 forums i am on. 4/22/23 my car died leaving me stranded. apparently, the early revisions of the car i bought in march 2022 has a problem where the iccu and inline fuse will go out over time leaving the car useless and frankly a hazard as i had to immediately pull over when the error message popped up. the issue imho should be a recall at this point. it has been sitting at a dealership awaiting the back ordered parts and hyundai corporate denies that this is an ongoing problem even though i can see all the evidence widespread on the internet. currently in the process of contacting a lawyer about a lemon law/class action lawsuit.

The problem is in "1-pedal" mode (which hyundai calls "i-pedal"). this is an extremely convenient mode of driving in normal operation, yielding very smooth, passenger-friendly (acceleration and) deceleration by avoiding use of the brake pedals altogether. the problem is that the 2022 ioniq 5 will *never* activate the brake lights ("stop lamps") when decelerating in i-pedal mode, as long as i apply any pressure at all on the accelerator pedal. this gives drivers behind me no notice that i am slowing down until i'm almost completely stopped. this seems to meet current dot standards, but only because i'm not using the brakes to decelerate. if i slow down at a similar rate using brakes, the brakes lights do turn on. i recently submitted a similar complaint to hyundai: consumer affairs case#: 21492175. for a more thorough explanation & demonstration, see this video from the technology connections channel on youtube — he has exactly the same model as me (and i independently verified the behavior on my car with a driver following me): https://youtu.be/u0yw7x9u5tq my complaint is to the dot as much as to hyundai: safety will be improved if the illumination of brake lights ("stop lamps") is required no matter what mechanism the driver is using to slow down, for all manufacturers and models (though this will likely only apply to electric vehicles or hybrids). i hope this can be made retroactive, which shouldn't be a great burden as i expect this could be implemented with a software upgrade. i believe the eu has such a regulation for cars sold in europe.

Started vehicle and heard a loud pop with immediate amber warning to check electrical system with 12 volt battery and ev electrical system warning lights illuminated. while driving to dealerships, vehicle slowed abruptly at highway speed and warning message said to stop vehicle immediately. towed to dealership with probable bad integrated charging control unit and high voltage fuse blown. seems to be an issue with many ioniq 5s. recall this vehicle!

Was driving on the highway and got a warning to check electric system, then it asked to pull over due to battery failure. the car's 12v battery died and it wouldn't turn on. had aaa replace battery, and then drove it to the dealership. the power gave out close to the service center and the car moved really slowly. it took the service center to diagnose the issue as iccu failure. it's been 4 weeks and there is no eta on the part.

Charging randomly stops before completion

Called an iccu failure. it's the control unit that charges the 12v battery from the high voltage battery. the unit fails blowing the high voltage fuse. failure of this component causes the vehicle to all but shut down, even while driving. this is known by hyundai. others have said this happens at about 12 months and 10,000 miles. my car was 53/54weeks old and had 9,300 miles. this failure of this part may have also caused my ac to stop working. as pressure sensor on the 12v system that was working before the component failed was not working when i received the car back, resulting in another lengthy repair. i had about 0.7 miles warning, a yellow check ev system lit up, then the whole dash lit up saying to pull over immediately. the iccu was replaced by hyundai with the "2023 spec" version.

The power gave out on the car and hyundai refuses to fix it. they said a part needs to ship over and they give very little updates.

Accelerator failed to engage on two occasions. 5/18/2023: first while driving on highway at 70mph. car slowed down gradually and i pulled onto shoulder. 5/19/2023: again the next day driving 35 mph. pulled off road onto private driveway. on both occasions i turned car off and back on and it resumed normally. fortunately no accident or traffic problem. i brought car to the dealer (country hyundai northampton) to be checked and they could not find a problem.

Car literally died while driving. went from normal speed to 12mph to 6mph to dead. iccu failure.

- ev fuse blown my hyundai ioniq5 ev electrical system stopped function on march 25th, 9 month after we purchased this ev, on a busy highway. it took hyundai dealer 8 weeks to fix this issue. due to the fix report, some fuse was blown. - automatic emergency braking engaged on jun 16th, when driving on hw 90 west bound, road was clean. no vehicle in front of me. the "automatic emergency braking " was engaged. this could be very dangerous if the highway was busy.

This is an electric vehicle that features “ipedal” driving, what hyundai refers to as one-pedal driving. the main safety issue is that when you decelerate using one pedal, which is a fairly aggressive deceleration, the brake lights do not come on unless you lift your foot entirely from the accelerator or apply the brake pedal (which one would rarely do in ipedal mode). hyundai needs to rethink their concept of operations for how their brake lights should operate. people are at risk of getting rear-ended. i didn’t realize this was how the vehicle operated until i was almost rear-ended today. please push them to fix this issue.

Failed ev drive system. error messages of electrical problems and shortly went complete dead. 12 volt battery was dead and won't charge. car was towed to ideal hyundai in fredrick md. dealer reported failed iccu and parts for repair are on back order. fortunately the failure occurred when pulling away from parking. if i had been at highway speed it could have been disastrous.

I received a warning on my dashboard while driving "check electric vehicle system". a few minutes later i received the message "stop vehicle and check power supply". my car would not go faster than 20 mph, and i had it towed to the dealership. they said it was an iccu issue and the part was on nationwide backorder. my car has been at the dealership for 41 days.

On 24 may 2023, i heard a "pop" sound when starting my ioniq5 and immediately received warnings directing me to stop the vehicle and check the battery system. the car was taken to the dealer on the same day and is still out of service. the dealer notified me that the problem is due to an "iccu" issue and that parts are backordered and they do not have an estimated date for the receipt of parts or repair.

On apr 18, 2023, my vehicle had a complete electrical system failure while driving on the local street. when the failure occurred, a warning message along with loud audible beeps was displayed suddenly indicating the vehicle was experiencing an electrical system failure, and we must be pulled over immediately without delay due to safety concerns. the system completely failed shortly after, and the vehicle became unresponsive and inoperable. this post a major safety risk to those inside the vehicle, other vehicles, and pedestrians nearby if the vehicle became inoperable in the middle of traffic. the vehicle was towed to the dealership (stevens creek hyundai, santa clara, california) the following day for inspection. the inspection report indicated a failure in the iccu fuse unit and the 12v battery. this issue falls into the power train defect and repair will be covered under the manufacturer's warranty. the vehicle has been with the dealership for 6 weeks to date (jun 20) without a repair eta. the vehicle was purchased brand new in mar 2022. it was only 13 months new, with 8090 miles at the time of incident. the work order is attached.

I was driving about 30 mph on a secondary road when the vehicle suddenly lost power and speed and a large batter warning light came on on the dash. i restarted the vehicle, and the same thing happened again. we had the car taken to peder hyndai in poway, ca. 858-486-6560. they said that there was a fault with the "battery control module", and that they would have to order parts. they said they had "at least two" other ionic 5s with the same problem. we've been driving a loaner for 1 mo, and still the part hasn't arrived. this was the third trip that day, and there were no problems with the earlier trips. this had never happened before. the car did not make any unusual sound that sticks in my mind during the episode.

The vehicle completely lost power and there was 207 miles left to the charge. the message displayed on the driver's screen read "12v battery voltage low. stop safely" i had no other choice than to stop since the car suddenly had zero power. the car was towed to hyundai dealership on 2/15/23 and i have yet to have the vehicle repaired. hyundai keeps informing me that the part is on order and delayed. i have been waiting a long time for a defective vehicle.

My partner was driving my car on tuesday, may 23, 2023 and received a "check electrical vehicle system" warning. within 30 minutes of receiving that warning, the maximum speed on the car was throttled to 20 mph and shortly after that, the car stopped working entirely. thankfully, my partner was on a residential street when all this occurred and was able to move to safety; however, had any of this happened in a highway driving scenario, the results could have been catastrophic. my car was towed to a dealership that same evening and it has been with the service department since then. the two parts on backorder they are waiting on on the iccu assembly and a high voltage fuse. upon searching for other hyundai ioniq 5 owners with similar issues, various internet forums are filled with reports of similar things happening. at this point, i have been told this part is on backorder for potentially up to 6-9 months and after repeated calls with the dealership and the corporate office, hyundai has not acknowledged the extent of this issue, the potential safety concerns, nor offered any relief for being without my, basically brand new, car for the remainder of this year.

Driving the car about at 45mph then i heard a pop sound from the rear of the car. car displayed warning "check electrical vehicle system." i pull over, shut it off, then restarted it. the "check electrical vehicle system" light stills on then an emergency message displayed 'stop vehicle and check power supply.' when i tried to drive to a safe place i noticed the car would not drive faster than 25mph. if this would have happened in a highway this could have been a safety issue. dealership confirmed that the integrated charge circuit unit (iccu) needs to be replaced.

I was driving and could go no faster than 30 mph. i was very close to a dealership (a few blocks) and was able to make it there before the entire car turned off. an electrical error displayed on the dashboard before it shut down.

Hyundai has admitted that the integrated vehicle charger port overheats when charged at 48a. my vehicle was often stopping charge after only an hour or a few percent, leaving me without enough charge in the morning. hyundai has offered a software "fix" for the problem which downrates the charging speed when overheating is detected, but this is only a bandaid solution and slows the car's charging speed by half, which was not what was promised when the car was sold.

Vehicle charging stops because the port gets overheat while charging on a/c. https://www.reddit.com/r/ioniq5/comments/14g1922/charging_issues/?utm_source=share&utm_medium=ios_app&utm_name=ioscss&utm_content=1&utm_term=1 i have this exact same issue. it doesn't happens when you charge on 32amps evse. but 40or 48amps is the problem.

Hyundai's connected car service (bluelink) suffered an outage that resulted in driver profiles on many hyundai vehicles being deleted/reset. no notice was provided and the profiles were not recovered. as a result, the vehicles did not funtion as expected. driver assist settings were set to default (steering, braking, and acceleration functions included). hyundai provided instructions on how to set up a new profile in response rather than restoring the customer data to their personally owned hardware (car).

The hyundai ioniq 5 advertises quick charging via level 2 (240v) supporting nearly 10 amps. hyundai has acknowledged by issuing a tsb this year that the charging port overheats at high amperage and causes charging to cease before the battery reaches the intended state of charge. the tsb addresses the issue by slowing the rate of charge substantially when the port overheats. as a result, owners are unable to "refuel (charge)" the vehicle at the advertised rates. in addition to the overheating charge port posing a potential hazard, the result is that an uninformed owner may not have necessary charge to reach their destination.

I have installed a hard wired 240v/48 amp evse for charging my vehicle at home. when charging at any current above 32 amps, the charger on the car is apparently overheating and causing charging to stop for approximately 3 minutes and restart charging then stopping again after another 30 seconds or so. hyundai has issued a "fix" for this which simply throttles the maximum potential amperage delivered, resulting in delayed charging of the main vehicle battery. there are no warnings in the vehicle when this occurs, i just get a notification in the hyundai app that charging was stopped. my only current workaround is to drop the amperage to 32 amps, which is 33% slower charging than i anticipated when installing the evse. had i known of this issue, i could have opted for a less expensive and easier install method, but hyundai issues no such warning when you purchase the vehicle.

Ioniq 5 continuously fails to complete charging when on level-2 evse. charging port and plug feel extremely warm to the touch, even in cool ambient weather. multiple ul-listed charge cables yield similar results, while working perfectly well with other evs.

Was driving the vehicle in a local road and felt sudden drop in vehicle speed. had to press hard the acceleration pedal to avoid any collision from behind. the vehicle could not gain enough speed in a ~45~60mile speed zone and driven ~2miles slowly to work place. the vehicle had to be towed to a local delearship as they suggested. the warning message was 'stop vehicle and check power supply' immediately after and changed to 'check ev system' when started ~1hr later at the time of towing. the local dealership diagnosed it to be needing a new iccu board, integrated charge control unit, which is in back order for ~2weeks (vehicle is still at dealership). in hindsight (after hearing recent news on iccu failure of ioniq5), the vehicle had a related issue in feb 2023. at that time, the vehicle electrical system got blacked-out in my garage (it didn't respond to any button pressing with completely dark dashboard screen). it was towed to a local dealership since jump jump start could not fix it. they replaced a 12v battery for which local dealership could not give me convencing reason for the dead 12v battery .

Vehicle constantly disconnects from level 2 chargers, when charging interface overheats beyond threshold. this is an ongoing issue, and i have had this symptom on multiple chargers so it is specific to the vehicle. it is a common and known issue with the internal charging control unit (iccu), yet hyundai has refused to issue a recall to replace the faulty components. they have issued a tsb which throttles charging speed to minimum when the error occurs, but this is an unacceptable solution due to charging time constraints for many customers. i purchased the car with the understanding that i could charge at 48 amps, not 16, which is where i have to set it to keep from disconnecting constantly. the overheating components could also cause a fire hazard in certain situations.

Level 2 garage charging of car overheats and switches off mid-charge, even with the kwh from the wall charger throttled to hyundai's minimum setting (60%). what was a minor/occasional problem is now a constant problem in hotter summer temperature, and there is no way to charge the car fully.

The car dash board flashed a message: stop immediately. check the electrical system. i drove 1 mile home, called the dealer, was told to have the car towed to dealer. when the tow truck arrived the car battery was totally dead. the dealer said it was an iccu problem, and that they had seen it before. could take weeks, or months, to get a new part!

Car displayed a message "12v battery voltage low. stop safely" and the 12v baatery does not charge in the vehicle. this is a known issue with this car and is currently being investigated for a vehicle recall.

I received a 'check electric vehicle system' notice on my car.i believe this is related to the 12v/iccu issue occurring in the i5's.

While driving, on a busy street in holyoke ma, a stop waning appeared on the drivers display indicating an electrical/power problem. i pulled over to side of road and called a tow truck. car was taken to dealer where they ran diagnostics on the vehicle. diagnostics showed failed iccu and bad cell in 12v battery. replaced iccu and high voltage fuse.

I turned on the car and immediately got a "check electric vehicle system" error, and then shortly after a "stop vehicle and check power supply" error. i located a nearby dealership to diagnose and repair the vehicle, and called a tow truck to take it there. my car is parked in a garage in an alley. after the tow truck arrives in the alley, i turn on the car and get the same errors, and pull into the alley. as i'm pulling into the alley, the car start behaving very eratically, not responding well to the accelerator or steering wheel, and then within a couple minutes the display goes blank, completely black, with some white glitchy pixels periodically. thankfully, i had already put the car into neutral at this point so the car could be pulled onto the flatbed tow truck. once the displays stopped working, the car was completely unresponsive. i was unable to lock or unlock doors by using physical buttons on doors or remote buttons on my key. the power trunk lift gate would not open. in the world of cell-phones, they would say my car was "bricked." completely unresponsive to any input, and the display still black with occasional white glitching flashing across display. the dealership's diagnostics was that there was a malfunction in the integrated charging control unit (iccu). they replaced the iccu and the 12 volt battery and i received the car back from the dealership. everything seems fully operational again.

Charging port overheats when charging at rated amperage on a level 2 charger, causing charging to stop repeatedly. car does not charge consistently over 32 amps, but it’s advertised as charging at 48amps.

Car doesn't charge at stated capacity. charging consistently fails after a short time adding only a few miles to range. reduced charging rate still produces failure. well documented problem across many owners and manufacturer fails to address this major problem with a recall

The hyundai dealer service department has diagnosed my car as having an issue with the iccu and 12-volt batter. it is now in the shop indefinitely as they don't know when it will be repaired. i had an electrical warning light that didn't go away when i started driving. less than two miles from my home, the mph dropped to 20. i managed to drive it home where it failed in my driveway. aaa tried to charge the battery/jump it, to no avail. i had them tow it to the nearest hyundai ioniq 5 dealer. i owned the car one year plus one day when this occurred.

Level 2 charging fails on warm days if charging above 9kw. i am unable to charge my car on days above 80-90 degrees using my 9.6kw (40 amp) level 2 charger, as the cars internal will get so hot to the point where it overheats, and force stops charging. occasionally, i will come back to my car while charging and find it's charging at a much lower speed then it should be. hyundai claims to have a tsb to fix this issue, but it only neuters the cars charging ability, it doesn't actually fix the ability of the car to charge at 40 or 48 amps on a warm way.

When charging at home on level 2 charger at 40 amps, after 20-30 minutes of charging the charge drops from 9.71kw to 5.51kw. previously charging at 40 amps the car would just stop charging completely, but after software update the car charge drops dramatically after 20-30 minutes. research supports similar charging issues with 40-48 amp home chargers. the charge port seems to get overheated and automatically reduces charge speed. the technical service bulletin/software update has not fixed the charging issue.

The car showed 67% battery life. but it would not charge any further. when we plugged it in, the voice would say "charging unsuccessful". the dash had the 'check electric vehicle' system error and when we tried to drive it, we got the red 'stop vehicle' error and alarm. we parked the car, called the dealership who made an appointment to have it diagnosed and told us not to drive it in the meantime. when it was time to take the car into the dealership, i turned it on and got 'turtle mode' and couldn't accelerate past 5mph and had trouble controlling the steering. i got about 100 ft past my driveway and the car completed powered down. it had to be towed to the dealership. when this car powers down, you can't do anything, you can't roll down the windows or unlock the doors or get the car in neutral. the tow truck driver had to use a portable battery and jumper cables just to power the car on so he could get it in neutral which releases the parking park so he could pull it on the flatbed. the dealership said our integrated charging control unit (iccu) needs replaced; the part is on back order with no eta. so, they have our car, and we're driving a rental and paying for gas again.

Iccu charging system faulty. 12v battery was not charged sufficiently. car not operational. part on back order and can take months to repair.

Another iccu / fuse failure......at 17,000 miles, i heard a popping sound and the check electrical system" warning came up on the dash. i pulled over and checked the menus on screen but could not find any way to check my electrical system. i pulled back on the road and within a mile the dash displayed a message to "stop vehicle.....speed was reduced to about 20 mph and i limped a few hundred yards to my office. called 4 dealers and each told me they were aware of the issue but already had a number of ioniq 5's in their service lot but estimated anywhere from 4-8 weeks to "look at it". i found 1 dealer nearby willing to take the car and look at it within a week. praying hyundai recognizes this problem and issues a recall soon.

On monday jun 19 2023 around 7pm pt while i was parallel parking, i heard a pop from the engine area and immediately saw the center console show a warning message (one beep, then no further beeps): “check electric vehicle system” i finished parking and left the car running while i starting to investigate online what this error meant. after ~2 minutes parked i got an active alarm (beep beep beep beep) that said “stop vehicle and check power”. i turned off the car. the battery was at 22% at this time, with about 44 miles of range. bluelink vehicle diagnostic accessed from the in-car infotainment system said no issues found. the myhundai app diagnostic report on my android phone said all systems normal. on advice from a hyundai dealer that i could drive 2 miles home, so i did. when the car started i saw the warning “check electric vehicle system” and made it about 5 minutes before i got the active alarm “stop vehicle and check power” i turned off the car and turned it back on and finished the 5 minute drive home. thursday of the same week, the android app continued to say all systems normal and on the same day i paid to have the car towed to a hyundai dealer. today, july 10th, i finally got a call back from the hyundai dealer that the iccu (integrated charging control unit) was in need of repair and that they have no eta for when the part will come available. i do appreciate that they offered me a loaner car during the wait, however long that will be. i saw on the nhtsa website that there was an active investigation into a similar issue, and wanted to share my story.

Made an attempt to start the vehicle and noticed two messages on the dash as follows 1. "12v battery voltage battery low" 2. "stop vehicle and check power supply" attempted to put the vehicle in drive. the vehicle would not engage in drive mode. shut the vehicle off and made a second attempt to restart the vehicle. this time the vehicle did not start. had the vehicle towed to a local hyundai dealer. hyundai dealer took 2 weeks to diagnose the problem. was advised by the dealer that the iccu module needed to be replaced along with fuses, and coolant. also noticed vehicle having slow acceleration at times after charging. also notice a weird noise on right rear passenger side of the vehicle sounding like fluid pumping at times. vehicle has been at the dealer for 27 days and still not repaired

The charge port in the car overhears when on a level 2 (240v) charger running above 30 amps. this is happening to most 2022 ioniq 5 cars, not just mine. hyundai is aware and they just made it harder to charge over 30 amps. this is incredibly dangerous! they need to recall the associated parts before fires occur. it is unsafe to charge the car at the advertised rate!!

Charging at home with a 240v level 2 charger overheats the car charging port causing a charge failure. this is a potential fire hazard.

My car is unable to charge at the advertised 48a charge limit due to overheating of the charge port. once i start charging, within 30 minutes to 2 hours the car will stop charging abruptly. it appears this is due to the ac inlet port sensor reading 212f degrees when the issue occurs. the car is advertised as having 48a charging and if it’s not capable of this, hyundai needs to resolve it.

Charging port becomes exceedingly hot and vehicle stops charging. the charging end of my cable is extremely hot to the touch.

Got a check electrical system warning and moments later the message to stop the car. was able to pull into a parking lot where the car lost all power and had to be towed to dealer. just received word that i have an iccu failure and the part is on back order.

The iccu (integrated charging control unit) failed while i was out. i had to get the car towed to a dealership and it's been sitting in their lot for over two months. it took them two weeks to even confirm the issue, and the part is on indefinite backorder at the time of writing this. when the iccu fails, the car cannot recharge the 12v battery. this forces the car to not travel above 25 mph and when the 12v battery finally dies, the car will not be able to start. there was no prior indicators that would suggest such a critical component was about to fail, and apparently is such a common occurrence that there is a waitlist for the replacement. my eta has been pushed back 3 times so far.

On 3/22/23, after using my car most of the day, i started my car to leave work and heard a small pop noise and a warning appeared on my dashboard to 'check power supply'. as i was relocating to another parking spot, the car gave an audible beeping warning and another warning appeared on my dashboard to 'stop vehicle immediately and check power supply'. after speaking with the dealership, it was determined that my car had to be towed. i did not experience any loss of power/speed because i was only in a parking lot. the dealership informed me the next day that the car needed a new fuse and iccu, but that the part was on backorder and they did not have an estimate on when they may get the part in. repairs to my vehicle were completed on 5/3/23 (6 weeks) later. hyundai did agree to reimburse me for the cost of a rental vehicle, but did not reimburse me for the gas expenses that were incurred that i otherwise would not have had.

1.we purchased the vehicle (hyundai ioniq 5, 2022 model) on may 20, 2022. 2.the vehicle was acceptable until it started to fail on us while we were on the road, and soon after the vehicle crawled home at limited power and came to a stop, it would no longer even turn on. 3.then started our nightmare with hyundai usa. we called the service department and they told us, based on our brief description of what happened, that our vehicle would be unsafe to drive a single more mile (which was impossible anyhow because it wouldn’t turn on), and to tow our vehicle to hyundai dealership in fayetteville, ar for repair on december 27, 2022 at our own expense. 4. from what hyundai, fayetteville, ar's service engineer named evan told us, they have replaced the fuse no less than four times and it kept blowing when they went to test the vehicle. after the basic fuse replacement, it caused the problem to become worse, and revealed an iccu problem, that then revealed acceleration and charging problems, and the initial fuse problem still persisted. codes kept popping up, and whenever they fixed the current issue, another one would present. long story short, it turned out the vehicle was experiencing “mass power surges,” issues with the batteries, and displaying codes for reasons they were unsure of, causing the basic fuse replacement to “pop.” they even called in a hyundai engineer directly from corporate to try to fix the vehicle, but according to evan, even he had no idea what was wrong with the vehicle and had left with some data.

