2025 Hyundai Ioniq 5 engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Sep 8, 2026HIElectrical SystemEngine

   Full electrical power system failure. Heard a loud pop noise emanating from under the rear seats of the car. The power. Failure lights came on and the car lost power. We were able to get the car to slowly drive back to the garage where it completely shut down and was inoperable from that point on. Car has been towed to the local dealer for diagnostics and repair.

   NHTSA complaint #11762941 · source
2. Filed Aug 31, 2026CAElectrical SystemEngine

   I heard a loud popped sound from the back of my car while driving home. The car lost power and eventually died on the street. The war displacy came on to tell em to check electrical system. I originally bought th car from Capitol Huyndai in San Jose on September 2025 and it has 5992 miles. I towed the car to Dublin Hyundai for repair and confirmed the DTCP1A9096 for ICCU computer failing to charge the 12 v battery. It was a well known recall . I do not have any update on the…

   NHTSA complaint #11761068 · source
3. Filed Jul 15, 2026CAEngineFuel, Hybrid & EV Propulsion

   The car entered a failed ICCU state (not confirmed until the car was looked at by Hyundai at the dealership) while I was driving down to Ano Nuevo regional park. Received a warning on the dash that said that electrical system has failed and to pull over. It restricted me from going over 10 mph on Highway 1 and I eventually pulled over the side of the road and got towed to the dealership. The car is home with me now but I do not feel safe driving this vehicle after all of the…

   NHTSA complaint #11750561 · source
4. Filed Jun 8, 2026CAElectrical SystemEngineFuel, Hybrid & EV Propulsion

   When I started the car at 10pm , a loud pop was heard and warning lights on the dashboard indicated an electrical problem. I turned off the radio and anything extra that could use up power; during the next 45 minutes I took surface streets instead of the freeway to drive 22 miles back home and speed was limited to 40 mph. The next day the same warning lights were on the dashboard and speed was limited to 20mph; car lost power after 1 block. Car was towed to the dealer, where…

   NHTSA complaint #11742619 · source
5. Filed May 4, 2026NJCrash1 injuredTowedAirbagsBrakesEngine

   On April 20th while parking the vehicle suddenly had a power surge crossing over multiple curbs and across a parking lot and landscaped areas and hitting a tree. The vehicle refused to brake and the driver airbag never deployed.

   NHTSA complaint #11735454 · source
6. Filed Mar 23, 2026NCElectrical SystemEngineFuel, Hybrid & EV Propulsion

   For the HYUNDAI Ioniq 5 XRT, the ICCU, fuse and perhaps hybrid battery malfunctioned. We were in a disabled car on a 4 lane highway with traffic: On February 10, 2026, as we drove out of our home we heard a loud pop. As we got out onto a large 4 lane road near our house, the notice “Check Electrical System” came on and the car’s power was drastically reduced. We made a U turn and drove (20 mph) back to our driveway. We were fortunate that this was mid-day and the road was…

   NHTSA complaint #11726388 · source
7. Filed Mar 2, 2026TXElectrical SystemEngine

   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.

   NHTSA complaint #11721489 · source
8. Filed Feb 12, 2026CAElectrical SystemEngine

   The ICCU (Integrated charging control unit) failed, causing my car to go into "Limp mode" where it was unable to accelerate over 44 mph. This put my safety at risk as I was unable to accelerate on the freeway. The Hyundai dealer confirmed the problem and it is still there, with no estimated time for repair due to a shortage of replacement part. It was not inspected by the police or insurance. There weren't any warnings or symptoms prior to the failure. Hyundai has issued…

   NHTSA complaint #11717485 · source
9. Filed Feb 4, 2026CAElectrical SystemEngineTransmission & Drivetrain

   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…

   NHTSA complaint #11715638 · source
10. Filed Jan 26, 2026KYElectrical SystemEngine

    ICCU FAILURE. Went to start vehicle (at full charge) and warning light came on "Check Battery Health". Wouldn't move, got towed to service center. Diagnosed as an ICCU failure. Car is 6 months old, 9,400 miles on it.

    NHTSA complaint #11713461 · source
11. Filed Jan 14, 2026CAEngine

    The diagnostic trouble code (DTC) P1A9096 in a Hyundai Ioniq 5 indicates a "DC/DC Converter Input Voltage Sensor Fault" within the Integrated Charging Control Unit (ICCU). No recall has been issued yet but this is a known problem.

    NHTSA complaint #11710985 · source
12. Filed Jan 13, 2026ILElectrical SystemEngineFuel, Hybrid & EV Propulsion

    On [XXX] my Ioniq 5 stopped operating. It was totally dead. Could not be jumped. Car was towed to the dealership where they had replace the battery, ICCU and fuse. It took about two weeks for this to occur. The car had 3500 miles on it when this happened. Prior to the car not stopping an electrical warning light came on and the car speed was limited to 25 miles an hour but totally ran out of juice in about 10 minutes. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF…

    NHTSA complaint #11710708 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology