2023 Kia EV6 fuel system problems

Filed Sep 20, 2026 · Electrical, Engine · MO

The ICCU on the car died in the middle of the street, car would not shift out of park. Car completely died after a few minutes.

Filed Jun 14, 2026 · Electrical, Fuel system · CA

First ICCU the power completely went out on 2/23/26. Power went out again April, 2026. Currently car is immobile and unreliable and not safe for driving due to power failures. Towed car to Kia Cerritos. Car supposedly "fixed" (with other issues I've reported to KIA of America & CA BAR/DMV) Currently 12V battery is not holding charge as of 4/27/26, 4/28/26, and 5/2/26. I received a letter from KIA stating ICCU and inability to charge, Keep this Letter in your Glove Box for a free diagnosis and possible no cost servicing. As an older American this is inherently unsafe, as I travel for work and cannot be stuck on the road. The vehicle suddenly loses power in traffic. It simply stops running. This is my 5th attempt to file this very complaint between April and 6/14/26.

Filed May 15, 2026 · Electrical, Fuel system · VA

ICCU failure, a well known issue with these cars.

Filed May 12, 2026 · Electrical, Fuel system · MD

The ICCU unit failed. The message "Check Electrical System" appeared on the instrument cluster. Low-voltage battery voltage was 12.0V and vehicle speed was limited to 60 mph. Maximum speed was gradually reduced to 30 mph over a period of 40 minutes (voltage was 11.5 V) with minimal 12V loads. I pulled over and called a tow truck to the nearest service center. Kia confirmed the ICCU was defective and replaced the part under warranty.

Filed Apr 19, 2026 · Electrical, Engine · GA

*ICCU assembly and ICCU fuse fault (a kia recall SC327( the federal safety agency ID: 24V867000) for ICCU was performed months early but does't help AND iccu crash) *yes - cars stop workind in the midle of nower at 317 mile away from home with 5 persons in) *yes ( kia already performed recall SC327 for our car but doest help and the ICCU crash) *yes *yes-vehicle broke down while driving.Had to be towed to closest Kia dealer(the incidend hapened 317 miles away from our home Dacula GA 30019)

Filed Apr 18, 2026 · Electrical, Fuel system · FL

Got in my car to leave a store and heard a loud pop and noticed a smell like an electric motor burning. Backed out of my space to drive home and the car displayed several error messages- Check electric vehicle system, turtle mode, power reduced. I was stranded and had to order a tow truck to be towed to the dealer and get a ride home.

Filed Apr 12, 2026 · Electrical, Fuel system · IL

Repeated failed attempts to repair ICCU culminating in ICCU failure. May 15, 2024 – Initial repair attempt (ICCU-related recall/service). September 5, 2024 – VCMS logic recall performed. December 19, 2024 –second repair attempt for ICCU-related issue. October 16, 2025 – Limp-home logic recall performed. March 11, 2026- Vehicle experienced a complete loss of power and was rendered undrivable. Repeated attempts to avoid ICCU failure still resulted in said ICCU failure and a loss of propulsion event while vehicle was on the road.

Filed Mar 30, 2026 · Acceleration, Electrical · VA

I was driving 40mph and received a yellow error message along the lines of "electrical system issue, please check" and my speed was limited to 25mph. After trying to get the car to a safe location (as I was on a narrow two-lane road), the error changed to a blinking red error and my speed was further limited to 12mph. I was unable to get the car one mile to the dealer for service, so I stopped the car in a parking lot and had it towed to the dealer. The dealer diagnosed the problem and replaced the ICCU (2nd time on this car) and the 12 volt battery.

Filed Mar 3, 2026 · Engine, Fuel system · MA

On April 24, 2025, I plugged my Kia EV6 into my 48-amp hardwired ChargePoint HomeFlex at 7:26 PM. Around 10:30 PM I heard a noise outside but did not investigate. At 12:25 AM I noticed I had not received a “charging complete” notification. The Kia Connect app showed the vehicle at 74% and no longer charging. The ChargePoint app was unresponsive.\n\nThe next morning I found the charger’s 60-amp breaker had tripped. After resetting the breaker and rebooting the charger, the EV6 would not start charging and displayed no “Charging started” or “Charging unsuccessful” message.\n\nI then attempted to charge using a portable Tesla Level 1 charger on a 120V GFCI outlet. The EV6 briefly announced “Charging started,” but the dash showed no charging data. The outlet’s GFCI breaker tripped. After resetting, the breaker immediately tripped again when reconnecting the vehicle.\n\nI attempted to drive to a nearby DC fast charger. Upon shifting into drive, the vehicle displayed “Check electric vehicle system” and entered power-limited mode (would not exceed 20 MPH). I returned home. While backing into my driveway, the vehicle triggered a red alert with “Stop vehicle and check power supply.”\n\nThe vehicle was towed to a Kia dealership. They diagnosed a failed ICCU (Integrated Charging Control Unit) and high-voltage fuse. The ICCU recall issue is known for this model. Repairs took over two weeks due to parts delays. The ICCU and high-voltage fuse were replaced.\n\nThe ICCU failure also damaged my home ChargePoint charger, which required replacement under warranty

Filed Mar 2, 2026 · Electrical, Fuel system · WA

1st instance: Battery Coolant errors that occurred on and off. 2nd instance: The ICCU unit failed and car was not able to charge via level 2 and only fast charge. Car was still operable. Dealer replaced ICCU 3rd instance: The ICCU failed and car was rendered inoperable. Dealer Replaced ICCU. We are now on our third ICCU since we purchased the car in 11/26/2022. This would be considered a lemon law