I was driving on the highway passing an 18 wheeler when suddenly the car decelerated and stop quick and was unresponsive and screen showed electric system malfunctioning. could not moved from left lane on the highway. thanks god that the person behind me at the moment was a police officer who helped me stop the traffic so we could move the the car to the service road. car is on the shop and they are trying to figure out what is going on

When driving for a distance at higher speeds, power will suddenly drop to the zero point btw acceleration and regeneration. you can feel the car start to drag as the power drops. if you press hard on the accelerator to stop it from slowing, it will suddenly jump forward. this has happened now on several long trips where i am constatly fighting with the car to keep it powered and not slipping into the zero zone. when it leaps forward the lane assist will also grab control and make it difficult to control the car. the car also stops slowing consistently when i take my foot off the accelerator and will move/ jump forward more than is typical for an ev instead of slowing the way an ev should as it regenerates. this all happened twice previously on a long trip and today constantly during a three hour drive. does not feel safe!

The car (2022 ioniq 5, an ev) lost power while driving. there was warning at the same time stating that the car is losing power and need to stop for safety. minutes later the car completely lost power and can not be turned on. the car has to be towed to hyundai dealer. it has been 2 months and 2 weeks and the car is till in hyundai dealer's lot without being repaired. we were told by the dealer a control unit need to be replaced and it has to be shipped from korean.

Iccu failure. the car dashboard display alert "stop vehicle and check power supply" while trying to drive to the nearest dealership to inspect the alert, the car was limiting to 25mph, and eventually, the car died completely.

While driving in heavy rain, i got warning: stop and check battery. when i could find a safe place i stopped and read the manual. i could find nothing helpful. my car was 63% charged. this was the 12v battery failing. i was then 5 miles from home. i turned off radio and lights, but could not drive without wipers. at about 2 miles from home the car slowed down. i continued to lose power as the rain got heavier. i was able to keep barely moving until i pulled into my driveway. i got out and locked the car by habit. i realized i needed it unlocked, but it was too late; it was dead. at the end the display read losing power and showed a small turtle. indeed.

My vehicle began having charge failures at 13k miles. it went from working fine to not charging at all. the dealership has told me it is an iccu issue and must be replaced. the iccu is on back order with mo eta. i am left without a vehicle and no compensation.

The draw-tite 76589 was purchased through uhaul canada for my 2022 ioniq5. after a few months of use with a light trailer according to the specifications of hyundai, uhaul and drawtite, it tore of a part of the vehicles frame. after the inspection at u-haul and hyundai dealership, they concluded that the problem occured because the hitch wasn't designed to mount on the specified by hyundai mounting spot, hence it caused the damage. there are many cases like that on ioniq5 forum as well as at different hitch installing companies who used this model. this model is now discontinued, although still sold, and was replaced by a 76632 model which mounts to the right location. horizon global did not contact the customers, not their distributors/dealers and doesn't compensate the customers who contacted them. after 7 months i still have the hitch on the car if you want to inspect it.

Car intermittently stops charging using a level two charger. problem started approximately february 2023. did not happen prior to that date. car will issue a report through blue link app every 2 to 3 minutes reporting charging failure. this alert will happen approximately 50 times throughout the charging process until charging is complete.

Recently - my car has been encountering an issue and it has been slowly getting worse and worse. i have a 40 amp level 2 charger i frequently use to charge my car. i first noticed it a few weeks ago, where my car seemingly stopped charging for no reason. i brushed it off, then unplugged it + plugged it back in and the rest of the session went fine. lately, as temps have been rising i noticed the car failing charging sessions one, or two times per day. after doing some research, it turns out i’m far from the only one having this issue. many other others have been experiencing the same issue as i, and the same degradation. some people who were initially able to charge their car at 11kw, are now only to charge around 5kw, otherwise the cars onboard ac charger gets too hot and ends the charging session. i have started to see my car degrade as well, as i have had to lower my charge rate to 32a. i have tested out level 2 ac charging on other chargers as well to rule out my charger being the problem, and it happens on them too unfortunately. to combat this ac charger overheating issue, hyundai has released a tsb number 23-ev-003h. unfortunately, the only thing this tsb does is kneecap the cars ability to level 2 charge at a decent rate. after the tsb is applied, once the car detects an overheating onboard ac charger, it will throttle the ac charge rate all the way down to around 5kw. this is unacceptable, when owners of the ioniq 5 and 6 were promised a vehicle that is able to do 11kw ac charging, or as claimed on hyundais website, a level 2 charge from 10-100 in 6 hours and 43 minutes. with my car throttled to 32 amps, it doesn’t charge nearly as fast adding hours onto the total time required to charge. this is an issue for me because i do not have a place to come home to every single night to charge my car, i’m only able to stop by the charger momentarily which means securing as much energy as fast as possible through level 2 charging is very important to me.

I was driving and the car suddenly slowed down unable to accelerate much and showed a messaged saying 'check electrical vehicle system‘. the service center says it is an iccu problem. i have been waiting several weeks the part is still on backorder without any eta.

When starting the vehicle i received an error that said "check electric vehicle system". the vehicle seemed to be working fine at slow speeds in the parking lot at work. when i exited onto a city street i realized i had lost normal acceleration and could not go above 25mph. i pulled into a parking lot and turned the car off and on to see if the error cleared. it did not. also received an additional error stating " stop vehicle and check power supply". at that point i called roadside assistance for a tow. the vehicle is now at my local hyundai dealership. their service dept has stated they will take a look at it in 7-10 days most likely.

Charge port on vehicle overheats when charging on ac charger and stops charging. anything above 32 amps. the car is supposed to handle 48 amps.

Hyundai san jose dealership, customer service, told me, the fuse surrounding the lithium battery is broken. this causes the whole car break down, and it is very dangerous to drive. my car has been in this hyundai dealership over 5 months now, hyundai cannot send the parts to san jose hyundai and i cannot drive the car. also the 12v small lead acid battery in the front, broken down a few times. cannot start the car. the whole car shuts down.

When in motion, the “ev start stop”button is still allowed to turn off the vehicle if accidentally pressed. this happened to me while on the highway and moving about 15-20 mph. the vehicle suddenly lose power and wouldn’t accelerate. i could not move the vehicle, without hitting the ev start stop button several times.

The car will only charge at half of the advertised level 2 ac charging rate. it advertises it can charge at 48 amps; however, we cannot charge above 24 amps. if we charge above that rate the charging will stop. the issue appears to be well documented in online forums where if the charging port reaches about 100 degrees c it will fault. there is a tsb they are installing but it just makes it automatically derate to ~24 amps which other than providing 15 minutes of higher power it doesn't at all solve the situation. hyundai has recently stated that they are aware of the issue and they expect people to live with it and re-adjust their expectations; but it is fair to expect the car to perform as advertised. i also don't think any caveats about charging speed for weather or state of charge would be specific to level 3 charging; i am not aware of another ev in existence that doesn't provide its advertised ac charging level. it pretty clearly appears to be defective hardware. we also have friends who bought their car a month later (july 2023) and they are having the same issue; albeit they can still charge at 32amps. to answer the questions directly. - charge port - the cars cannot charge in time advertised making people drive without buffers and could run out of power on trips because they can only charge at half the rate advertised and couldn't charge overnight. - we are getting the tsb that will automatically reduce the charging rate this week. we had to wait over a month for an appointment. - it has not been inspected yet but all they are going to do per the tsb is if we say we have the problem they do the software update. - there are no customer facing error codes. the issue first started in march the first day it was over 70 degrees. we did not have an issue last summer or over the winter. the longest we can charge since then at 40 amps is about 15 minutes. we have never even charged the car at 48 amps which is what it is supposed to be able to do.

Vehicle suddenly had no power on the highway. error messages said to check the power supply. prior to this there were error messages to stop the vehicle and check the power supply. car would not drive more than 20mph. car then died on the highway without any power when attempting to drive to the dealer. problem was reproduced and confirmed by the dealer to be a faulty iccu.

Lost power while driving

While driving on the highway on 8/12 at around 4pm, with another passenger, doing approximately 65 mph i received a "check electric vehicle system" warning on my dashboard. the car showed no prior warnings, no other lights were on. myhyundai app was also showing no diagnostic issues with the car. the car battery was showing a 77% charge at the time. i swerved on to the shoulder, putting myself in danger as this is a really busy highway. i checked the car and could not find anything wrong. hyundai had not contacted me regarding any recalls. i decided to keep driving to see if i could make it home to diagnose the issue. i made it another 20 minutes and as i was about to exit the highway at around 60mph the car completely slowed down to 20mph suddenly, and i was forced to swerve onto the shoulder once again. the car would not accelerate past 20 mph. fearing an accident, i called a tow truck and had the car towed back to my house. there were no warnings lights/signs prior to this event. the car completely slowed down from 60-65mph to 20mph in the middle of the highway and i was forced to make an emergency stop putting myself and my passenger at risk. the car was brought to the dealership on 8/14 which is the first time i was alerted that there had been a recall on my car and that the iccu would need replacement. at no point did hyundai ever contact me via email, text, call, or mail alerting me there was a recall prior to this scary experience. this is gross negligence on the part of hyundai, as my vehicle could have been rear ended and caused a major accident on the highway.

Check electric charge error displayed, alarm sounding, loss of power to the vehicle while driving (limp mode).

Issues with home charging at 40 amps port heats up and stops charging. when i purchased this car they stated it was possible charging at that rate.

When my car is plugged in to charge it keeps stopping the charge. example: starts at 24% and stops at 28% i restart charge and it stops at 47%. each time the charging port on the car is hot. this has happened multiple times. i now have to set reminders on my phone to check that my car is still charging so i can get to work in the morning. i am at the dealer now and they say there is nothing they can do because they have not been notified that it is an issue thank you for your attention to this matter

While driving at highway speeds, there was a loud pop and the display showed "reduce power mode". we had to improvise a stopping place despite being far from home. there was no warning or issues beforehand. this incident was risky because of the loss of power while on a high speed thoroughfare and limited stopping options. the vehicle required a jump to move onto tow truck to take to dealership, where it has remained for two weeks without an estimate for repair. the symptoms.seem consistent with iccu failure.

The iccu failed in the car. the car lost power while driving and showed an ev warning and the 12v battery warning.

In the 1.5 years since i bought the 2022 hyundai ioniq 5 (new vehicle) there have been three instances where the car has failed to turn on or off due to rapid discharge of the 12 v battery. in all three occasions, the main battery was fully charged; however, the 12v discharged rapidly. the first two times this happened it took about 20 to 30 minutes of waiting for the main battery to charge the 12v battery before the car would start; however, on the most recent occasion, i had to call a tow truck in order to get the car jump started. i am very concerned about the safety of myself and my young children as i regularly use this car to go to work and take my kids to school. the only warning sign was a yellow light on the dashboard of the car—the indication that the main battery is charging the 12 v battery (this was happening more frequently leading up to the 3 instances, which tells me that the 12v battery needed charge, but was being insufficiently charged by the main battery). because of the poor 12v battery, i avoid using functions that could deteriorate the 12v battery, such as air conditioning, and the gps system. hyundai recently sent a letter/safety notice about a faulty iccu and fuse, and i will be taking the car in soon to get this repaired, but the repeated discharges of the 12v battery in the last 1.5 years has deteriorated the 12v battery enough that hyundai should be proactively replacing it (not just the iccu and fuse).

The vehicle will not fully charge at home at night on a level 2 evse. it charges for a few minutes, than stops entirely. when i restart the process, the same issue remains. i cannot charge the car fully at level 2, 40amps. i wake up in the morning and only 5% of charge has been added.

We have owned an ionic 5 for a year. for 8 months the level 2 charging system worked fine. we have two 40 amp level 2 chargers at two different locations which both charge the car at between 9.0 and 9.2 kw, well below the ionic 5’s advertised capacity of 10.6 kw. after 8 months the charging session began to fail after only 1.5 hours due to the charge port overheating. initially this seemed to be related to the ambient temperature, but now the failure occurs even when the ambient temperature is below 70. once the session fails, the charging system keeps cycling between starting and failing, with each cycle lasting only a couple of minuets. therefore it is very difficult to charge the car to even an 80% capacity. i am also worried about the impact this constant cycling is having on the battery overheating as well as the life of the battery.

