Hyundai Ioniq 5 Complaints (2025)

290 consumer complaints on file.

#11722111March 4, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, POWER TRAIN
While driving, car displayed a check electrical vehicle system warning light. The 12 volt battery completely died and could not maintain charge resulting in slower and then complete loss of propulsion. Towed to dealer and the following Monday determined it was an ICCU failure. Part is back ordered but verbally told on 2/24/2026 that part would be delivered in two weeks. We'll see!!! If this issue occurred while driving on an interstate at full speed with traffic it seems this might result in an accident since the max speed dropped to 25 MPH and then 12MPH after warning before being able to safely pull over.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721961March 4, 2026
ELECTRICAL SYSTEM
ICCU and fuse iccu and fuse p1a9096 error. Car had electrical warnings and lost power 2 miles from home with only 7000 on vehicle. Car was only able to go 10mph to get home. Parts on back order from Hyundai.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721609March 3, 2026
ELECTRICAL SYSTEM
I couldn’t start the car. I had to tow it to nearest dealership. I waited one week to get diagnosis and was told about ICCU failure. It took 45 days in the shop to get it fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721522March 2, 2026
POWER TRAIN
While attempting to leave home, the 'Check Electrical System' warning came on. The vehicle entered a 'safe mode' and was unable to accelerate. The car was towed, and the dealer confirmed a complete failure of the ICCU and associated fuse (DTC P1A9096). This is a known issue (Recall 24V-204) and created a dangerous situation.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721489March 2, 2026
ELECTRICAL SYSTEM, ENGINE
Check electric vehicle system light came on and power slowly diminished which meant the car was unable to sustain highway speeds. Had to be towed to dealership.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721318March 1, 2026
ELECTRICAL SYSTEM
ICCU unit failed in parking lot leaving us stranded. Over 30 days to repair. Common issue. Luckily we weren’t on the road as the vehicle goes into a very short limp mode which may not allow time to get off a busy highway.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721300March 1, 2026
ELECTRICAL SYSTEM
I had washed my vehicle in my driveway. As I was drying it off, I heard a loud pop sound. When I went to put the car back in the garage, there was a warning displayed on the dash advising to check the vehicle electrical system. I immediately opened the MyHyundai app and it had a warning of an issue with the elecrtrical system and advised to schedule service. I had had no issues with the vehicle or its operation prior to this suddenly happening today. I fear that this is an ICCU issue as I have seen numerous complaints on forums and Reddit of over 90K 2025 Ioniq 5 vehicles this year alone having this issue. That’s an awful lot of vehicles to have the same issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721246March 1, 2026
ELECTRICAL SYSTEM
Integrated Control Charging Unit (ICCU) malfunctioned. Turned car on and heard a popping noise, then car displayed check electrical system. Code P1A9096.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721203February 28, 2026
ELECTRICAL SYSTEM, VEHICLE SPEED CONTROL, FUEL/PROPULSION SYSTEM
On [XXX] while driving the car on a city street in Northhampton, MA, I heard a loud "pop" and there were multiple warning lights, beeps and messages indicating there was a problem with the electrical system. The car slowed dramatically and I was unable to drive at a safe speed to keep up with traffic. The car slowly lost power and I was able to pull over to the side of the road. The temperature was 15 degrees F - very cold, no heat and I had to stay with the car in freezing cold temperatures to await transport via tow to the local dealer. The tow service required that someone be with the vehicle in order to receive a tow. The dealer diagnosed the car with a failed ICCU - a well-known, increasingly common issue with these cars - and said there were already 10 Ioniqs on the lot awaiting replacement ICCUs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721136February 28, 2026
ELECTRICAL SYSTEM, POWER TRAIN
I was on the highway going at approximately 60mph when the car without any warning reduced speed to first around 40mph and then to 20mph all within a matter of a few minutes, causing me to pull over to the side of the highway. Luckily, I wasn't injured. I exited the highway, called my insurance company Geico and had the vehicle towed to the dealership where I leased this brand new vehicle from just about 7 months ago on a 2year lease. The dealer was kind enough to provide a smaller loaner vehicle but had no idea when my car would be returned, as there were others with similar failures ahead of me that were waiting for the part to arrive. Apparently, this is a known failure issue of the ICCU that Hyundai has done a poor job of addressing. I continue to make my lease payments while waiting for the part to arrive. In the meantime, I wanted to let the government know of my experience and how this could have had a disastrous effect on my family and other families with a similar build.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721050February 27, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
Drove 50 miles. Charged car at a supercharger. Unplugged car normally. Pushed start normally. Heard a light “pop” sound. Car would drive but with low acceleration. Warning lights came on. Then bright “stop now” lights and beeping. Then it died in the parking lot and would not start at all.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11721040February 27, 2026
ELECTRICAL SYSTEM, POWER TRAIN
