2024 HYUNDAI IONIQ 5 Complaints

Car suddenly out of the blue reported electrical system problem and battery problem. It also entered turtle mode where it would not go more than 10 MPH. If accelerating across an intersection this would have been extremely problematic if expecting to be able to travel faster than that. Towed to dealer that said it is a failed ICCU. This is a common failure mode and there needs to be a fix and safety recall for this.

On January 31st, 2026, not long after starting a journey in my car, I got a “check electrical systems” warning. I was close to home so was able to turn around and drive home. Just before pulling into the driveway, the warning changed to a “power limited” warning. On Monday Feb 2nd, I had the car towed to my local dealership, where it has been since. The dealer confirmed that it was an issue with the ICCU component which is on back order to this day.

Received “check electrical system” warning when turning on vehicle. Car towed to service department. Diagnostic said it was an ICCU failure with a back ordered part and no clear timeframe on when it would be in stock and fixed.

Missing a spot weld point on liftgate frame panel and rood panel. Also, the panel gaps are open widely compare to left and right side. No accident happen, I am from a collision center, I found these factory defects.

When a car is in the process of passing me on the left during a left hand curve on the highway at highway speeds, the rear left radar sensor seems to have set off a forward collision warning. This caused the ioniq5 to do an emergency collision brake. I had to press on the accelerator to cancel the emergency brake while the other car passed me on the left. There were no cars in front of me that would have triggered a frontal collision emergency brake.

The ICCU failed at approximately 14,000 miles. I was driving on a residential street and was able to park on the side of the road, so there was no danger, but the car became undriveable

ICCU failure. Put vehicle in gear and heard a pop from the back. Dash said something about check vehicle soon. approximately 5 minutes later chimes went off and dash said another electrical warning that sounded more serious. Towed to dealership. Said ICCU was bad

The ICCU and fuse failed, rendering the vehicle unusable and stranding my wife and child. The problem has been confirmed by the dealer. The component was inspected and confirmed to have failed. There were no warnings or indications of any kind prior to failure. My wife heard a pop from the back of the vehicle, then all sorts of warning lights lit up and the vehicle stopped.

a warning "Stop immediately! Check Power Source" with loud beeping occurred and we were able to pull over and park safely. However, we were a 30 minute drive from home and in a downtown urban area. Took the next day off of work (essential healthcare worker at a hospital) to have car towed to dealership. ICCU failure. Told it could take months for replacement part to be shipped. Given a loaner car. Concerned that Hyundai does not have a real solution for this problem and that I cannot ever drive the car far from home again without risking the same thing happening again.

On November 21, 2025, while driving at approximately 60 mph and with approximately 15,685 miles on the vehicle, my 2024 Hyundai Ioniq 5 suddenly experienced a loss of automated systems including adaptive cruise control, lane keeping assist, and forward sensors. The failure occurred without warning. The following day, the 12V battery was completely dead and the vehicle required a jump start to operate. The vehicle was diagnosed with a failed ICCU (Integrated Charging Control Unit). The ICCU was replaced by the dealership on January 6, 2026, under warranty. There were no crashes or injuries as a result of this incident. The sudden loss of driver assistance systems at highway speed poses a significant safety risk, as drivers may be relying on these features and have no warning before they cut out.