Vehicle suspension in the rear feels unsettled when coming to a stop using regenerative brakes. if you hit a small pothole or recessed manhole cover the rear of the vehicle feels like the rear suspension is jumping. i've taken it to the dealer and they noticed it and also it occurred on a new ioniq 5 they had on the lot also.

When home charging with my 50amp union installed charger ,the ionic5 hyundai overheats and shuts down charger ,.i purchased a new charger 50 amp. installed by union electrican , same results . i am very concerned that the auto will catch on fire in my garage. please have mfg ,correct this problem this problem occurs multi times never charges more than 20 minutes

The contact owns a 2022 hyundai ioniq 5. the contact stated while accelerating approximately 5 mph from a stop, the vehicle lost motive power. the contact stated the failure had occurred two days in a row, with the second failure resulting in the vehicle coming to a complete stop. the contact turned off and restarted the vehicle and the vehicle operated normally. the contact stated that he placed the vehicle into sport mode and the vehicle seemed to operate normally. the contact had not taken the vehicle to a local dealer or independent mechanic. the vehicle had not been diagnosed or repaired. the manufacturer was informed of the failure. the contact researched online and related the failure to nhtsa action number: pe23011 components (electrical system). the failure mileage was approximately 16,500.

After a recent update at my dealer my vehicle is no longer charging at advertised time. it now takes 2 to 3 days to reach full charge from 70 percent.

The vehicle lost traction power, failed to respond to presses to the accelerator and coasted to a stop. it gave no indication on the dash that there were any problems. putting the car in park and then selecting drive again restored traction power and the car responded to pressing of the accelerator pedal. the car was not turned off and back on. during the incident: - the brakes, steering, air conditioning, radio and other electrical equipment continued to operate normally. - the car was configured for "level 2" regen braking, but during the incident, when all pressure was removed from the accelerator pedal, the car did not "feel" like it slowed as normally did during level 2 regen when there is no application of the accelerator. - the car was configured for "eco" mode. the drive mode was switched to normal and sport during the incident but it had no effect. - the power/charge gauge on the dash neither indicated power when the accelerator was pressed nor indicated charge when coasting (as would be expected for level 2 regen) or when the brake pedal was pressed. car information: - the car had about 75% charge and reported about ~260 miles of range. - the manufacturers app has not reported any "dtc" codes. - the car has no open recalls at this time. - service campaign 997 was completed august 23rd at dealer. - service campaign 9a1 was completed august 23rd at dealer. additional information: - a previous event similar to the above described event happened on august 21st where the vehicle lost traction power but gave no indication that anything was wrong. - reported it to the dealer, but they were unable to find anything wrong or recreate the problem. - they applied the iccu software update.

We had charged the ionique 5 to 90% and driven for short trips. we parked it then went to do some errands about an hour later. the dashboard warned that the 12 v battery was almost completely discharged and that i should start the car by placing the key fob next to the start button. i did that but it didn't start. i pushed the off button and then tried again and it refused to start and the dashboard flashed somewhat erratically. the battery then went completely dead. we called the emergency roadside assistance and they came within 30 minutes but the person who arrived said he knew nothing about electric cars and so we asked him to leave. later we searched the internet and found others have had the 12 v batteries discharge. we also learned it could be charged with a portable charger. we called the dealer as it was now sunday. one of the salesforce managers reassured us that is was ok to use regular car chargers on the ionique 12 volt battery. our neighbor helped us do this and it then started working. we followed the internet (a blogger's) instructions to go to the utility site and put it in the mode that would make sure the 12 volt battery was drawing on the main powertrain to completely charge. we left the car on for 30 minutes and then it seemed to be working normally. we did some errands and it continued to work well. the safety risk is if this had happened on the highway and away from home. the car was recently taken in for the scheduled recall of ? something before this happened. there were no warnings or symptoms prior to this incident. there was several months ago an episode when i was driving that the power seemed to decrease and i was unable to accelerate and drove about 2 miles on mostly city streets at about 20 miles per hour. after i shut the car off and then my husband tried to start it the next day, it worked fine--that was the only other incident. i did not report that and it did not recur.

The contact owns a 2022 hyundai ioniq 5. the contact stated that the vehicle failed to start as needed. the contact stated that the battery had discharged. the contact had to jump-start the vehicle. there were no warning lights illuminated. the vehicle was taken to the local dealer but was not diagnosed or repaired. the manufacturer was not contacted. the failure mileage was approximately 29,000.

I charge my vehicle using a home 48 amp charger. after about 10 months of ownership. i began to receive “charging unsuccessful”notifications after about ten of charging at the maximum charging speed. i reduced the charging rate to reduced and was able to charge continuously to 90% a couple times at that rate. however, i began to receive “charging unsuccessful” notifications at this rate as well and had to lower the charging rate to minimum in order to charge continuously. i can not charge the vehicle at 48 amps and the vehicle can only charge at 5.7 kwh, rather than the expected 11.5 kwh. the vehicle has been repaired four times. i cannot take the car on long trips, or for intensive use, where i would need to quickly charge to car in order to continue using it. as this issue appears to be progressive, when will the car fail to charge at even the minimum rate? when i am on the road at a remote charging station? when i have an emergency and need to use it?

The car suddenly showed a warning on the screen asking me to park and in a few seconds went completely dead. it won't start at all. i can't even unlock the car. i had to call roadside assistance and have them tow the car to ideal hyundai dealership in frederick, md. it's been 4 days and the dealership can't diagnose the problem or won't communicate what the issue is.

The 12 volt battery keeps failing. every time i contact hyundai autonation it takes forever for them to do anything about it and they don't seem to understand

Every so often when i am driving on the highway, the car just looses power and i may catch a message that flashes on my display, "emergency braking". the event last no longer than about a second. when this phantom braking happens, so far, it has not been so severe to feel dangerous just unsettling!

In stop and go traffic on freeway, car was moving at about 5 miles an hour but car kept moving, collision warning and automatic braking did not activate. had to turn off car and coast to a stop. nearly collided with vehicle in front

My 12v battery died on 11/12 while my main battery still had 52% charge remaining. had to jump the battery to get the electrical system to work. since then several of the cars electrical systems are not working. this is a known issue online that hyundai has responded to but the dealer is saying that they are not aware.

Car died in a wegmans parking lot and dealer is telling me it will take 8-10 days to diagnose the problem which is known very well to the manufacturer and dealers. the iccu has failed.

The car started reporting error messages including "stop vehicle and check power supply". it briefly went into limp mode before dying completely. flat bed to dealer who can't begin diagnosis for at least a week. this sounds identical to the iccu issue that many owners are experiencing.

The car gave an warnings of “check electric vehicle system@ and started slowing down in the middleman of the road. i could have been easily rear ended or got into a serious injury. after googling, it seems almost all if not most of ioniq 5 are having this issue after certain mileage

The vehicle show an error message relating to the electrical system, refused to go over 24 mph for a short time, then went completely dark with no control and wheel locked. dealer says iccu + fuse is at fault, but there is no date for a new part. vehicle is undriveable until new part comes in.

The contact owns a 2022 hyundai ioniq 5. the contact stated while driving in rain or snow the rear windshield failed to be cleaned. the contact stated that the failure was a dangerous while driving at night while the headlights from vehicles behind caused the rear windshield to become opaque. the contact questioned a dealer and was informed that the vehicle was designed that way and that the windshield needed to be cleaned manually. additionally, the contact stated that the vehicle lost electrical power while driving at approximately 60 mph with the cruise control activated. the contact stated that the vehicle lost motive power with several unknown warning lights illuminated. the contact pulled over, stopped, restarted the vehicle, and the vehicle functioned as needed. the contact stated that the failure recurred once. the manufacturer was informed of the failure. the failure mileage was approximately 22,000.

Feared iccu leaving us stranded after reading so many reported failures, took car to dealership where they inspected and did some ineffective software update, few weeks later experience ev warning light and sudden loss of power, car wont go more than 25 so we parked and were effectively stranded. dealer suspects iccu....great. exactly what we wasted time trying to prevent. a known predicatable problem is called a defect!!!!!!

Known level 2 charging issue with hyundai ioniq 5 vehicles. overheating issue with charging system, previously the issue shut down charging with a temperature exceeded ~212 fahrenheit. tsb issued that "throttles" down charging rate, irrespective of the brand of level 2 charger doubling the time to charge the vehicle. not as advertised and significantly reducing the utility of the vehicle.

The vehicle was being driven normally on city street and i heard a thump in the rear end of the vehicle. very soon after, got a message on screen to check electrical charging system with the indicator lights for 12 volt battery and ev system illuminating. parked the vehicle a kilometer after thump to deliver something to a friend (the car sat for 10 minutes). resumed driving and then within a kilometer received a message that drive power would be limited -- significant decline in drive power... put my flashers on but did not stop because on busy street with no parking ... within two blocks, message of "stop vehicle and check power supply" appeared with full drive power ending within one block -- within that block, i was able to turn down a side street and coast down a hill to a parking lot. attempting to turn vehicle off, the screen showed erratic behavior and headlights went on and off. finally, was able to get everything off but was not able to lock the vehicle. if this drastic loss of power had occurred on a highway, there is a likelihood that such a power failure would have led to an accident.

My car suffered an iccu and high-voltage fuse failure despite having been previously inspected as part of service campaign 997, which found no reason to replace the parts. after 24,700 miles and 16 months of service, the parts failed. this was only 4 months after the service campaign was completed. similar to others who have reported iccu failures, i suffered a rapid loss of power on the road, and within minutes, a complete loss of motive power. i received a “check ev system” and “reduced power” warning, followed very quickly by “check power supply, pull over immediately.” while i was able to pull to the roadside, this easily may not have been the case, causing significant danger. the dealer confirmed the issue and eventually replaced the parts. a loss of motive power within minutes or seconds is potentially life-threatening. hyundai’s proposed fix for the issue — inspection and perhaps software update — is clearly inadequate to address the problem, since my vehicle failed after the service campaign had already been performed.

The contact owns a 2022 hyundai ioniq 5. the contact stated that the pedestrian warning system was inoperable while reversing. additionally, the contact stated that the battery was 92 percent charged; however, while driving 30-40 mph, the message "electric power failure" was displayed. the contact turned off the heater and the radio and continued driving. the contact stated that while parking the vehicle, the message "electric power failure - stop immediately" was displayed and several alarms sounded. the contact notified the dealer and was informed to drive the vehicle to the residence and the vehicle would be picked up. the contact stated that while driving to the residence, the failure recurred, and the vehicle failed to respond upon depressing the accelerator pedal while driving uphill. the contact became aware that the vehicle had lost electrical power. the contact was able to veer to the side of the road. the vehicle was towed to the dealer, where it was diagnosed that the integrated charging control unit (iccu) needed to be replaced. the vehicle was not repaired. the manufacturer was notified of the failure. the failure mileage was approximately 9,600.

Iccu failed and fuse failed, causing car to go into turtle mode, barely made it hope to have it towed to dealer

On dec. 29, 2023, while drively slowly in a parking lot, we heard a loud "pop" from the rear of our 2022 hyundai ioniq 5 (approx. mileage 15,800). then an amber colored dash warning came up saying "check electrical system." very soon thereafter, there was an audible warning alarm and a flashing red dashboard warning "stop vehicle and inspect charging system" along with a red battery outline symbol. almost immediately our top speed was reduced to around 20mph or so. we stopped in a safe place and had the vehicle towed to the closed hyundai dealer (zimbrick hyundai west, madison, wi). the dealer subsequently confirmed a failure of the integrated charging control unit (iccu). the iccu is expected to be replaced by fri. jan. 12.

The cruise will shut off randomly saying the radar is blocked. when it does this the car decelerates very fast. which is very dangerous in traffic. i’ve almost been rear ended a few times. it has also just started decelerating very fast when in cruise on highway for no apparent reason with no one in front of me.

