2023 Hyundai Ioniq 5 Complaints

On 11/7/25 , we were driving my 2023 Hyundai Ioniq 5 to a friend's home in rural [XXX] , a trip of approximately 160 miles. At around 5:00 PM, we stopped about halfway to our destination to charge the battery. The car would not charge above 47%. While we continued to attempt to charge the battery, the console displayed a Check Electrical System Warning message, and we received the DTC P1AA700 via BlueLink. We were concerned about our safety on the drive up to the mountains. We were afraid the car would stop running on the highway and cause an accident. We were also concerned the car would die in a remote area and we would be stranded. However, the dealership was closed for the weekend. We drove carefully to our friend's home. I contacted Stevens Creek Hyundai on 11/10/25 and arranged to bring the car in on 11/11/25. It had 13,652 miles on it at that time. Eventually, the dealer confirmed the DTC P1AA700 and said they would need to order a new EGMP battery. The car was in the shop for 1...

7 incidents of electrical drive problem incidents 1-3car would not start despite full battery Incident 4 same thing and car went to dealer, they said know problem and they would fix it overnight by downloading new software and charge about 400 for new 12V battery Incident 5 While on freeway using cruise control card speed varied wildly I disabled cruise control and with manual throttle same problem Incident. 6 In middle of traffic car went blank no lights or anything. I tried to restart 3 times and nothing, so I sat back and was in process of calling for tow. I did nothing and car violently accelerated and turned into steel pole. Only injury I had was bump on head that went away. As soon as the ghost mode engaged I hit the brake which likely prevented more damage to me, but front end of car was damage Incident 7 While I was detained someone else drove car to dealer and driver reported felt like driving on ice with rapid direction and speed changes Currently at dealer where neither de...

While driving the vehicle, the ICCU failed. The vehicle shut down in the middle of traffic without any warnings.

On Mar 29th, I got a 12v battery low voltage warning sign at 4pm. Jumpstarted the car and drove back to the home. On Mar 30th, car would not start so I had it towed to Downey Hyundai by roadside assistance. On Mar 30th, 12:41pm dealer confirmed that the it will need an "ICCU" and have ordered the part, but there are no loaners and no ETA for the part at this time. Problem has been reproduced and confirmed by dealer. There were no other warning signs prior to the failure.

I am writing to notify you of an Integrated Charging Control Unit (ICCU) failure on my 2023 Hyundai Ioniq 5, purchased in October of 2023. While driving home on March 4 2026, the dashboard displayed the warning "Check vehicle electrical system," and then a "pull over safely" warning. I had to leave the vehicle in a parking lot and walk home. It was towed to a dealer on March 5, 2026 to diagnose and repair the problem. The car has just under 17000 miles on it. I was told the dealer was swamped with Ioniqs with this problem and had no ETA for parts. Fortunately they will be able to repair our car next week. Hyundai claims the replacement part has been redesigned to address the problem. Interestingly, I'm reading that Hyundai has issued a recall for some vehicles of this make and model year for this very serious issue; mind bogglingly we received no such notice.