2023 Kia EV6 Complaints

ICCU failure

ICCU Failure. It's been replaced by Kia under warranty. Initially Level 2 charging failed multiple times. Luckily mine didn't die on the road, but it very well could've like others reported.

In November 2025, after charging car overnight, backed out of driveway and began to drive. Within 100 feet, received red error message and tone: “Stop vehicle and check power supply”. Stopped the vehicle and got it towed to Kia dealer, who confirmed that the ICCU had failed, despite the car having received the software patch purporting to fix the problem. The ICCU was replaced under warranty within a week. We were fortunate that this occured very close to home, without safety consequences. Ten minutes later, the car would have been travelling at 65 on a highway with no shoulder for long stretches, which would have been very dangerous. This was a certified preowned EV6 with less than 9000 miles on it. The 12 volt battery was brand new, having been replaced 3 months earlier with an AGM battery as a possible preventative measure for this issue.

ICCU failed. Towed to dealer and awaiting a replacement.

ICCU failed (first of two incidents).