Vehicle had the service campaign 997: integrated charging control unit (iccu) software update in october 2023 at around 4,000 miles. it's now january 2024, 7,300 miles and the vehicle is currently at the dealership. the dealership confirmed it needs iccu and fuse replacement. waiting for update on timeframe for iccu part to become available. the car was showing "check electric vehicle system" on the dashboard. it would not charge with level 2 home charger. when i took the car to the dealership it started displaying a "stop vehicle and check power supply" warning as i was arriving and the vehicle would not drive more than 25 mph.

The contact owns a 2022 hyundai ioniq 5. the contact stated that while driving at 50–60 mph, the forward collision avoidance and lane assist warning lights were illuminated. the vehicle was taken to the local dealer, where the instrument cluster went blank. the dealer was unable to determine the cause of the failure. the manufacturer was contacted and opened a case. the manufacturer sent a technician to diagnose the vehicle. the technician stated that the vcu, battery, iccu, and high-voltage battery needed to be replaced. the vehicle was repaired, but the failure recurred. the vehicle was taken back to the local dealer, but the vehicle was not diagnosed or repaired. the failure mileage was 19,000.

I started the car, and saw a "check electric vehicle system" alert on the dashboard, and began driving. i was not far from my home, when i saw several messages saying "stop vehicle and check power supply" - and the car began slowing and becoming unresponsive while i was in traffic. with my wife and infant son in the car, and being less than i mile from my home i was able to proceed cautiously and make it there. this is likely a known flaw in the integrated charge control unit of this model, which was subject to a voluntary service bulletin put out by hyundai. i took care of the recommended service and firmware update in september 2023, but it did not prevent this electrical system failure - the service bulletin should have advised replacement instead of putting my family in danger without any warning.

Vehicle receives an error regarding the battery and unexpectedly shuts down.

It is unknown what component or system failed there was a sudden and total electrical failure with the inability to safely move the car. if this electrical failure had occurred on a turnpike or expressway it would have been a catastrophic event. car was flat bedded to a dealership dashboard warning provided less than 5 min time and 0.5 mile before ceasing to operate at all although car's computer thought that the car's health was ok.

The contact owns a 2022 hyundai ioniq5. the contact stated that the vehicle was unable to charge at the charging station due the vehicle not accepting the charge. there was a message stating that "charging unsuccessful", however, recently the message only read unit connected to charger. no warning light was illuminated. the vehicle was taken to the dealer and diagnosed with a failure within the internal charging unit. the manufacturer was not made aware of the failure. the approximate failure mileage was 21,000.

Aloha, our hyundai ioniq5 has been out of commission for almost 5 months due to a failure associated with the iccu recall. in december after months of working with hyundai they finally shipped the car to an ev certified dealer to complete the recall and fix the iccu issue. when we got the vehicle home it still shows electrical warning lights and will not charge at home. the recall fix didn't work and it still has the iccu issue. the iccu apparently can cause greater safety issues with the ev system when on the road. its important the the recall fix actually works and in our case it did not. we have now been without the car for 5 months. we've had 5 different claim managers from hyundai usa and we are still waiting on a fix. we are only filing a complaint because this could be a known reoccurring issue for other early ioniq5 owners.

A warning popped up "check electric vehicle system", then a few minutes later an error popup appeared "stop vehicle and check power supply" and the car would no longer go above 27 mph.

I was driving on the freeway on jan 17 when i heard a pop and then the electrical warning system on the car lit up. i lost power to the car and was only able to accelerate minimally. i turned on my hazard lights and was able to get to the shoulder of the freeway and fortunately was close to an exit and was able to exit the freeway. it was towed to a dealership and i was told there was a problem with the iccu.

Driving down i95 at 75mph. heard loud "thunk" and car lost both power and brakes. warning lights on the dashboard said to check brake system. i was unable to pull onto the shoulder due to construction barricades in place. the car slowed to 10mph and continued until i was able to pull over onto the shoulder. this was very dangerous given the highway traffic speeds, construction zone with limited emergency pull over space, and due to it being night time. turning it off and on again restored power but it happened 4 more times before i was able to make it to an exit. this seems to be a common issue with this model. i have already performed the iccu recall that was supposed to address this

Even though i had this recall for iccu handled several months ago it didn't correct a problem, and on 02/07/2024 while driving 50 mph, a sudden pop occurred and the vehicle lost power and acceleration. i was able to pull over and shortly after 15 min, the vehicle died completely. after towing to the dealer, a few weeks later they told me that it was iccu again and that the part needed to be changed. at this time they have no eta for when the part will come!

On 2/24/2024 i was driving my hyundai ioniq 5 and heard a pop from the backseat area. immediately i lost power and was unable to move the car out of the lane of travel or put on my hazard lights. prior to the pop sound there were no issues that would indicate something was wrong. the dealership confirmed my suspension that the iccu failed. my car had the software update for the iccu months prior to this incident. the dealer repaired the car under warranty so no one besides the dealer has seen the failed part.

I have a hyundai ioniq 5. i purchased it in july 2022 and have been driving it with no major issues except for a couple recall updates. on monday, [xxx] i was driving home on the highway when a warning light came on telling me to check ev connection, it was an orange message. then the light and message switched to red and displayed a battery symbol. the message said to stop vehicle and check power supply. my acceleration slowed down and i couldn't go above 25 mph despite attempts to speed up. there were many cars on the road when this happened, and i automatically turned on my emergency blinkers. there was a large 16-wheeler behind me that noted something was wrong and slowed down with his emergency lights blinking as well to support me. i panicked and found the nearest exit to come off the highway and before i could make it to the traffic light, the car shut off unexpectedly and completely stopped with no warning. attempts to restart the vehicle did not yield positive results. after 2 hours of waiting for a tow truck in the middle of the road blocking traffic and waving people around my car, i was able to tow my vehicle to a dealership in nj close by my house. as it was evening time, i left it at the dealership service center and dropped keys in drop box. i spent several days on the phone with hyundai service center arguing to get my car checked as they told me that appointments were all booked, despite this being an emergency. i had no idea what was happening, but it was clearly inoperable, and i made that very clear. finally, today, thursday, [xxx] they confirmed that diagnostic testing showed iccu failure. they advised that the part is on back-order, and they issued me a loaner for the time being. i have no idea how long this will take to fix. luckily, i didn't have an accident, although very well could have with how quickly the issue escalated. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

My 2022 ioniq 5 rwd died in my driveway in late february after first showing a "check electric vehicle system" warning and limiting the vehicle's speed to 22mph while returning home from a short errand. i was initially able to at least turn the vehicle on, but the vehicle was completely non-responsive within two hours of returning home. if we had been traveling on the highway and/or far from home, we would have been in potential danger due to the low maximum speed and could have been stranded with a non-functioning vehicle due to the complete loss of power shortly after the initial incident. i ended up needing to have the vehicle towed to a dealership roughly 25 miles from my home. i was able to obtain a dtc before the vehicle died: (p1a90(96) [0x1a9096] status: test failed, test failed (current drive cycle), pending, confirmed, test failed since last dtc clear, warning indicator requested). since other ioniq 5 owners have reported a similar problem, i suspected the problem to be a failed iccu, and the dealership that is repairing the vehicle subsequently confirmed iccu failure to be the problem. for reference, i had the iccu software update installed in november of 2023.

Highway speed vibration of entire vehicle, particularly steering wheel and seats. this continues despite wheel balance, forced wheel balance and replacing all 4 tires. multiple trips to dealer without improvement. test drive of a new, same model vehicle with same or more road vibration at high speed. numerous same complaints on internet forums.

Started car. received low power warning and a turtle. car did not drive faster than 12 miles per hour. car instructed me to stop vehicle. unable to restart to drive to dealership.

My vehicle was fully charged. about 1 mile after leaving my house, i received a warning message on my display (vehicle electrical system error or similar). shortly after i received another message that power was reduced, then finally, "stop driving". i pulled into the nearest driveway and called roadside assistance. at that point, the vehicle was completely dead. no lights or power whatsoever. i could not activate the car to shift into neutral. i had my vehicle towed to the dealership. they said it was due to a faulty iccu and fuse. after about a week they were able to replace the iccu, fuse and update the software.

Battery fails to recharge (12v battery). no open doors, no accessories on (12v system automatically stops when car is off and door opens) previous recalls completed. pictures fail to upload, basically just says "12v is low, stop safely"

The iccu broke and the associated fuse blew. the car would only go about 25 mph. it told me to stop driving. the car was taken to the dealer for iccu and fuse replacement. it said check electric vehicle system, then stop vehicle and check power supply.

Iccu stopped charging my auxiliary battery (hyundai ioniq 5). i couldn’t figure out why, but i began carrying a portable charger with me which instantly got my car going again. one day during a particularly nasty snow storm, my battery was dead again and i jump started my car. i drove it about 40 feet before i realized it needed snow socks. i stepped out of my car and got back in and a whole myriad of warnings were going on. i got a code for the vent flaps (snow had got stuck in there…that was an easy fix. also my auto hold light, check abs light, and smart cruise control warning indicator lights were all on and are still two months later still not working. the car otherwise operates well enough to drive as i replaced the auxiliary battery. since replacing the battery, the car operates as well as the iccu (it charges the new battery) but the previous issues remain.

I was charging my car at home like i usually do and around 2am i received an alert on my bluelink app that a charging alarm was detected. i saw that the breaker for my charger had tripped which it had never done before. i reset the breaker and tried to restart charging but was not successful. i turned on the car and immediately got the battery and ev warning lights telling me to stop the vehicle. i was charging my car at home like i usually do and around 2am i received an alert on my bluelink app that a charging alarm was detected. i saw that the breaker for my charger had tripped which it had never done before. i reset the breaker and tried to restart charging but was not successful. i turned on the car and immediately got the battery and ev warning lights telling me to stop the vehicle. i had the vehicle towed to my local dealer and they determined it was the iccu issue that has affected many ioniq 5s. i had the software update done that was part of campaign [xxx] but it obviously didn’t work. it took a week to get a new iccu fuse in and they also updated the software again in accordance with recall [xxx]. i am leery about another software fix solving this problem for good. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

I was driving 75mph on the freeway and i heard a pop and then the electrical warning system on the car lit up. i lost power to the car and was only able to accelerate minimally. there was a warning of low battery and the vehicle was going to lose power. i turned on my hazard lights and was able to get to the exit and was able to exit the freeway safely. once the vehicle lost power i was unable to open the charger door, start the vehicle, use any of the key fob functions and had to jump the 12v battery, only to die immediately after. there is no pre-warning to this happening, it just shows the alert and the car loses all power. there are also problems with the vehicle after being plugged in to charge and it says "charging unsuccessful", or stops charging after a short period of time. it also will not charge to full capacity at home or the charging station. i receive no warning lights or messages about why the charge is not working. it took weeks to get the vehicle into the dealer, making it extremely unsafe to drive and the error has almost caused a major crash. my vehicle has been at the dealer and has not been diagnosed with any issues yet. the dealer has provided me with a rental vehicle...in which now i'm paying for gas. reading through these other comments...who knows how long it will be to get my vehicle back, yet i'm still making my payments...this isn't

On march 29, 2024 i parked my ioniq 5 with the ev battery at ~65%. 3 hours later i received an alert that there was something wrong with the battery. investigating the car, the auxiliary functions of the car would turn on. however, the dashboard reported the ev battery was at 0%. the power train of the car would not turn on and it would not drive. a tow truck was needed to take it to a local dealership.

While driving, the 'check ev system' light comes on, intermittently what will happen is that when stopped the car will put itself in park, when it is in park i can not get it out of park, thus unable to move forward, it has also happened while reversing (and not stopped). i need to cycle the car on and off a bunch of times in order for it to finally turn back on. this is very dangerous while on the road stopped in a busy intersection and has potential for a crash. i have brought it to a dealer 4 times and they do not know what is wrong and cannot fix it. [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

The contact owns a 2022 hyundai ioniq 5. the contact received notification of nhtsa campaign number: 24v204000 (electrical system) however, the part to do the recall repair was not yet available. the contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. the contact stated that while attempting to start the vehicle, the vehicle failed to start. the contact stated that the battery was completely drained, and the vehicle needed to be jumpstarted. the contact stated that the failure occurred intermittently however, the failure had become persistent. additionally, the battery warning light was illuminated. due to the failure, the contact purchased several jumper cables. the vehicle was scheduled for a service appointment within several weeks. the dealer was made aware of the failure but confirmed that parts were not yet available. the vehicle was not repaired. the manufacturer was made aware of the failure and a case was filed. the failure mileage was approximately 17,500. parts distribution disconnect.

