Hyundai Ioniq 5

"The Integrated Charge Control Unit (ICCU) failed at around 33000 KM. This is despite getting all recall servicing related to the ICCU. It was apparent as the 12V lead-acid battery that powers the vehicle electronics had fully discharged. Normally it is recharged by the vehicle battery when not in use. The vehicle was dead in the driveway and was towed to the dealer for analysis. The 12v battery and ICCU needed to be replaced. It took about 4 weeks for the parts to arrive for the repair. Most of the vehicle charging occurs with a level 2 charger. This problem is thought to be more prevalent with level 2 charging in cold weather but I am not certain if that is true."

"ICCC recalls: two sets of firmware updates done in house as although OTA was advertised for the car it was not adopted for the Canadian Market. Although my module did not fail but I did have to replace the 12V Battery at my expense as its failure was not deemed to be the result of an ICCC module failure."

"Electric Control Charging Board had to be replaced just before recall on this board"

""I had a failure of the ICCU. Failed while driving and rendered the car completely dead. Towed to a dealer and what was to be a two week fix turned in to a 2 month fix. I have no confidence that it is resolved and since it fails without warning I have lost confidence in the car and the Manufacturer. This is not a one off problem as many owners have reported similar issues including months of waiting for repairs. I will never purchase another Hyundai product again. The ICCU as I understand it is the part that controls all electrical routing. It charges the 12volt when needed, directs the high voltage from main battery to the motors. So it is absolutely necessary for this car to run. Happened at 17,400 miles. Furthermore because I complained about the time it took for repairs my dealer that I bought the car from banded me from their service department. I now have to drive 25 miles to another dealer.""

""Our ICCU failed completely. We had the vehicle towed to a Hyundai dealership. The part was on back order, so we were without that car for 9 weeks. No loaner car was available. We had to call Hyundai and make a complaint before the part was shipped.""

""The Ioniq car lines 5 and 6, the GV60, and as far as I know the Kia EV6 and other Kia EV's all have the same ICCU component which is a major failing point (supposedly 1.6% failure rate triggering a recall of the vehicles). This seems to be a wear item, and it is worn down by use of the vehicle, charging the vehicle, and will fail on all models eventually. The part is on back-order constantly, and service can take months depending on your location.""

"ICCU failure prevented non-DC charging."

"ICCU failure prevented non-DC charging."

""First it was doing strange things like shutting my ev charger off and on, then it died totally.""

"Need to replace 12v twice since new."

"The car discharged the battery many times."

"car would not start. Ended up getting a replacement battery off of Amazon and friend installed it."

"One of the wires to the VCU was corroded and was throwing an error and it took a couple weeks for the shop to diagnose the problem."

"The ICCU that is supposed to charge the 12 volt battery failed. Parts delivery is taking a long time."