2023 Hyundai Ioniq 5 engine problems

Related recalls

No recalls on file.

What owners say

1. Filed Mar 24, 2026MIElectrical SystemEngine

   Car lost charge quickly, went into limp mode while I was driving on the highway. I had to pull of the road several times and try to get it to a charging station. It barely made it after the lose of power. Charged it to 80% and it would only go up to a range of 100 miles. Took it to the dealership and they confirmed it needed a whole new main battery. ICCU had already been replaced. Had to wait over 5 months for replacement parts.

   NHTSA complaint #11726747 · source
2. Filed Mar 5, 2026ILElectrical SystemEngine

   On Sunday, March 1, 2026, my vehicle suddenly malfunctioned while I was driving. The car abruptly lost power, would not accelerate beyond 25 miles per hour, and then completely shut down within minutes. This left me stranded on the roadside off the highway, which was both dangerous and extremely distressing. The vehicle was towed to the dealership, and it has now been four days with no updates regarding the diagnosis, repair plan, or estimated timeline. I have repeatedly…

   NHTSA complaint #11722144 · source
3. Filed Mar 4, 2026ORElectrical SystemEngineTransmission & Drivetrain

   Having the same ICCU Failure that all other Ioniq 5 owners have. On February 26th, I was heading to work when I heard a pop and car displayed warning lights saying check EV system and stop safely. Car was limped home and towed to dealer. Was told fix will take a month.

   NHTSA complaint #11721884 · source
4. Filed Feb 20, 2026WAElectrical SystemEngine

   My car reported an error "check electric vehicle system" and would not drive over 25 mph. I had it towed to the nearest Hyundai dealership. This was after the car repeatedly killed the 12 volt battery. This is a common issue known with the ICCU.

   NHTSA complaint #11719268 · source
5. Filed Jan 29, 2026CTElectrical SystemEngine

   The ICCU in my 2023 Ioniq 5 has failed for the second time. The 12V battery is dead and the car cannot be driven. It will be sitting at the dealership waiting for a new part for at least a month. Hyundai claims to have fixed the ICCU problem but from online reports it is clear that they have not solved this problem.

   NHTSA complaint #11714152 · source
6. Filed Jan 28, 2026MDEngineFuel, Hybrid & EV PropulsionTransmission & Drivetrain

   While stopped at a stop light, "check electrical system" warning flashed on instrument panel without any prior warning or malfunction. I was only able to move the car about 50 feet before all power and controls failed. I was in a middle lane and was barely able to move the car out of traffic. Tow truck driver with a large jump start battery pack was able to give it enough power for me to crawl it onto their flatbed, my small lithium jumpstart pack was only enough to get the…

   NHTSA complaint #11713902 · source
7. Filed Jan 18, 2026VAElectrical SystemEngineAcceleration & Cruise Control

   My 2023 Hyundai Ioniq 5 suffered a sudden Integrated Charging Control Unit (ICCU) failure that put me in grave danger. As I left my workplace in the evening, I heard a “pop” sound and got the dashboard warning, “Check Electrical Vehicle System.” It was unclear what the warning meant. I had 65% charge left at that point. As I began driving, the gas pedal “stuck,” not allowing me to accelerate past 25 mph, and it felt like the car was dragging. I did not know what was…

   NHTSA complaint #11711755 · source
8. Filed Jan 14, 2026CAElectrical SystemEngine

   ICCU failed while driving, car limited speed immediately. This was after software recall was preformed a few months prior. Car went limp mode and repairs are going to take an indefinite time.

   NHTSA complaint #11711010 · source
9. Filed Dec 29, 2025VAElectrical SystemEngine

   I purchesed the Hyundai ionic 5 2023 from hyandai dealer ship. It had 42 k miles. The car ran good. So I got it. They promised me before the I bought they would charge it up free. When I signed the paper they said they couldn't charge it for me. I drove 5 miles the original battery died. I almost got to accudent only 5 miles away. I figured it was original battery. I change battery. I get tow truck to take home i put new battery in it. Then 5 days later the main iccu stopped…

   NHTSA complaint #11707636 · source
10. Filed Nov 19, 2025FLElectrical SystemEngineFuel, Hybrid & EV Propulsion

    ICCU failure, confirmed by dealer. Vehicle was parked in garage connected to charger. The ICCU fuse blew, and the house breaker was tripped. The vehicle failure also ruined the Grizzl-E EVSE (charger).

    NHTSA complaint #11700370 · source
11. Filed Oct 20, 2025WAElectrical SystemEngineTransmission & Drivetrain

    ICCU Failure — Severe Safety Risk and Repeated Incident The ICCU in my Hyundai has failed twice. Both times, the car suddenly and completely lost power while I was driving — no warning lights, no gradual slowdown, just total loss of control. This created an extremely dangerous situation that put me, my passengers, and everyone around us at risk. When the ICCU fails, the vehicle shuts down instantly and becomes completely inoperable. During the most recent incident, I spent…

    NHTSA complaint #11694439 · source
12. Filed Sep 12, 2025CAElectrical SystemEngineTransmission & Drivetrain

    Had all previous open recalls for iccu performed. No previous warning in car. Driving unto free way. Loud noise like a tire pop. 12 volt low power warning on dash screen. Car began to lose power. Picture of a turtle shows up. Low power warning. Car lost power within 10 seconds. And couldn't accelerate. Extremely dangerous. Once completely stopped the car turned off and couldn't start again. Was able to get car to turn on with jumper cables by tow truck. But couldn't get to…

    NHTSA complaint #11687016 · 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