Vehicle was having issues charging large battery. would shut off immediately. today 12v battery died, probably related to iccu recall performed earlier this month.

The contact owns a 2022 hyundai ioniq 5. the contact stated that the vehicle failed to start and was jumpstarted. the dealer was notified of the failure and advised the contact to charge the 12 volt battery. the contact stated that the 12 volt battery was recharged; however, the failure recurred while driving 40 mph a week later. a message advising to pull over immediately was displayed, and the vehicle lost motive power. the contact was able to veer to the side of the road. towing services assisted the contact in recharging the 12 volt battery, and the contact was able to drive to the residence. the contact stated that the failure persisted. the vehicle was taken to the dealer, where the contact was informed that the earliest availability for diagnostic testing and the recall repair of nhtsa campaign number: 24v204000 (electrical system) was in 8 days. the vehicle was not diagnosed or repaired. the manufacturer was not notified of the failure. the failure mileage was approximately 26,008.

When the passenger front seat is occupied, the airbag disengaged warning light is illuminated; i have taken it to hyundai service twice and they find no malfunction, yet the light remains illuminated

Iccu failure. known issue, occurred even after applying recall 257 to the vehicle.

In apr 2024 we had an issue with charging the vehicle at level 1 and level 2 took to dealer and they replaced the iccu unit. a week later the car was doa no lights nothing so we had to jump start it. we took to dealer they did an update , week later doa again. took to dealer and found out the msu part needs to be replaced back ordered for a month and still at dealer was given a loaner, sound familar cause its occuring over and over. waiting on repair no eta.

The contact owns a 2022 hyundai ionic 5. the contact stated that while driving at approximately 55 mph, there was a loud popping sound coming from the rear of the vehicle, and the vehicle decelerated to 15 mph before the vehicle stalled. during the failure, the 12-volt battery not detected message was displayed. the vehicle was later towed to the local dealer; however, the cause of the failure was not yet determined. the manufacturer was not contacted. the failure mileage was 25,000.

Forward safety system error message on dashboard. dealer found dtc codes below adas_drv adas driving ecu c28b186 can signal error fr_rdr fr_radar front radar c162078 alignment failed dealer states alignment failing not covered under warranty even though no damage visible on vehicle. unable to afford repairs if not covered under warranty. radar is clearly faulty as there is no damage to vehicle.

This has happened twice so far. i was driving down the street on the main road and the check evs error came on with a yellow triangle ️ light came on. suddenly the car slowed down, it was hard to steer but i was able to get it to a neighborhood near the school before it shut down. it scare me to know what would have happened if that was on a freeway. now, because of the fear i hardly drive the car. the last time this happened was yesterday.

When you place the car in park a recall was done so that the emergency parking brake automatically engages. well between 30 seconds to a minute after the car is in park, the brake disengage. when you go to set it manually after it disengage, it will still disengage.

When charging the car on level 2 charger at 40 amps, the connector where the charger plugs in overheats. based on updated software the car reacts by turning off the charging, but i am concerned it may not always do that and the connector would overheat and fail. also the car is not fully charged as it should be. this occurs perhaps 1 out of 2 or 3 charging sessions. hyundai is aware of this but has chosen not to address the issue beyond shutting off charging, which is not an acceptable response. the local dealer appears to be unaware of the problem. they indicated i would have to pay for them to inspect it and only be reimbursed if the issue is under warranty

What component or system failed or malfunctioned, and is it available for inspection upon request? the iccu failed. the car won't charge on a level 1, 2, or 3 charger. the failure happened in the middle of a charging session. since failing when trying to charge the car says "charging unsuccessful". the dealer has had the car for 28 days and won't tell me when it will be fixed. how was your safety or the safety of others put at risk? yes. my family. thankfully the failure happened in our garage. if it had of happened when we were away from home we would have been left stranded unable to charge. also, if the iccu fails while driving the car loses all power and comes to a stop. has the problem been reproduced or confirmed by a dealer or independent service center? yes. it has been at the dealer for 28 days has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? it has been inspected by the dealer were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? no, there were no warnings prior. all iccu related recalls had been performed.

The integrated charging control unit failed. my vehicle would not accept a level one or level two charge. you would have to remove the rear seats to inspect. no one’s safety was put at risk. the problem has been confirmed by a dealer. the vehicle has not been inspected by the manufacturer, police, insurance representatives or others. there were no warning lamps, messages or other symptoms of the problem prior to the failure. no warning lamps appeared at all.

A warning to check electrical system was displayed. the battery did not have sufficient charge to drive it to a dealer so i tried to charge and the car would not charge past 60%. i was able to drive the car to the dealer where they diagnosed a failed ev battery. prior to the failure the car would use battery percentage much faster than it should have. for example, a fifteen mile drive would deplete the battery 25 miles. the dealer still has the car waiting to replace the battery.

Car has suddenly lost power three times while driving at low speeds or while stopped (eg at a stop light). i have turned off the power (ev start button) and then turned it back on, and the car restarts and starts moving again. the sudden loss of power seems dangerous-- i am concerned that if someone is following close behind me, they will be unable to brake and i will be rear-ended. please note that i purchased this vehicle used and the problem started occurring the 2nd day i drove the car. (the car was bought back by a dealer in fl under the state lemon law and was subsequently purchased by a dealer in nj, from whom i purchased the car.) i suspect the same problem was occurring when the vehicle was bought back by the fl dealer, and it was not properly fixed.

Abs or all wheel drive did not seem to work while driving on a highway, and i tried to stop as there was another vehicle on the road which was spinning out of control. if abs was activated, the car would have stopped, and similarly if all wheel drive was working, car would not have spun out of control.

Respective headlight turns off when using turn signal stalk. this, imo represents additional risk factors: loss of visibility in the area of where the turn will be traveling in order to keep the lighting on, the turn signal needs to be off. thereby not being able to give following traffic warning of my intention to turn. also, loss of ability to have manufacturers install headlight with ability to move in the the direction of the turn. thank you.

On saturday, [xxx], at approximately [xxx], i drove my 2022 hyundai ioniq 5 north on [xxx] . the car was operating normally. i stopped at the red light at the corner of [xxx] and noticed a large red circle with a "check electrical system" warning on the driver's display screen. when the traffic light turned green, i pressed the accelerator pedal, and the car did not move. i looked at the "park, neutral, reverse, drive" shifter. the "p" was lit up, indicating the car was in "park." i attempted to switch to "drive," and the status indicator remained in "p." i then pushed the "ev start stop" switch to see if i could cycle the vehicle off and then back on to clear the problem. the switch had no effect. [xxx] is a busy four-lane, undivided street near the university of colorado at boulder campus. i selected the hazard flashers and called 911 to alert the boulder police department that i was in a car that was immobilized in the middle of the right-hand northbound lane. cars had to swerve to avoid me. the police department dispatched a vehicle that arrived 10 minutes later, pulled up behind me, and put its flashing lights on to alert traffic. while waiting for the tow truck, i received another alert on the driver's display that informed me that the 12-volt battery was nearly completely discharged, and i had 10 minutes of power left. the warning counted the remaining minutes to 0, and the displays shut down. from the first warning message to the shutdown, i could not turn the car system off or shift the car out of the park. the tow company had to put dollies under the rear wheels of the ioniq 5 and lift the front end off the ground to tow the vehicle, as all four wheels were locked. the car was towed to crossroads hyundai in loveland, colorado. it had just been serviced to address all the recall issues, including the iccu software update. the car has approximately 16,000 miles on it. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

After all the recalls and tbs that hyundai has performed on this car to prevent any iccu failures i still had the failure after all the updates. last week after ac charging to 80% (7.6kw) the car thru an error code to check ev when starting up. it was only yellow so i attempted to drive it. within 1/4 block the error code was flashing red and a warning was given to pull over and stop. since i was only a block away i made it back home. the car had to be towed to the local dealer. upon inspection they retrieved error code p1a9096 that said the iccu failed. the iccu fuse was also blown (open). this did not cause a safety issue this time but if i would have been on the road who knows. also the replacement iccu appears to be the same part number as removed? i do not believe hyundai fully understands the issue and software updates have only corrected or is masking some larger issue.

Car on 2 separate occasions once parked the other while in motion discharged unexpectedly and would not start. i was later notified by a contracted service station that the 12v battery is discharging and needs to be replaced or serviced by dealer. these events only started happening after a recent recall update was done to the vehicle for battery management. warning signs on the vehicle said 12v voltage low stop safely.

While we were driving the ioniq recently when it suddenly lost all power. we had a very brief warning on the dash that it was losing its power; we barely had enough time to pull onto a side street. it lost power so quickly we couldn't position the car properly and it stayed in the middle of the side street until the tow truck came and jumped the 12 volt battery enough to get the car into gear so it could drive up the tow truck ramp. the scary part was that we were only a block away from turning onto busy highway 522 when it died. had the car died on the highway we could have been stranded in a very unsafe position. the dealer later diagnosed the problem as a failed iccu and 12-volt battery and replaced both. we had to rent a car for 3 days.

At around 9pm, while charging my vehicle, i heard a loud boom and the power went out. it appears there was some sort of malfunction with the charger that has tripped/blown the circuit. i have not had an electrician come out yet, but after a quick google search it became apparent that others have experienced the same issue and i thought it was important to report. my charger is outside, not in a garage or enclosed space, so there was no fire that i am aware of.

Today when i was driving down a canyon going 40 mph, the car started coasting and the accelerator was unresponsive. i couldn't keep the car from decreasing speed and regen braking wasn't working either. i don't know whether it's related, but this happened within seconds of me turning off daylight savings time in the menu. i coasted to a safe place to pull over (the brakes worked fine), but i could not get the accelerator to work after switching from drive to park to drive again. after turning the car off and then back on, the accelerator again worked like normal. after continuing driving, i turned daylight savings time on and off a few times, but nothing adverse happened.

Hyundai of fort myers repair order number [xxxx] dear nhtsa team, i am reaching out to formally report a significant safety concern involving our hyundai ioniq 5, which recently experienced an integrated charging control unit (iccu) failure. this malfunction occurred despite our vehicle receiving all relevant software and hardware updates that hyundai implemented to address this known issue. this experience has caused our family considerable distress and has raised serious doubts about the reliability of this model, as well as the adequacy of hyundai’s current safety measures to prevent iccu failure. while my wife and young daughter were in the car, the iccu failure occurred suddenly, producing a loud pop that alarmed us all, particularly my daughter who was seated in the rear. she has since expressed fear about riding in the ioniq 5, making it clear that this issue has impacted her sense of security in the car. despite the updates hyundai has issued, the failure occurred without warning, putting us in a vulnerable situation and highlighting that the current remedies may be insufficient to prevent this risk. the gravity of this problem is amplified by my wife’s critical health needs. she is currently on the waiting list for a kidney transplant, and our family requires a dependable vehicle to ensure she can be transported quickly and safely to her medical appointments and, when the time comes, to the hospital for her transplant. we cannot rely on the ioniq 5 for these crucial needs given our recent experience with this unexpected breakdown. i am requesting that the nhtsa investigate this issue, as our experience suggests that hyundai’s current measures to address iccu failure may not adequately safeguard ioniq 5 owners. a comprehensive review of this problem could be critical in ensuring the safety of other drivers and families who may be unknowingly exposed to the risk of sudden vehicle malfunctions. we hope that the nhtsa will consider further action

On [xxx], i was driving my 2022 hyundai ioniq 5 sel when all of a sudden the car started beeping and displaying a 12v battery voltage low. stop safely message. i was traveling on [xxx] in the las vegas area and the car all of a sudden came shut off seconds later. this presented a very dangerous situation with other vehicles traveling at 65+ mph and the vehicle shutting off. i was able to use a portable power jump starting pack to at least get the car restarted and pulled off the side of the highway. even after jump starting the vehicle, it would only stay running for a minute before shutting off again. the is the second time in 2 months that my car has lost power. the dealer, abc hyundai in las vegas did a iccu recall and said that would solve the problems. the problem has not been resolved and i do not feel this is a safe vehicle to drive. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

Received an error message upon starting car that said "stop vehicle and check power supply". had car towed to dealership.

