Hyundai Ioniq 5 Complaints

1,350 consumer complaints on file.

#11709626January 8, 2026
ELECTRICAL SYSTEM
On the drive home the car dinged at me and put up the "Power Limited" message with the turtle icon. This limited me to 15mph maximum, so I ended up driving home in the shoulder as the roads are 50mph roads and would have created a major incident if I tried to stay in the lane. I was within a mile of my house so I limped home and pulling into the driveway the car switched to "Check Electrical Systems" and "12V battery voltage low. Stop Safely" as I pulled into the garage. This was at 8pm so I was not able to do anything else. I was able to have Hyundai Roadside Assistance tow the car, which did turn on next day in the morning to pull out of the garage and turn around. The car sat at the dealership for a week until they were able to look at it an confirm that the ICCU was broken. This happened right before New Years so I get taking a week to look at it. Right now they mentioned the part is on backorder and there is no schedule for repairs. This is a major issue for this line of cars and needs to be resolved. The car is not safe to drive long distance as this is the second time this has happened. For a 2023 model year it is almost a yearly occurrence now. My warranty will run out by mileage in ~44k miles and at that point this defect will be my responsibility.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11709562January 8, 2026
ELECTRICAL SYSTEM
Car failed while I was parked in the SFO airport cell phone lot. It was night and very cold. There was no warning of a problem. Car had to be towed to Hyundai of San Bruno. It is still there. DTC: P1A9096. Hyundai dealer confirmed ICCU failure. Not repaired in a timely manner to non availability of part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11709002January 6, 2026
ELECTRICAL SYSTEM, ENGINE
Received the following warning while driving my 2025 Hyundai Ioniq 5 SEL on the highway on X-mas night: "Battery Overheated! Pull over safely and leave the vehicle." Within a few miles, was able to pull over at the nearest exit and park the car off the highway. Then turned the car back on to see if the error message was still present and drove another mile, only to get the same error message. As soon as I pulled into an empty parking lot, the car lost power and was not functioning (ie unable to accelerate). I received a further "Battery Management System" error in the Vehicle Diagnostics dashboard. It was raining outside so was very uneasy that I was prompted to leave the vehicle with two young kids in the backseat. We took an Uber home which was a couple miles away from the parking lot where my stranded car was located. I had the vehicle towed to Hyundai San Leandro on 12/26/25, it was inspected on 12/30/25, and was notified by the dealership service center on 1/2/26 that the ICCU may need to be replaced to resolve the issue. They did not confirm whether they were able to reproduce the issue but I see two DTC error messages in my Hyundai app (DTC P1B9700 and DTC POA9B11). It was indicated that an ICCU was ordered which should arrive by 1/8-1/9 (3-4 days from 1/2) . If swapping in a new ICCU doesn't resolve the issue, then it was indicated that I may need a new BMS module. I was given the option to get a rental car from Enterprise (as early as the weekend of 1/3-1/4) and get reimbursed later or a loaner vehicle could be provided (if available) by the dealership sometime during the week of 1/5.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708890January 5, 2026
ELECTRICAL SYSTEM
Pulling car out of my garage onto the driveway heard pop from rear of vehicle and display of "Check electric vehicle system" message. My OBD2 scanner reported the P1A90 ICCU failure code. Vehicle was current on all recalls and has been regularly Hyundai serviced since purchase January 2023. After consulting with dealer, car was towed to the dealer. Awaiting notification on repairs. How many more owners need to go through this without a full NHTSA directed recall???
