Hyundai Ioniq 5 Complaints (2025)

290 consumer complaints on file.

#11715826February 5, 2026
ELECTRICAL SYSTEM
The ICCU failed after 5,500 miles and the car lost all power. Fortunately it happened in the driveway and otherwise could have been a life-threatening situation. This is a 2025 model that wasn't covered by the recall so it's obvious Hyundai has not solved the problem.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715811February 5, 2026
ELECTRICAL SYSTEM, FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL
The ICCU system's fuse failed.The car is currently with the dealership for repairs and could be available for inspection there if needed. The car was rendered inoperable and shut down while operating the vehicle. The abrupt breakdown could have been a hazard to the driver, passengers of the vehicle, and other drivers on the road. The issue was confirmed by the dealership's service technician. The vehicle has only been inspected by the dealership's service department at the time of writing. There was a warning just before the system/car shut down while driving. The warning sounded and said to "Stop vehicle and check power supply." This was the only time the warning appeared.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715756February 5, 2026
POWER TRAIN, FUEL/PROPULSION SYSTEM, VEHICLE SPEED CONTROL
I was at the grocery store and when I returned to my car and started it, I had an error message on the dashboard regarding the vehicle battery. When I put it into reverse, I heard a loud pop and received another error message. The car would only drive at 25 mph after that. I tried to drive home but the car died after a few miles and I was stranded at the side of the road. It was towed to a dealership and I have been told that it is an ICCU failure. At this point, I have been waiting 3 weeks for it to be fixed.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715638February 4, 2026
ELECTRICAL SYSTEM, POWER TRAIN, ENGINE
On [XXX], the vehicle was unable to be started - no lights, no power, unable to open the doors. I called Hyundai Roadside Assist and they sent someone from AAA a few hours later who was able to "jump start" the vehicle. I took it to the dealer, Manly Hyundai, on December 17th, 2025 and they determined nothing to be wrong with either the battery or the electrical system. On [XXX], while driving from home to the local grocery store, the car presented a warning light on the dash and the “gas pedal” stopped working. I was able to coast into a parking lot at which point an even larger warning light appeared and the vehicle then lost all electricity completely. I again called Hyundai Roadside Assist and they sent someone from AAA a few hours later who determined that the car was unable to be “jump started” and would have to be towed to the local dealer, Manly Hyundai. The dealer reported back to me that the component that failed is called an “ICCU” and is some kind of controller related to the charging and motors of the electric drivetrain. It is available to be inspected at the dealer currently, Manly Hyundai. My safety was put as risk because the car became essentially inoperable while driving downhill and gave no warning signs ahead of time before the lights lit up on the dash and I lost control. The dealer has confirmed that it is an issue with the “ICCU”. The dealer has inspected the component at their service department. The first warning light that appeared came at the same instant that the vehicle lost drive power. The second warning light that appeared came at the same time that the vehicle lost all electricity entirely. There were no indications that something might be wrong with the vehicle prior to the vehicle actually producing symptoms of being undriveable. 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
#11715604February 4, 2026
ELECTRICAL SYSTEM
The contact owns a 2025 Hyundai Ionic 5. The contact stated that shortly after purchasing the electric vehicle, while charging the battery there was a loud banging and the battery failed to charge. The vehicle was driven to the dealer, who diagnosed that the Integrated Charging Control Unit (ICCU) had failed and needed to be replaced. The ICCU was replaced, but the failure reoccurred. The vehicle was returned to the dealer under the State Lemon Law Act. The manufacturer was notified of the failure. The failure mileage was 200. The VIN was not available.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715585February 4, 2026
POWER TRAIN, ELECTRICAL SYSTEM
The car is a brand-new 2025 Ioniq 5 with only 2,949 miles. All of a sudden and without warning, it entered "limp mode" while driving and did not go past 25 miles per hour. I was close to home so luckily I was able to street park it safely. Called roadside assistance and the car completely powered off (died) in front of the tow truck. The dealership says it is an ICCU failure and need to be entirely replaced. The part is backordered with no ETA for replacement.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715482February 4, 2026
ELECTRICAL SYSTEM
The Integrated Charging Control Unit (ICCU) failed. While driving, we heard a 'pop' noise from the rear, which was a blown fuse. Immediately after, alarms were sounding, display showed electrical system failure, and car would only drive in turtle mode (extremely limited speed). Car was drivable for approximately 100 feet and then totally died. Car needed to be towed to dealer for repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715463February 4, 2026
UNKNOWN OR OTHER
The car lost power while driving. It lost power completely while driving it to the dealer. Had to be towed. I was lucky I was able to pull over out of traffic while it was losing power. Loss of propulsion in the middle of driving is a safety risk.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715424February 3, 2026