Hyundai issued tsb 22-01-094h for my vehicle which is an update to the battery management system,, but after 4 attempts hyundai dealerships have still not been able to complete the tsb. hyundai corporate has also not helped after multiple cases. after many hours of research, i have determined that my vehicle's bms software was updated to an intermittent version (version 700x) that does not support this tsb via automatic update, and the correct bms rom (version 540x) must be selected manually, which the dealerships are unwilling or unable to do.

Hyundai has absolutely dropped the ball on this ioniq 5's iccu and 12v battery issue. after numerous recalls to fix a hardware problem through a series of software fixes that don't work and refusal to give a loaner for loss of use, i would like to pursue a buyback option for this vehicle. on tuesday, [xxx], i went to napleton valley hyundai in aurora, il to complete recall campaign #272 nhtsa recall # 24v868000. after the recall, my 12v battery went dead on wednesday, [xxx] and had to be towed to dealership. their only solution was yet another software update and then charge the 12v and said it was ready for pickup on thursday, december 5. i told them then to also do a wheel alignment and they said during that process, the 12v battery went down again. they then charged it back up and gave it back to me and said it was good. i encouraged them to pursue a better solution but they had no interest. so, it was picked up on friday, [xxx]. on saturday [xxx], the 12v battery went dead again and will have to be towed back to the dealership. over the phone, my service advisor said it would have to be charged and released. if this issue then happens again, then a replacement might be considered. calls to hyundai north america headquarters have not yielded any results and they claim they need 3 business days to assign my case while i have no working car. information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6)

Drove less than one mile and the car suddenly dropped from 45 mph to 20 and would not accelerate (i was almost rear ended by a bus). i was able to pull off the road and the battery died.

Open iccu fuse, car would not charge

Unknowingly my cars iccu failed. i went to charge my car on december 23. the evse then immediately tripped the breaker. the evse gave an error code of a stuck relay fault and made the evse unusable. this happened to 2 different juicebox chargers and both are not permanently disabled and need to be replaced.

12 v battery died after being plugged in to charge overnight. the 12v battery was replaced in may 2024 due to a similar issue. it seems that the iccu recalls and software updates have not been fixing the problem.

Driving on the highway the car entered limp mode allowing only 30 mph. messages "stop vehicle and check power supply" with 12v battery indicator. classic iccu failure.

Passenger side rear seat (40% side) is missing all mounting bolts required to secure seat to vehicle. i purchased the vehicle as a preowned unit and noticed squeaking and a rattle coming from the rear seats. upon inspection, i discovered that the seat is only resting on the floor and with little effort the seat can be dislodged.

The iccu on my ioniq 5 failed without any warning from the car or mobile app. all recalls were performed on the vehicle prior to it failing. i was unable to charge the vehicle on level 1 or level 2 charging. the dealership replaced both the iccu and fuse on the vehicle.

The vehicle has no power whatsoever. upon approaching the vehicle, it did not unlock. i used the physical key to open the drivers door. i then tried starting the vehicle only to have the gauge and center display flashing on and off with a red warning that the 12v was dead, to pull over and top immediately then the displays turned off. there are no lights or power to the vehicle no whatsoever. it cannot turn on any of the interior lights or even power door locks. this means only the front doors can be opened or locked and the vehicle will obviously not move. the 12v battery system has been a continuing issue with the vehicle. it has been repaired and the subject of several recalls during my short ownership and is still a problem. due to a blizzard, i have been unable to have the vehicle taken to the dealership and have been without transportation for 3 days already with no clear resolution from hyundai.

On december 22, 2024, i went out at 8 am to have breakfast with my dad. on the way back, i noticed my car starting to slow down, and the "turtle mode" activated. normally, this mode only occurs when the battery level is under 1%, but my battery was at 75%. as i tried to park in a safe location, the car suddenly lost power and displayed a warning instructing me to stop due to an electrical problem and to contact service. i was able to safely stop at a small shopping center plaza and called hyundai's towing service. when the towing company arrived, they found they couldn’t turn the car on and had to use a wheel-lift tow method. unfortunately, i had to wait nine hours for the car to be towed. the car was dropped off at the dealership on december 22, 2024, but it wasn’t checked until december 31. by the end of the first week or early in the second week of january, i was informed that the replacement iccu (integrated charging control unit) had arrived. however, due to the dealership's schedule, they said they wouldn’t begin the installation until the following tuesday, with hopes of completing the work by the end of that week. this incident was especially frustrating because i had already experienced an iccu failure in january 2023, just nine months after purchasing the vehicle. at that time, no one could explain why the iccu component had failed, and now i’m facing the same issue again.

Electrical system failure. available for inspection upon request. while driving, warning appeared on dashboard. warning said, "stop vehicle and check power supply" the safety of vehicle occupants and others on the road was put at risk. i lost control of the vehicle in the middle of traffic due to the loss of electrical power. the problem has been confirmed by san leandro hyundai as part of the safety recall for the integrated charging control unit, recall number 272. nhtsa recall number 24v-868. the recall repair was completed but the iccu was not replaced and is still defective. a few minutes prior to the eletrical failure a warning message appeared on the dashboard. the warning message said, "stop vehicle and check power supply". first appeared on saturday january 11th at 4pm (pt).

I had the most recent recall (code 702 i believe) done on january 13th. i believe the recall was an nhtsa required recall and after the software update that was part of the recall my car will no longer charge. it has been with the dealer since january 15th with no resolution in sight. the software update was i believe the 4th such update intended to prevent a part called an iccu from failing. it took 4 business days but the dealer hyundai of roseville confirmed the iccu needs to be replaced and they don’t have an eta on when the part will be shipped. online i have seen reports of the same thing happening to others and the iccu repair process taking 1-2 months.

I took my hyundai in twice to a local dealership for the recall to be fixed. they failed both times to remedy the situation, and said they would handle it again at my next scheduled service appointment. a few weeks later my car suffered from the iccu failure and i was stuck without a working vehicle. i had my car towed to the dealership 20 days ago but they have no eta on the part needed to fix the recall.

Turning into my driveway one evening, the car displayed the "check electric vehicle system" alert on dash. the following morning while backing out of the driveway to wait for a tow, the alert changed to "stop vehicle and check power supply". got car towed to dealer, and after diagnosing, confirmed that iccu failed. car has been at the dealer for almost 2 weeks at this point, and the part is still back-ordered with no eta, according to the service advisor i have been working with.

Less than 48 hours after getting the latest integrated charging control unit (iccu) recall performed (hyundai recall number 272, nhtsa recall number 24v-868), the iccu on my car failed. this resulted in the 12v battery no longer being charged by the ev's main battery, and the car entering "limp-home mode", limiting the car's speed to 20mph. error messages include "check electric vehicle system" and "stop vehicle and check power supply". these messages appeared when the iccu failed, not before. iccu failures are well known with this car, hence the recall. however, there is anecdotal evidence in the ioniq 5 facebook forums that indicate that the iccu failure rate increases on cars that have had the recall performed. hyundai and the nhtsa need to examine the failure data to see if there is a cause-and-effect relationship between recall repair and increased failure rate, or if the failures observed by the community are just coincidental.

1) this is the second occurrence of this issue within the past 12 months. while driving, my ev displayed various blinking lights and a “check ev connection” message, followed by a “12v battery critical” warning. the entire system began shutting down in the middle of the road. i managed to pull over before the car completely shut off. 2) this malfunction posed a significant safety risk to me and others. the rapid deceleration and uncertainty of an imminent shutdown almost caused an accident, either from other vehicles crashing into me or from my inability to stop in time, potentially hitting another car. i have faced this life-threatening situation twice within a year due to the same issue. 3) the problem was confirmed by my dealership less than a year ago, and my car is currently being towed back to the dealership for re-inspection of the same issue. 4) the vehicle and its components have not been inspected by the manufacturer, police, insurance representatives, or other parties for the current situation. however, the manufacturer issued a recall for this problem last year after my initial report, incident, and repair. they claimed to have fixed the faulty issue or replaced the necessary parts, when my vehicle was repaired less than 12 months ago. despite this, i am experiencing the same critical problem again. 5) during the incident, my entire panel started blinking with a “check ev connection” message, followed by a red warning sign indicating a 12v battery critical failure warning. the system then went black, and the panel continued to blink white and black consistently while parked. the car cannot be started or moved.

The contact owns a 2022 hyundai ioniq 5. the contact stated that after the vehicle was parked on a slight incline on the road, the gear shifter was shifted to park(p), and the vehicle was turned off. the contact stated that while exiting the vehicle, the vehicle started to roll backward. the contact was able to jump back into the vehicle and depress the brake pedal to stop the vehicle. the contact stated that the vehicle was still in park(p); however, when the brake pedal was released, the vehicle started rolling away again. the contact had not engaged the parking brake. the contact stated that the vehicle was turned off and restarted and was able to shift into park(p) and the vehicle remained stationary. the contact stated no warning light was illuminated. the contact had not taken the vehicle to a local dealer or independent mechanic. the vehicle was not diagnosed or repaired. the manufacturer was not informed of the failure. the contact researched online and related the failure to nhtsa campaign number: 22v324000 (parking brake); however, the vin was not included. the failure mileage was approximately 25,000.

The contact owns a 2022 hyundai ioniq 5. the contact stated while driving 45 mph, the vehicle started to lose motive power, after which the message "critical battery level - stop car" was displayed, prompting the contact to pull over to the shoulder of the roadway. the battery warning light was illuminated. the vehicle was towed to the dealer, who diagnosed a failure with the integrated charging control unit (iccu) relay. the vehicle was not repaired due to the part being on backorder. the manufacturer was notified of the failure, a case was opened, and the contact was referred to the nhtsa hotline for assistance. the failure mileage was 59,000.

Car will start but has no propulsion. error says “check ev system”

My car suffered a failure of the integrated charge control unit ("iccu") which makes the car underivable. this is the third time that i have had an issue with the iccu. the first two times, it failed to charge the 12v battery, leading to a loss of all 12v systems and being unable to drive the car. this third time, the car now refuses to charge on ac power. hyundai has tried to "repair" this issue with software updates, but it doesn't fix it. now i am waiting for a remanufactured iccu to replace my broken one.

This is the second time i’ve taken my hyundai ioniq 5 in to hyundai as part of a recall “fix” for iccu failure. each time, the car has been operating fine, i take the car in for the “fix” as it’s required, and then shortly after the car breaks down while it’s in motion / operating. i’ve concluded these are not “fixes” and i have no ability to trust the safety or reliability of the vehicle. 1) iccu failure 8 days after recall “fix”. same thing happened the previous year. took the car in for the recall “fix” and shortly after the car dangerous broke down while driving. 2) car became a brick. 3) yes, hyundai service center has confirmed iccu fault. 4) yes, see #3 5) yes, minutes before the car became inoperable.

My vehicle’s iccu failed resulting in my 12v battery suddenly, and without warning, fail. leaving me stranded. this seems to be a widespread issue that isn’t being addressed properly as following the manufacturer’s list of recall updates never solved the issue up to my day of failure.