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708885January 5, 2026
ELECTRICAL SYSTEM
ICCU failure at just 10k miles. Was driving, car kind of "jolted" and warning came on screen saying "check electric vehicle system" then warning said "stop vehicle, check power supply." So I limped to a stop and got a tow. It sounds like an increasingly prevalent issue even though my specific VIN did not have an open recall. Does not sound like Hyundai is taking this seriously.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708864January 5, 2026
ELECTRICAL SYSTEM
On October 16th our ICCU blew. I know Hyundai says this only affects 1% of vehicles, but the 2 people we also know with the same car have had the same failure, so this seems impossible so I wanted to report it. - The ICCU broke and fuse blew while charging. It blew while charging at 24 amps and actually blew the adjacent breaker as well in our panel. - The ICCU and main fuse were confirmed to be blown by the dealer in October. - There were no symptoms or warning lights most of the time; it just blew our panel breaker and would no longer AC charge. While trying to charge it, it did briefly show an electrical vehicle system error code, but when we turned it off and back on it went away. - My understanding is that with a blown fuse and ICCU it does not charge the 12v battery, so while we could drive the car and not even realize there was a problem, the battery could die while driving and create a very unsafe situation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708691January 4, 2026
ENGINE, ELECTRICAL SYSTEM, POWER TRAIN
While charging at a level 2 charger (6 kW) the car stop charging at 61% for no apparent reason. I was unable to restart charging. Within 2-3 minutes of starting the car and driving, received a warning to “check the vehicle electrical system” and then within another minute or two, another warning to “stop vehicle and check power supply.” I was traveling under 20 mph the entire time.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708661January 4, 2026
ELECTRICAL SYSTEM
On December 26, 2025 (six months after leasing this new vehicle) the ICCU unit failed. The mileage is 5,555. This known defect poses serious safety risks as it causes the vehicle to be unexpectedly and immediately disabled. It can drive at only very slow speeds. Drivers must find a safe place as soon as possible to park and call for a tow. Specifically, I was leaving a parking lot and heard a loud pop from behind me. the dashboard immediately displayed a red warning to check the electrical system (which is the drive system in a BEV). Fortunately, I was able to back up back into the parking lot, park and call for assistance. Had I been travelling at highway speeds, it would have been much more dangerous. There was absolutely no warning that this failure was going to happen, so it can occur at any time and any place. The weather was cold and humid. It was raining at the time. This is a known issue that has affected all model years, 2022-2026, of the Ioniq 5. The dealer where I had the car towed confirmed that the ICCU unit and fuse have to be replaced. We are currently awaiting the parts delivery so the replacement can occur. The parts will be the same as those that failed (and have failed for the last five years in multiple Hyundai/Kia EV models), so I can never be sure that this will not reoccur in the future at a time/place that will pose a greater risk to our safety. The manufacturer needs to fix this known defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708642January 4, 2026
FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
While driving on highway, there’s loud pop came from rear area and then the “check electrical vehicle system” warning light came on. The car wasn’t able in turtle mode.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708625January 4, 2026
ELECTRICAL SYSTEM
My issue seems to be the ongoing failure of the ICCU ( Integrated Charging Control Unit ) in the Ioniq 5 vehicles. I heard the "pop" sound from the back seat area while driving. The dashboard immediately started displaying "check vehicle electrical system" errors, as well as "there may be a problem with the on-board charger" The Hyundai diagnostics code refers to is P1A9096 which, from what I've found, refers to the ICCU failing which leads to the 12v battery failing.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708594January 3, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
I had driven a few miles to a store and was inside for about 10 minutes. I went out to the parking lot and started the car by pressing the button. Within the first couple of seconds after starting, there was a loud pop sound, followed by alerts on the dashboard. Checking the onboard diagnostics, I saw an alert that the charging system had a fault. Using the MyHyundai app, I saw a diagnostic code of P1A9096. I was able to drive home (albeit limited to about 40 MPH on a road with a 50 MPH speed limit and traffic that drives faster than that) and park. Testing it later that night, I was able to start it, but soon after, there was a loud beeping sound and bright red alert on the dash warning me that I should "Stop vehicle and check power supply." The next morning, when trying to get it on the flatbed tow truck, the vehicle started, but when I tried to adjust the seat for the tow truck driver, it went entirely dead. The driver jumpstarted it, but it was difficult to get the car into gear to move it on the flatbed. Around this time, I noticed that the phone was showing two new diagnostic entries, both with code P056216. We eventually got it into gear and onto the truck, and then delivered to the dealer, where it is currently awaiting diagnostics. There was no obvious safety issue while I was driving, though I worry now that if I had tried to use the 12V system while I was driving, then the entire system might have failed while in motion.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708559January 3, 2026
ELECTRICAL SYSTEM
ICCU and 12V both failed
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708487January 3, 2026
ELECTRICAL SYSTEM
This vehicle is in for its second replacement of the ICCU unit. The first was on March 2023,
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708407January 2, 2026
ELECTRICAL SYSTEM, POWER TRAIN
Upon entering vehicle in the morning of 12/30/25, a notable smell was first present. After turning on the vehicle, the car dashboard showed a "Check electric vehicle system" warning. The car was not able to be put into any gear besides neutral. Car was towed to dealership, and received word on 1/2/26 that an ICCU failure was the cause.Thankfully this occurred while parked in my garage, so was not in immediate danger. Perhaps this isn't a safety issue, but I am not sure what would have happened had the ICCU blown while driving so thought worth reporting.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708406January 2, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Had car in for regular service. No problems reported by service department. Immediately after leaving the dealer, less than 1 mile away, a warning message came up on the screen that the car "may have experienced a charging/electrical event, and to contact my dealer immediately of service. Risk of system failure. I immediately returned to the dealer, and they did a quick diagnostic check, which revealed DTC code P0AA600. This is the second similar incident with this car. On 1/10/25 this car had recall campaign 272 performed, which was supposed to fix this problem. On 8/22/25 the car would not start and had to be towed to the dealer. They replaced the 12v battery and claimed the battery was defective.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708404January 2, 2026
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I was traveling 70mph on Interstate 70 when I heard a loud “pop” sound and the car immediately slowed down to 20mph in heavy traffic. The care then would not go over 20mph.The car was charged at home the night prior. On the dash was the “stop vehicle and check power supply” warning. This is the very common ICCU issues known to plague the Hyundai EV fleet. This is very dangerous when your are in heavy interstate traffic going at a high rate of speed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708336January 2, 2026
ELECTRICAL SYSTEM
The contact owns a 2023 Hyundai Ioniq 5. The contact stated that while driving 4 MPH, the vehicle lost power and stalled a mile from the residence. The message "Check Electrical System" was displayed. The hazard light was activated but quickly became inoperable. The contact called AAA towing, where a power booster was attached to the vehicle, and the vehicle was restarted. The contact was able to drive back to the residence. The AAA driver indicated that he had towed eight other similar vehicles to the same local dealer. The vehicle was towed to the local dealer, but was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 16,000.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708225January 1, 2026
ELECTRICAL SYSTEM
On January 1st, while driving on a highway, my vehicle experienced a sudden electrical/battery system failure. Warning messages appeared and the vehicle abruptly reduced power and speed, creating an extremely dangerous situation. This occurred in severe winter conditions, with snow on the road and temperatures below 27°F. The vehicle was unable to maintain safe highway speed, putting me and other drivers at serious risk of an accident. Hyundai Roadside Assistance failed at the time of the incident, as the mobile app did not work. I was forced to contact my personal insurance for towing and remained stranded at the location until approximately 7:00 AM. Due to this failure, I incurred over $400 in Uber transportation expenses. The incident was unexpected, occurred without prior warning, and represents a critical safety concern, especially given the vehicle’s low mileage. A sudden loss of power in highway and winter conditions is life-threatening and should be investigated as a potential safety defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708214January 1, 2026
ELECTRICAL SYSTEM, POWER TRAIN, FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I am reporting a serious safety defect involving my 2025 Hyundai Ioniq 5 (lease vehicle, brand new). While driving on a highway in Massachusetts during snowy conditions, the vehicle suddenly displayed a critical warning message “Stop and Check Power Supply” and lost power, forcing us to stop on the highway. There were two children in the vehicle, and the situation was life-threatening due to traffic speed, weather conditions, and lack of a safe shoulder. The vehicle is new and under lease, and this type of failure is unacceptable and extremely dangerous. The car had to be towed to Hyundai of Braintree, MA. This is a serious safety failure, not a comfort or convenience issue. I am concerned this defect could result in serious injury or death if it happens again, either to my family or to others. I am requesting a formal investigation into this defect.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11708208January 1, 2026
ELECTRICAL SYSTEM
Our 2023 Hyundai Ioniq 5 had the ICCU software update recall and subsequent complete failure of the ICCU, which was repaired. Yesterday the car again warned us of the 12v system failure and rendered it not only undrivable and unstartable, but also unlockable in the public parking area where it still sits awaiting a tow to the dealer tomorrow (they are closed on New Years Day. This is the second time the ICCU has failed, rendering the car totally inoperable and in this case stranding my wife in freezing cold.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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