2022 Kia EV6: engine overheating

Filed Apr 23, 2026 · Electrical · TX

The Integrated Charging Control Unit (ICCU) failed twice within four weeks. The first failure occurred in March 2026 and was repaired under recall SC327 with a replacement ICCU and fuse. The second failure occurred April 7, 2026, approximately 12 days after pickup. Symptoms: Vehicle failed to charge overnight on Level 1 and Level 2 circuits despite being plugged in. Later that day, while driving, a “Check Electrical System” warning appeared on the dashboard followed by sudden loss of power and acceleration. Vehicle fluctuated between 25-45 mph and could not maintain speed. Vehicle was driven approximately 2.2 miles to the dealership under its own power after warning onset. Safety risk: Sudden loss of power and acceleration while driving created a hazardous condition for myself. Dealer confirmation: The authorized Kia dealer confirmed a DTC for battery overheating and acknowledged the ICCU coolant was not fully topped off after the first replacement, suggesting the recall remedy was incompletely performed. The vehicle has remained at the dealer unrepaired since April 10, 2026. Component available for inspection: Yes, vehicle is currently at the dealership. Recall remedy concern: The SC327 recall remedy did not resolve the ICCU failure. A second failure occurred within two weeks of the repair. The dealer’s subsequent diagnosis of owner-caused undercarriage battery damage is contradicted by their own signed inspection report documenting all undercarriage items as passed with no damage noted

Filed Apr 8, 2026 · Electrical · IL

ICCU failure at 16k miles. The ICCU was replaced at the dealership on January, 29th of this year, so it is not available for inspection. The failure tripped a breaker at my home while it was charging possibly indicating a short circuit. The short circuit could have potentioally overheated and caught fire in my home. I took the vehicle to the dealership and they confirmed it was the ICCU and replaced it under warranty. I have a copy of the invoice received after the replacement was installed. I do not know what they did with the old ICCU after it was placed. There was no indication of pending failure that I noticed prior to this incident occuring.

Filed Apr 2, 2026 · Electrical · SD

Electrical propulsion failure resulting in 3 tow-ins. Vehicle goes into limp mode, slows to 20 mph on highway and then stops after about 2 miles. The issue appears related to the ICCU, fuse and 12V battery failures. History includes 6 attached ICCU related Repairs. #1 ICCU updated under recall SC271 at 31,678 miles. #2 Then the ICCU was replaced under recall SC302 at 45,059 miles. #3 Then the ICCU was replaced along with fuse and 12V battery after on road failure and tow in at 52,296 miles. #4 Then the ICCU was updated under recall SC327. #5 Then the ICCU, fuse and 12V battery was replaced at 69,849 miles under recall SC327 after another on road failure and tow in. #6 Then there was a ICCU overheat and charging fault related to a bad ICCU coolant reservoir cap after a charging failure and tow in at 70,957 miles.

Filed Sep 4, 2024 · Electrical · ID

The ev6 12 volt battery is not being charged by the main battery. It was recalled for overheating and not charging. I took it in and it was supposedly fixed. Took about three weeks. It happened again and I didn’t have my car for three weeks. I am now on my third time where the small battery is not charging and we were almost stranded.

Filed Jul 24, 2023 · Fuel system · DC

Inlet charging port overheats causing charging to be interrupted when using 40A or higher EVSE. This is dangerous because the charging port or the wiring harness behind it is overheating because of high electrical power which can cause a fire. Kia has acknowledged this problem by issuing a TSB which reduces the charging rate when the overheating is detected but this does not solve the actual problem with the port or wiring harness.

Filed Jun 21, 2023 · Electrical · VA

EV charging on Level 2 was overheationg the charging port, terminating the charging session. KIA released TSB ELE 283 software update. The software update throttled the charging so it only charges at half speed and does not overheat the port. To me this is a bandaid for faulty charging ports and that there is no guarantee there will be a failure of the port causing electrical failure and possibly even a fire. This was evaluated at the dealer and confirmed the charging speed is throttled. They could not do further evaluation unless I committed to leave the car for days, possibly weeks to work with KIA Tech Line to further diagnose. This is a known issue and others have had their charging port replaced after a lengthy stay at the service department. It appears this may be a bad batch of charging ports causing this overheating and failure

Filed Apr 15, 2023 · Electrical · NY

There have been multiple failures to charge on AC 220v current at both 9 and 8kW. Dealer states there is a fault where the battery management system or charging system is overheating which causes the vehicle to stop charging.