On the morning of february 3rd, 2025, while driving, i heard a pop. a few seconds later, as i approached an intersection, a yellow warning appeared that instructed me to "check the electric vehicle system". it minimized to a small caution light. i attempted to continue driving, pulling through the intersection; however, the vehicle had an abrupt loss of power; i was unable to proceed over 20-25 mph. in total no more than 2-3 mins passed from hearing the pop to loss of power. i pulled into a neighborhood, stopped the car, and consulted the owner's manual for direction on the warning light. while parked, and an estimated 8-10 minutes after hearing the first pop, i received a second warning, this time in red. it said "turn power off immediately. check power supply." i turned car off/contacted roadside, as advised in my manual, for a tow. after review at the dealership, i was originally told i needed a new 12v that it had died while i was driving. i authorized the replacement, though i also indicated to the service department that if that can happen, it really does not make sense and there should be a different warning indicator for a failed 12v that could be replaced roadside versus instructing for a tow.however, after replacing my 12v the service advisor indicated that the car pulled codes and that the iccu and its fuse seemed to have failed, which likely caused the damage to the 12v battery. after a few days of testing, my car was cleared for replacement of the failed iccu by hyundai's techline on february 10th. the dealer then provided a vehicle for my use while i await repairs. i was told a part could arrive the 18th or the 25th and the repair could take 3-4 days once the parts are received. it is still in shop with no updates. on 2/13/25 i filed a complaint to hyundai; i have not received a response to date. all recalls for these issues had been performed on my vehicle in november 2024; we can no longer, in good conscience, use this vehicle. it is unsafe.

Even after getting all recalls done my ioniq5 had an iccu failure. i feel that latest update which was supposed to fix iccu issue actually accentuated it. with number of complaints on this car for iccu failure there should class action law suit on hyundai

Iccu failure. vehicle abruptly reduced speed while on the road. hyundai has inspected the vehicle and confirmed the failure. "stop vehicle and check power supply" warning. "check electric vehicle system" warning. "12v batter voltage low. stop safely" warning. all first appeared within a few minutes of the vehicle losing power. vehicle has been at dealership for repair/replacement of iccu since february 7th.

Iccu failure preventing car from ac charging. in shop 25 days now but part not available and not given estimated repair time. car was bought new and has 24,600 miles on it.

Was pulling out of drive way. loud pop heard in the car. immediately car flashed warning telling me electrical system had an issue and i needed to pull over and have the car towed to a dealer for service. was told the part was related to the iccu and would take a couple days to arrive. part is now on back order. 3 weeks later i am still waiting with little to no update on timeline for repair.

My 2022 ioniq 5 had an iccu failure on february 2025. on february 12, 2025 i was not able to charge the car. i took it to the dealer twice for an iccu software update. the first software update was on october 15, 2024. the second software update was january 16 2025. the third time was on february 13, 2025 for an iccu failure. the car is at the dealership and waiting for the part so it can be replaced. if you need to do an inspection the car is at the dealership. there was no warning, it just will not take a charge. i have been waiting for a little over a month for the part to arrive at the dealership for replacement. i've call the dealership multiple times inquiring about the new replacement. they have no idea when this part will become available. i'm frustrated because no one knows anything so my car sits on their lot waiting for a part that i feel they should have in stock. hyundai has known about the iccu failures since 2022. why hyundai dealerships do not have iccu's readily available? knowing very well about these recalls and failures.

While driving on the highway in foggy conditions, the smart cruise control system and forward safety system suddenly shut off while i was going 70 miles an hour. this almost resulted in a car rear ending me due to the sudden deceleration. the following day, with clear weather, the same issue happened again despite nothing appearing to have caused this issue while i was driving. this is a very serious concern to suddenly stop on a highway.

The vehicle has had 2 12v battery replacements and 2 iccu failures in about 20 months and just 12,000 miles of ownership with over 100 combined days out of service for repairs.

Iccu failed during driving causing car to come to a halt on a busy road quickly, thankfully enough time to drive to side of road. car had been in dealer for iccu software update/recall 2 weeks before hand. whatever the current fix is for the iccu is clearly incomplete, at the seattle hyundai dealership there are 6 cars all waiting 6+ weeks on replacement parts for this issue. this seems like a significantly bigger problem than hyundai is admitting and they are not proactively addressing with urgency. thankfully we were only on a busy arterial not on a highway.

Iccu and hv fuse blew

I am filing this complaint to report a serious safety defect involving my 2022 hyundai ioniq 5. the vehicle experienced a sudden failure of the integrated charging control unit (iccu), which caused the car to completely shut down and lose power while in motion. my family member, who was driving at the time, stated that the car lost power and shut off without warning on the road, creating an extremely dangerous situation. thankfully, they were able to pull over without incident, but this type of malfunction could easily result in a collision, injury, or worse. i later discovered that this issue is part of a widespread iccu failure affecting hyundai ioniq 5 and other hyundai/kia evs. my vehicle has been at the dealership for over a month, and hyundai has informed me that the part required to repair the vehicle is backordered for 2–3 months, leaving me without my primary mode of transportation. this issue is not only a reliability concern but a serious safety hazard that warrants immediate investigation and intervention. a vehicle that completely loses power while driving is unacceptable, especially for a relatively new vehicle under warranty. i urge the nhtsa to investigate the iccu failures in hyundai ioniq 5 vehicles and determine whether a broader mandatory recall is needed due to the loss of motive power and serious safety risk. many owners are affected, and delays in repair parts are putting consumers in unsafe situations.

Turned on vehicle, immediately received "check electric vehicle system" message. drove ~1 mile back from coffee shop to work parking. halfway to work parking, message updated to safely pull over and stop vehicle while at stoplight. turned vehicle off during red light and turned vehicle back on during green light. "check electric vehicle system" immediately displayed. park at work parking. ~1 hour later, move car from work parking to guest parking to be towed to dealership, "check electric vehicle system" still displayed. dealership later confirms iccu fault.

Instrument cluster screen continuously resets itself while driving. speedometer and safety warnings not available.

Plugged the car into an l2 ac charger like i have for nearly 2 years, the car tripped a breaker in my electrical panel and after restoring power to the charger, the car would no longer initiate a charge on l2 power. confirmed this by attempting to charge at a public l2 charger, same result. took the car to hyundai and they confirmed the iccu needs to be replaced and it's a wait of up to 8 weeks.

Instrument panel on car will not turn on when car is started. thus, all advanced cruise control and safety systems do not function. car has not been to the dealership for repair yet. there were no warnings or any other indication that there was an impending problem.

My 2022 ioniq 5 had an iccu failure in march 2025. it has been with the dealership for 10 days. it does not charge on 220 v ac l2 charger. it does charge on public dc fast chargers but at approximately 120 kwh not 350 kwh. there are no error codes on the dash, however the chargepoint charger trips with a gfci fault. gfci fault in a high voltage system could pose a serious safety issue. chargepoint (the l2 charger manufacturer) support checked, and said they see a gfci fault when my car is plugged in. to make sure it is not a charger error, i had another car, a kia ev6 plugged in to the same chargepoint charger, and it charged normally.

My car is an ev. i was charging the vehicle and it quit. i had just enough charge to limp to the dealership where it was diagnosed with iccu failure. according to you records my car is not under a recall but the part failed. glad i wasn't on the road. so my car has sat at the dealership since february 24th. hyundai doesn't seem concerned about getting the parts to the dealership. this is why they can't give me an eta: "please note that part orders can take several days or even weeks to arrive depending on the availability and supply chain logistics, as outlined in hyundai's policies." so they are still turning out ioniqs but can't be bothered to make sure cars with an iccu failure are safe and can drive. i can't sell my car and i am stuck. i also believe the 1% you say are effected by this problem is much higher.

The office of defects investigation (odi) has received six complaints (voqs) alleging failures of enel x way's juicebox level 2 residential ev chargers. one individual’s complaint alleges that charging their vehicle with a juicebox led to an explosion in their garage that set fire to a home and rendered it a total loss. another individual alleges that a car caught fire in their driveway while charging with a juicebox. four other complaints describe electrical malfunctions tripping circuit breakers and disrupting electric vehicle charge cycles. additionally, odi has become aware of a communication sent to charger owners on october 2, 2024 and posted on enel x way's website that enel x way north america will cease operations in the united states and canada on october 11, 2024. ceasing operations could also impact the charging app and supporting software. odi has opened a preliminary evaluation to assess the scope, frequency, and safety consequences of the potential safety-related problem, including the safety impacts related to the app and supporting software. to review the odi reports cited in the opening resume odi report identification number document, go to nhtsa.gov.

On june 8, 2023, the office of defect investigation (odi) opened pe23011 to investigate allegations of loss of motor power on model year (my) 2022 hyundai ioniq 5 vehicles. some consumers reported loss of motor power immediately after a warning lamp illumination or reduction of motive power while the vehicle was in motion. this investigation found that the integrated charging control unit (iccu) may be subject to various conditions such as overcurrent, overvoltage induced at the end of charging, and certain thermal loading during operation that can damage its internal components and open the iccu fuse, resulting in an inability to charge the 12-volt battery. the vehicle could eventually lose all motive power, increasing the risk of a crash. in july 2023, hyundai issued a service campaign to address certain my 2022-2023 ioniq 5 and my 2023 ioniq 6 vehicles that may have low 12v auxiliary battery charging occurrences due to an iccu fault and may set the dtc p1a9096 “dc/dc converter input voltage sensor fault”. on march 15, 2024, hyundai filed safety recall 24v-204 for 98,878 my 2022-2024 hyundai ioniq 5 vehicles and my 2023-2024 hyundai ioniq 6, genesis gv60, genesis gv70 “electrified” and genesis g80 “electrified” vehicles. the recall remedy provides an inspection, and if necessary, a replacement of the iccu and the associated fuse. the iccu software reduces the risk of overcurrent and implements voltage peak reduction at the end of ev battery charging. the recall also includes a software update that revises the electric water pump operational threshold to reduce thermal loading during charging and driving. in view of the recall action being taken by hyundai, odi is closing this preliminary evaluation. the agency reserves the right to take additional action if warranted by future circumstances. to review the reports cited in the closing resume odi report identification number document, go to nhtsa.gov.

On june 8, 2023, the office of defect investigation (odi) opened pe23011 to investigate allegations of loss of motor power on model year (my) 2022 hyundai ioniq 5 vehicles. some consumers reported loss of motor power immediately after a warning lamp illumination or reduction of motive power while the vehicle was in motion. this investigation found that the integrated charging control unit (iccu) may be subject to various conditions such as overcurrent, overvoltage induced at the end of charging, and certain thermal loading during operation that can damage its internal components and open the iccu fuse, resulting in an inability to charge the 12-volt battery. the vehicle could eventually lose all motive power, increasing the risk of a crash. in july 2023, hyundai issued a service campaign to address certain my 2022-2023 ioniq 5 and my 2023 ioniq 6 vehicles that may have low 12v auxiliary battery charging occurrences due to an iccu fault and may set the dtc p1a9096 “dc/dc converter input voltage sensor fault”. on march 15, 2024, hyundai filed safety recall 24v-204 for 98,878 my 2022-2024 hyundai ioniq 5 vehicles and my 2023-2024 hyundai ioniq 6, genesis gv60, genesis gv70 “electrified” and genesis g80 “electrified” vehicles. the recall remedy provides an inspection, and if necessary, a replacement of the iccu and the associated fuse. the iccu software reduces the risk of overcurrent and implements voltage peak reduction at the end of ev battery charging. the recall also includes a software update that revises the electric water pump operational threshold to reduce thermal loading during charging and driving. in view of the recall action being taken by hyundai, odi is closing this preliminary evaluation. the agency reserves the right to take additional action if warranted by future circumstances. to review the reports cited in the closing resume odi report identification number document, go to nhtsa.gov.

Nhtsa received a petition on or about july 18, 2022, requesting that federal motor vehicle safety standard (fmvss) 141 be applied to all electric and hybrid vehicles operating in the united states. the petition can be reviewed at nhtsa.gov under odi number 11486072. fmvss 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. the standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 kg or less or are defined as low-speed vehicles. the standard became fully applicable to all such vehicles manufactured on or after march 1, 2021.on january 27, 2023, nhtsa opened defect petition (dp) 22-005 to evaluate the subject matter described in the petition. on june 24, 2023 and as supplemented on june 25, 2023, the petitioner notified nhtsa he was withdrawing his petition. the petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. based on the petitioner's withdrawal, dp22-005 is closed. closure of this dp does not represent a determination by nhtsa regarding the subject matter of the petition.