2022 Hyundai Ioniq 5: engine stalls while driving

Filed Jan 29, 2026 · Transmission · MD

The ICCU has failed. This component was replaced approximately one year ago as part of a recall, but it has failed again. The vehicle is currently parked and cannot be driven until Hyundai provides a replacement part, which may take up to three months. The failure presents a safety concern, as the vehicle can shut off while driving and leave the driver stranded. The Hyundai dealership has confirmed that the replacement part provided by Hyundai—the ICCU—is the component that failed. There were no prior warning signs of failure, other than the vehicle refusing to charge on a Level 2 charger.

Filed May 20, 2024 · Electrical · 25,000 miles · NY

The contact owns a 2022 Hyundai Ionic 5. The contact stated that while driving at approximately 55 MPH, there was a loud popping sound coming from the rear of the vehicle, and the vehicle decelerated to 15 MPH before the vehicle stalled. During the failure, the 12-Volt battery not detected message was displayed. The vehicle was later towed to the local dealer; however, the cause of the failure was not yet determined. The manufacturer was not contacted. The failure mileage was 25,000.

Filed Jun 19, 2023 · Electrical, Engine · FL

Car literally DIED while driving. Went from normal speed to 12mph to 6mph to dead. ICCU failure.

Filed Mar 15, 2023 · Electrical · FL

The car SHUT OFF while driving cause of a 12v battery issue. imagine turning onto a major road just for this to happen. Car wouldn't go above 25mph and close to it's death it wouldn't go above 12 then just STOPPED. I couldnt lock it, I couldnt turn it on. I couldnt even move it from drive to park. How is this safe?!

Filed Feb 22, 2023 · Electrical · 28,000 miles · NY

The contact owns a 2022 Hyundai Ioniq 5. The contact stated while driving 59 MPH, a warning message advising to stop the vehicle due to low battery was displayed; however, the main battery was fully charged. The instrument panel lights turned off and the vehicle decelerated to 23 MPH. The contact veered to the right lane. While driving to the dealer, the vehicle stalled. The vehicle was towed to the dealer, where the Integrated Charging Control Unit (ICCU) assist, and the high voltage fuse were upgraded. Additionally, the battery was replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was notified of the failure and informed the contact they could not provide vehicle rental assistance because the dealer was unwilling to assist. The failure mileage was approximately 28,000.

Filed Feb 14, 2023 · Engine · CA

On February 6, 2023 at approximately 9:50 a.m. I was driving my Hyundai Ioniq 5 SEL northbound on CA Highway 135, Santa Maria, when I heard a loud pop coming from my car. Within a few seconds my car lost speed rapidly, from 55 mph to 25 then a second later 22 mph . I tried to accelerate - there was no response - the car maintained the 22 mph. A message appeared on the right side of the dash board in an orange circle “check vehicle system” with a small upside down triangle with letters EV also inside this circle and a “small orange battery” picture showed on the left. I drove the car onto the shoulder of the road and with my hazard lights blinking, drove a half block making a right hand turn onto Miller Street to get off the Highway. I entered CHC Medical Building’s parking lot. Immediately upon entering the parking lot, my car stopped dead, before I had a chance to pull into a parking space. My car was now blocking cars coming in and out of the parking lot. I called Roadside Assistance and reported the above, the time was approximately 10:19 a.m. A tow truck (AAA) was requested by Roadside Assistance. After my conversation with Roadside Assistance, I turned the car on again and got power briefly - I moved the car into a stall space and waited. My car arrived at the Hyundai SLO dealership shortly before noon. The ICCU and fuse failed, and replacements have been ordered but the ETA is unknown Abrupt loss of speed was very unsafe