ELECTRICAL SYSTEM
ICCU failure. Car totally inoperable within 5 minutes of warning message. Towed to the dealership with no ETA on a fix. It has already been over two weeks.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11715138February 2, 2026
ELECTRICAL SYSTEM
My electrical warning light came on for the second time in under a year. The first time I was pulling out of my driveway, so I was able to stop safely. This time I was a block from my house, so I was able to safely pull to the side of the road. In both cases the car was towed to the dealership and both were confirmed to be a bad ICCU. The first time I was able to get it fixed within the week. This time the dealership has said the part is on back order and there is no ETA.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714849February 1, 2026
POWER TRAIN, FUEL/PROPULSION SYSTEM, ELECTRICAL SYSTEM
On 1/15/2026, my 2025 Ionic 5 Limited AWD car with 11K miles on it suddenly lost power about 1/2 mile from my home. I pulled over to the side of the road and within seconds the car was totally dead (nothing worked). After waiting 1 1/2 hours (in an unheated car with outside temperatures in the 30's (F)) the car was towed to the dealership, where the ICCU was determined to be the problem. The dealership apparently has 3 other Ionic's waiting for new ICCU's. My car has been in the shop ever since, waiting for the replacement ICCU to be delivered to the dealership (delivery is apparently expected sometime in the next couple of weeks).
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714811February 1, 2026
ELECTRICAL SYSTEM
Battery warning light went on as I left my house. Since this is an EV, naturally became concerned. Car was towed to Heritage Hyundai, Towson Md and I was later informed by the technician the ICCU went bad and this was a common problem for the Hyundai/Kia EVs which Hyundai/Kia have not fixed. The car is currently at the dealer's service department.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714794February 1, 2026
ELECTRICAL SYSTEM, POWER TRAIN
Diagnosis: ICCU and fuse failure. Situation: 1/17/26 No issues starting when starting/driving car to first store. Car started without issue and I drove to next store a few minutes away. Came out of store to start car and got a notification on dash to check electric vehicle system. Checked app and had error P1A9096 Air Flap Turned car off for a minute, turned car back on and still received the same error. Tried to drive back to house (only about 6 miles away) and realized the car was limited to 25 mph although no indication/notification of limit. Notification continued and I ended up getting a stop vehicle and check electrical system with flashing lights. Stopped and cycled off and on the vehicle a few times. Started vehicle and only check electrical system notification was on (no indication not to drive vehicle so I continued driving). Continued driving and heard what I believe was a pop noise and also got the notification to stop vehicle and check system. Pulled over turned vehicle completely off and checked app again. and Still only PA9096 error. Contacted Hyundai roadside. Truck driver contacted me shortly after letting me know they were on the way. Tried to turn vehicle around in parking lot so easier to tow. Vehicle limited to 1 mph. Vehicle died when I got in spot and wouldn't turn back on. Vehicle towed to dealer. 1/28/26 Over a week after issue, dealer diagnosed as ICCU and fuse failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714788February 1, 2026
UNKNOWN OR OTHER
ICCU failure.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714775February 1, 2026
ELECTRICAL SYSTEM
ICCU failure, car had to be towed to dealer. No loaner available, no eta on repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714759February 1, 2026
ELECTRICAL SYSTEM
The ICCU (integrated charging control unit) failed July 6, 2025 when the car had 6,800 miles on it. I was driving it on the road at the time and it suddenly would not go faster than 20 miles per hour. It was in the shop for weeks to repair. The replacement ICCU just failed again on January 31, 2026 at a mileage of 15,380. The car is inoperable and cannot be driven.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714586January 30, 2026
ELECTRICAL SYSTEM
ICCU failed with around 11k miles on 2025 Ioniq 5, around a mile from home Was able to drive back to home with reduced power Currently at dealership for weeks awaiting warranty service, no ETA on replacement part
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714517January 30, 2026
ELECTRICAL SYSTEM
The Integrated Charging Control Unit in our 2025 Ioniq 5 failed on vehicle startup. Fortunately the vehicle was parked when the part failed. There were no issues or symptoms prior to the failure and subsequent fault message. Failure of the ICCU has been confirmed by our local Hyundai dealer which is now in possession of the vehicle awaiting repair.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714371January 29, 2026
ELECTRICAL SYSTEM
ICCU failure. Towed to Vacaville Hyundai. Dealer diagnosed and confirmed ICCU failure. Barely got to parking lot - limp mode. Warning lamps: Check Electrical System. Also check 12v battery After parking: Stop vehicle and check power supply. message
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0
#11714361January 29, 2026
ELECTRICAL SYSTEM
Electrical system warning light came on and said to shut the car off immediately. The car was parked at the time and I was trying to start it. The 12V battery would not hold a charge after multiple items and the car was inoperable. The dealer has yet to provide any information but hinted at a likely ICCU issue.
Crash:
No
Fire:
No
Injuries:
0
Deaths:
0

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