2025 Kia EV6 Fuel system Problems

2025 KIA EV6 ICCU (part#36401 1XFD5) failed at 2,658 miles. Failure occurred when power was applied after reversing out of a parking space, switching to drive and applying power. No safety issues as vehicle remained controllable. Vehicle went into "limp" mode. Build date of vehicle is 6/20/2025. KIA Dealer has replaced failed ICCU with updated unit (part#36400 1XFD6). No indication of failure occured prior to the failure (an audible "POP" heard from the rear cabin when the unit failed).

NHTSA ID

11736153

Incident

Apr 28, 2026

ICCU failure.

NHTSA ID

11728945

Incident

Mar 15, 2026

I was driving my car and the stop immediately and check battery sign came on. I had to have my car towed to the dealership. I read that the ev6 have ICCU problems and commonly need to be replaced. The car lost all acceleration and power and eventually stopped moving all together.

NHTSA ID

11723234

Incident

Mar 9, 2026

ICCU failure. Pulled out of driveway, heard a pop, received warning to pull over and check vehicle power. Car had to be towed to dealership but they are experiencing so many of these failures that they are extremely backed up on even being able to check out the car.

NHTSA ID

11721869

Incident

Feb 27, 2026

The ICCU unit failed. Limited speed and no charging capabilities. The Dealer has been informed and an appointment has been made 3 weeks out as they are too busy. The ICCU has not been inspected yet. No warning lamps or messages appeared before the problem started. After a loud POP or bang in the rear of the car 1 warning light appeared and 1 message. (See Attached) POP happened at 16:15 hrs on the attached graph.

NHTSA ID

11720446

Incident

Feb 24, 2026

ICCU failure

NHTSA ID

11720052

Incident

Feb 12, 2026

initially filed XXX (1/2/2026) 2nd (additional info) filed XXX (2/10/2026 3rd (3 page service report) XXX (2/11/2026) Vehicle is registered to Christopher Rojik, however it is my car that I drive, etc. today I am filing this for you folks that since I filed the complaint with Kia Corp. and sent them the service report, etc. Today, 2/19/2026 I received a formal Settlement Agreement and General Release to sign and accept. I am not signing it, as well as it fully releases Kia from any future issues, etc. outside of the warranty and whatever other details it claims. This will or should be the last for me to file. I had no idea they send me this kind of offer. As it is listed specifically as a "GOODWILL GESTURE" and they are not accepting fault or something like that. I attached inidividual pages, hopefully I can upload them as pdfs, we will see. If not I'll take quick pics and attach. thanks INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ID

11719182

Incident

Dec 31, 2025

While driving on a busy road at night, my vehicle displayed battery warning lights and went into "limp mode" which slowed me down to 25 mph before stopping completely. I was then stranded until a tow truck could be dispatched. The Kia dealer told me that the issue was an ICCU (integrated charging control unit) which they have to order. I have since learned that this issue is known and is common.

NHTSA ID

11713640

Incident

Jan 22, 2026

I was driving on the highway when I heard a pop like a loud fuse sound from the back seat area. Suddenly the car dropped 15 mph from 70 mph to 55 mph and the battery and electrical system warning lights came on and the vehicle said check electrical system. I was able to continue with my hazard lights on to exit the highway, at which point the max speed of the vehicle dropped to 45 mph. It would not go faster no matter how hard I pushed the gas pedal. I was able to pull over to a gas station and park in a spot but the vehicle had to be towed. When the tow truck arrived, the vehicle also flashed with the 12V battery low warning. It was diagnosed as a failed ICCU, which rapidly drained the 12V battery. The car is only 4 months old with about 7,300 miles. This is a serious safety concern, especially with the sudden failure and loss of power. I’m lucky I wasn’t hit and that I was able to get off the road before it totally died.

NHTSA ID

11707594

Incident

Dec 22, 2025