2022 HYUNDAI Ioniq 5

3rd ICCU failure. Was Driving and went into limp turtle mode. Was in a dangerous area for it to happen and took a while to get to a safe place.

The car stopped both Level 1 and 2 charging. But Level 3 charging worked. When it stopped in the middle of Level 2 charging, it tripped my circuit and bricked my Juicebix Level 2 charger. Hyundai replaced the ICCU.

The contact owns a 2022 Hyundai Ioniq 5. The contact stated that the vehicle was repaired under NHTSA Campaign Number: 24V868000 (Electrical System); however, the repair failed to prevent a failure from occurring shortly afterwards. The contact stated that while driving at 55 MPH, the vehicle was rattling abnormally. The vehicle was taken back to the same local dealer where it was diagnosed, and determined that all four tires needed to be replaced. The four tires were replaced. In addition, the contact stated that while driving at 35 MPH, the instrument panel abnormally illuminated. The vehicle was towed to the local dealer where the vehicle was originally purchased. The vehicle was later towed back to the same local dealer and diagnosed with a leak that contaminated the rear inverter. The vehicle was not repaired due to the costs and the warranty being invalid. The manufacturer was made aware of the failure. The failure mileage was approximately 132,000.

I plugged the car into our Juicebox charger and waited for the car to say “charging scheduled” before I walked away. My husband didn’t realize I plugged in and managed to back out of the garage, ripping the charger from the car. We need to buy a new charger now. We understand the car should never move if the charger is connected.

I have had all recall updates on the car including a recent one on 10/13/2025. Turned on the heater on the first cold night in Dallas this fall and got the engine warning light. Checked the ODB and code was P1A90(96). I was able to drive it to the dealer with a 40 mph max speed. The funny thing is my ICCU has already been replaced under warranty once like 16 months ago, so it seems the replacement parts aren't much better than the original. Dealer confirmed it is an ICCU failure and I'm now waiting on the part. Hyundai has NOT fixed this ICCU problem even when they replace with a new ICCU. Someone needs to hold them accountable for finding a real fix.

On November 29 2025 my 2022 Hyundai Ioniq 5 with 49000 miles was warming up in the driveway. I heard a pop sound from the back seat like a soda can being opened (or a fuse blowing). Immediately afterwards warning lights appeared on the dash saying "Check Electrical System." The vehicle lost power to accelerate and could not be driven effectively. After a few moments, another error saying "Power is Limited" appeared. This could have happened on the roadway which would have been hazardous to myself and other drivers. The car is scheduled to be diagnosed next week by Simmons Rockwell Hyundai in Elmira, NY. These symptoms are similar to the hundreds of other reports of ICCU failures in this car and similar models. On Sept 10, 2025 the car was previously issued software updates to the ICCU software , which were required under NHTSA Recall Number 24V868000. If this problem is proven to be an ICCU failure, the experience with this car is an example of the 2025 software update failing to prevent the ICCU Failure. I request swift action from the NHTSA to compel Hyundai to implement a permanent fix for my vehicle and all other afflicted models in order to make Americas roadways safe again. Until then, everyone should be extra careful when driving behind a Hyundai Ioniq, 5 because it is at risk of dying and coming to a complete stop at any moment. Hyundai is a large corporation and has the resources and technology to fix this, but they have not done so, despite there being more than 300 complaints to the NHTSA about these cars at the time of this writing.

Check Vehicle Electric System warming shows up on dashboard, then vehicles enters turtle mode and then cuts power shortly with violent jerking of the vehicle. Shortly after, all system shuts down, 12V is said to be weak and car cannot move.

Electric Drive System Inoperable, sustained an immediate failure upon engaging in Drive mode. Dashboard lit up with warning lights and messages. Luckily was just pulling out onto road when vehicle completely died. Tow service unable to start vehicle with jumper module. After being towed to dealer, was diagnosed with failed ICCU. The original ICCU was replaced previously in January 2025. Luckily was not underway on the road when it happened. There was no warning, no indication that there was any problem.

The Integrated Charging Control Unit (ICCU) failed - the car is no longer capable of driving due to the lack of ability to charge the battery. I was able to get it to the repair center. The ICCU on this model can fail in multiple ways, which includes the vehicle becoming inoperable at highway speeds. The issue first started 2025/11/13. I tried multiple charging units. It flipped the breaker on my home charger and caused issues for a public charger.