2024 Hyundai Ioniq 5 engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Aug 3, 2026AZEngineOther / Unknown

   The car engine shutdown mid drive. One minute before the complete stop, the car was stalling every 20 sec or so, then the acceleration stop responding to the drive pedal. The car was gliding to a stopping point. The "Engine " warning was on the display. Afterward, the car was towed to the Earnhardt Hyundai North Scottsdale, where the service center could not recreate the problem. They concluded that is a non issue since they did not observe the same issue during the test and…

   NHTSA complaint #11754557 · source
2. Filed Jun 15, 2026AZElectrical SystemEngineFuel, Hybrid & EV Propulsion

   On June 13, 2026, my 2024 Hyundai Ioniq 5 experienced a sudden and dangerous propulsion failure while in active motion. The vehicle had approximately 9,447 miles on it and was at 58% battery charge at the time of the incident. The vehicle was leased in January 2025 and has been serviced exclusively at the Hyundai dealership. While driving with two occupants, the vehicle abruptly lost all ability to accelerate. The dashboard displayed a critical warning: “Stop vehicle and…

   NHTSA complaint #11744328 · source
3. Filed Apr 11, 2026CAElectrical SystemEngine

   For the second time, the integrated control unit, ICCU, has failed to this is AFTER being replaced under the recall. The recall solution has not fixed the problem, and is a fake bandaid on a problem that means cars will totally stop working in the middle of the road. This is totally unsafe and unacceptable.

   NHTSA complaint #11730552 · source
4. Filed Mar 19, 2026MAEngineOther / Unknown

   The vehicle experienced a sudden failure of the 12V battery while on the road. The car stopped completely and became inoperable. At the time of failure, there were no tail lights or proper warning indicators working, which created a very dangerous situation, especially in traffic. I was stuck on the road for about one hour waiting for a tow truck. During that time, other vehicles were honking and passing by, increasing the risk of an accident. The vehicle had to be…

   NHTSA complaint #11725650 · source
5. Filed Mar 19, 2026VAElectrical SystemEngineFuel, Hybrid & EV Propulsion

   I was driving and the car gave an electrical system warning, slowed, and thereafter would not go above about 20mph. Fortunately this happened on a local, low speed limit street. I'd rather not think about what might have happened if this had happened on a highway. The Integrated Charging Control Unit (ICCU) is no longer working as it should. The problem has been confirmed by the dealer/manufacturer service station.

   NHTSA complaint #11725530 · source
6. Filed Mar 18, 2026VAElectrical SystemEngineTransmission & Drivetrain

   While driving I received the infamous "Stop vehicle and check power supply" warning, and it was then inoperable, needed a tow to the dealer for ICCU replacement. I can't believe you terminated your initial investigation into this in 2023 because they did a recall (which my car received). That recall did not fix the issue. It is March 2026 and Ioniq 5 and other models with the same electric system are dying on the road at the same rate as before. There is a large percentage…

   NHTSA complaint #11725342 · source
7. Filed Mar 17, 2026MEEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   I was merging onto the highway. I got a warning that I needed to check my electrical system. I was able to back down the highway ramp and park on a side street. Within 20 minutes the car was fully dead and AAA needed to tow it to the dealer. The dealer confirmed that the ICCU needs a replacement. My family is lucky this happened in a place we could safely get to a side street. Had it happened 5 minutes later we would have been stranded on the highway with 2 small children.

   NHTSA complaint #11724910 · source
8. Filed Feb 23, 2026VAElectrical SystemEngine

   ICCU failed after 14k miles. Car suddenly went into "turtle" mode (displayed on dash), car could only go 10 mph and my wife had to pull the car off the street asap and was a very scary experience. Dealer has confirmed the ICCU failure and given me a loaner vehicle. No eta on when the part can be fixed, just that it's current status is back order.

   NHTSA complaint #11719947 · source
9. Filed Feb 20, 2026CAElectrical SystemEngineTransmission & Drivetrain

   The car stalled while being driven by my son. It displaced an error code. The Car had to be towed to dealership. It was diagnosed with ICCU unit failure. Needs to wait over a months for parts.

   NHTSA complaint #11719483 · source
10. Filed Feb 17, 2026MOElectrical SystemEngineTransmission & Drivetrain

    ICCU failure: confirmed by dealership, submitting for your records - while driving the morning of 2/11/26 in Evansville, IN a warning message appeared on the dashboard stating 'Check Electric Vehicle System' followed by a rapid deceleration. Luckily there was not a vehicle behind me as they would have rear ended me. This failure occurred without warning and presented a significant safety hazard, leaving the vehicle stranded in traffic until I was able to restart it. Vehicle…

    NHTSA complaint #11718559 · source
11. Filed Feb 10, 202617,000 miVATowedElectrical SystemEngine

    The contact owns a 2024 Hyundai Ioniq 5. The contact stated that while driving approximately 60 MPH, the vehicle lost automotive power, with a burning odor entering the cabin of the vehicle. The message "Check Electric Vehicle System" was temporarily displayed on the digital display screen. The vehicle was towed to a local dealer and remained with the dealer. An appointment was scheduled to inspect the vehicle. The vehicle was not yet repaired. The manufacturer was not…

    NHTSA complaint #11716925 · source
12. Filed Feb 7, 2026ILElectrical SystemEngineOther / Unknown

    The ICCU on our 2024 IONIQ 5 (VIN: [XXX] ) failed on January 4, 2026, along with the 12‑volt battery. The vehicle had only 5,034 miles on it and was just 12 months and 14 days past our purchase date of December 21, 2024. At the time of the incident, the car was charged to 79% when it suddenly entered turtle mode. We were close enough to home to return safely, but the following day the vehicle had to be towed to the dealership. The dealer informed us that the car had…

    NHTSA complaint #11716393 · 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