The ICCU failed under normal utilization The vehicle went into limp mode which changes expected driving dynamics The dealer confirmed ICCU failure and the manufacturer has confirmed the vehicle is a lemon as per MA state law No warnings prior to the failure
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720932February 27, 2026
ELECTRICAL SYSTEM
Turned on my car one day after charging and heard a 'pop' from the rear of the car, followed by warning lights activating on the dash and an electrical system error message. I had the car towed to the dealership (Santa Monica Hyundai) and they confirmed the issue was an ICCU component failure. There were no warning signs or issues before the failure. The dealership currently has no ETA for a fix.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720929February 27, 2026
SEAT BELTS, STRUCTURE:BODY
My Ioniq5 has experienced a recurring water leak that has repeatedly exposed the left rear seat belt and seat belt retractor to large amounts of water. I noticed recently that after it had rained the left back seat belt was soaked and dripping water when pulled out. After fully pulling out the belt as far as it would go it was clear that the water had fully soaked the belt and retractor. It is unclear when this started or how long this has been occurring, as there was no warning or other indication that there was a leak until the belt happened to be put on soon after it had rained. I am uncertain if this poses an actual risk to the function of the seat belt or seat belt retractor. However, even though it is unknown if the water intrusion limits the seat belt's function, there is a perceived risk that this could corrode or degrade the function of the internal components due to the repeated water exposure. The car was taken to the dealership twice. The first time they claimed they were unable to repeat the issue. However, days later it rained again and the belt and retractor were again soaked. After the second return to the dealership they were able to confirm a leak in the glass roof of the vehicle that was allowing the intrusion to the seat belt and retractor. The car is still currently at the dealer awaiting repair for the water leak with an unknown timeline
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720921February 27, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
My Ioniq5 experienced a failure of the Integrated Charging Control Unit (ICCU) while driving. There was a loud "pop" noise from the back seat that occurred while driving, and afterwards the car experienced an unexpected braking/deceleration and was unable to maintain a speed over ~30MPH. After the "pop" noise -- a "Check electric vehicle system" alert appeared on the dash, and an alert that the car had entered a limited power state also appeared a few minutes later. My safety was put at risk due to the car unexpectedly decelerating and then losing the ability to maintain speed while driving on a busy highway. Other's safety was put at risk due to my limited ability to maintain speed and not impede traffic. There was no warning's prior to the sudden failure to indicate there was anything wrong with the vehicle. The car needed to be towed to the dealer due to the limited state the car was put in. It was confirmed at the dealership that the ICCU had failed and needed to be replaced. It was also confirmed at the dealership that the replacement part was the same as what had failed, which is concerning for mine and other safety that this is at risk of occurring again.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720895February 27, 2026
ELECTRICAL SYSTEM
While driving, loud pop sound came from rear of car. No prior warning or lights before this. Car immediately displayed a check electrical vehicle system warning light. Luckily we were somewhere were we could pull over immediately. Towed to dealer and they determined it was the ICCU that popped. Due to the ICCU failure, we could have completely lost car power if we didn't have somewhere to stop. Currently car is sitting at dealer with no ETA for getting fixed. Part is not available .
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720748February 26, 2026
ELECTRICAL SYSTEM
The Integrated Charging Control Unit (ICCU) failed on [XXX]. An electrical system warning light appeared on the dashboard as soon as I turned on the vehicle; a review of the diagnostic code via the Hyundai Bluelink app indicated that the vehicle was unsafe to drive. It was towed to Napleton's Hyundai service center in Urbana, Illinois. I was informed that the replacement parts were on a nationwide backorder. The repairs were finally completed on February 25, 2026. The repairs were covered under warranty; however, it was a disappointment and inconvenience for a practically new car to suffer a critical part failure and then to be out of commission for 50 days. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720506February 25, 2026
POWER TRAIN, ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM
ICCU failure at 5308 miles. heard a loud pop while driving and 12v warning system errors
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720364February 25, 2026
ELECTRICAL SYSTEM
I was driving on a 4 lane major artery on 12 / 30/2025 traveling approximately 50 mph. Heard a loud bang and car loss power and suddenly slowed. Vehicles behind me had to swerve to miss hitting me. The vehicle could move approximately 5 mph afterward. We pulled off the road onto a side road. We later found out the ICCU failed from the Hyundai dealership. It has been there since that date awaiting parts to repair
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11720208February 24, 2026
ELECTRICAL SYSTEM
ICCU unit failed on 1/27/26, vehicle entered limp mode and is unusable. This is affecting thousands of Hyundai Ioniq 5 autos, and probably others as well. Due to the widespread problem, Hyundai is unable to give an estimate on finding a replacement part.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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