2025 HYUNDAI IONIQ 5 Complaints

ICCU confirm dead by the dealer. IONIQ 5 2025 AWD. only had this car for 5 month, 4900 miles. vehicle stopped at the middle on the highway. luckey, no accident occur. no part avilable, no ETA for fix, no loaner from dealer.

Car's ICCU blew as I was pulling out of my driveway. Was able to limp to the dealer. They replaced the ICCU in a week.

ICCU failed less than 5k miles into my lease. I am now no longer able to drive the vehicle and there is no eta on getting a replacement since it’s on back order

When in cruise control, the driver attention warning message appears regardless of where my eyes might be, whether I am wearing glasses or sunglasses or not, with nothing obstucting the sensor, with the steering wheel adjusted higher or lower. I have since May of 2025 tried to figure out how to get it to work properly to no avail. The warning continues to appear with an alarm ubntil it turns the motor off completely, even at highway speed causing an extremely dangerous situation. Additionally, I depend on the cruise control to help me maintain a safe, legal speed. This malfunction, rather than being a safety feature, is a distraction to safe driving. It CAUSES distraction, rather than provide safety. Hyundai is fully aware of this deficiency, yet has not addressed it I know that Many have experienced this smae problem. It is time for a recall to remedy this problem.

The ICCU (integrated charging control unit) failed on the vehicle, which resulted in the vehicle not being able to charge the 12v battery. The vehicle was no longer able to be driven after the ICCU failed.

The ICCU component failed on me at 4,356 miles. Heard a pop with the car and then the dash started displaying electrical errors. To stop the vehicle and turn it off. The vehicle would not accelerate and would only go up to 25 miles per hour. Had to tow it to the dealership. Given a time frame of 30-60 days to receive the ICCU part for repair.

The contact owns a 2025 Hyundai Ioniq 5. The contact stated that after starting the vehicle, the battery warning light remained illuminated, and the vehicle failed to exceed 45 MPH while driving. The messages "Onboard Charger - Stop Vehicle" and "Power Supply" were displayed. The vehicle was later towed to the local dealer who diagnosed that the ICCU Module had failed and needed to be replaced. The vehicle was not yet repaired. The contact stated that during the failure, the electric battery had failed to recharge the 12-Volt battery as intended, which caused the failure. The manufacturer was notified of the failure and informed the contact that the vehicle was not included in NHTSA Campaign Number: 24V868000 (ELECTRICAL SYSTEM). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 8,000.

''Stop vehicle and check power supply'' At this point I heard a pop sound and the car died. The dealer said this is a ICCU problem.

At a routine service visit to AutoNation Hyundai/Carlsbad, I received a good report on the 2025 Ioniq 5 condition. Starting the car to drive home I heard a pop sound and noted a diagnostic code that confirmed the ICCU and associated fuse had blown. Since then, Hyundai has been unable to clarify the ETA of the back ordered parts. They provided a loaner but it’s not an EV.

On Sunday, 2/15/26 while backing out of my garage into the driveway, I heard a "pop" sound from the rear and the vehicle stopped and shut down with multiple warning/alerts on the dash. The error code reported was DTC P1A9096 which is indicative of an ICCU (Integrated Charging and Control Unit) failure as widely reported here and online by other owners. Vehicle was towed to the dealer and is currently awaiting diagnosis.