Kia EV6 won't shift problems

Filed Nov 3, 2026 · Electrical · WA · fire

My 2023 Kia EV6 was subject to recall SC327 (the federal safety agency 24V‑867, ICCU); the recall remedy on Nov 19, 2024 was an inspection and software update only. After the remedy, the car repeatedly lost all 12-volt power (Feb 2025 and Apr 2025). Each time, the dealer said it could not find the cause — its hands were tied, it said, because Kia corporate required a diagnostic code and some codes did not yet exist for a car this new — and it repeatedly replaced parts, including the 12V battery twice and the battery sensor, to "hope for the best." On May 12, 2026, while driving about 25 mph, I heard a loud pop/bang from under the car, an electrical warning appeared, the vehicle lost power and stopped in traffic, and would not shift out of Park or move. The dealer found the high-voltage box exploded, all high-voltage fuses blown including the 500-amp fuse, the power relay assembly shorted, and connectors damaged by heat; about $16,324 of high-voltage components were replaced under warranty. The dealer and Kia engineering could not determine the cause; the service advisor wrote on July 22, 2026: "We do not have a smoking gun as to what caused all of this… anything is all a guess." On Oct 17, 2026 I found the car completely dead again at the dealership, and it has continued to show electrical faults. After I retrieved the car on Oct 26, 2026, it developed further electrical faults, which I reported to the dealership in writing, including the mirror and remote start failing, false door-unlocked warnings while driving, and two occasions when the car stalled and then recovered. On Nov 2, 2026, the car displayed a charging fault and would not charge at all; the dealership's general manager advised me in writing to discontinue charging attempts until the vehicle is evaluated. The dealership has repeatedly declined to state that the vehicle is safe to drive. I am concerned the vehicle is unsafe and that the recall remedy has not corrected the defect.

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 Apr 21, 2026 · Electrical · PA

While driving Friday 4/17/26, I heard a pop and the car displayed a message to "Check electric vehicle system." The car seemed to still drive so I drive it home. That evening the car would not charge. I called Jim Shorkey Kia on 4/18/26, where I bought the car, to schedule the car to be looked at. They told me to bring it in on Monday and they will try to squeeze me in so they can diagnose the issue. Later that morning, I took that car out and made it about a block away before the car displayed a new message to "Stop vehicle and check power supply." At this point, the car went into a limp mode, barely moving. I was able to turn around and drive it home. Had I been on the highway, I might have been put in a dangerous situation. Now that the car has been diagnosed, the service department called and told me that the failed component was the ICCU. From what I've read, Kia claims that 1% of cars suffer from this issue. However, this percentage seems unlikely due to the number of online complaints. I wanted my experience to be an official documented case of this since I've heard that Kia has issued limited recalls in other countries and on older model Kia EV6's in the US.

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 Mar 16, 2026 · Electrical · VA

* Per paperwork from the car dealer, the ICCU failed along with a 3way valve assembly and a fuse blew. * While driving, the car went into a limp mode greatly limiting its maximum speed. * I was afraid to continue driving it and had the car towed to the KIA dealership. * It took exactly a month for it to be repaired. * The dealership kept the failed parts. * No warning lamps until the failure occurred. * When the failure happened a warning message stated "Check electric vehicle system!" and a battery symbol turned red. *Since it was taking what seemed like a long time for repair, I contacted Kia-Customer-Care and they assigned case number 25902713.

Filed Mar 11, 2026 · Electrical · MI

A warning came up on the dashboard to “Check electric vehicle system”. 12v battery light also on. Vehicle went into limp mode and drove at 45 mph max for a period of time, then dropped to 27 mph max. Inspections at Ziegler Kia in Holland, MI, found the ICCU was faulty and needs to be replaced. This vehicle has already had the ICCU recall applied, yet ICCU has failed again.

Filed Feb 13, 2026 · Electrical · CA

Started my car while I was out and heard a pop sound. Warning message appeared saying "check electrical vehicle system". I was able to drive but when getting onto the freeway, I started to lose acceleration and go into limp mode. I pulled over on the freeway and had to get car towed to dealership. Dealership service center confirmed that my ICCU part failed. The vehicle to my knowledge hasn't been viewed by anyone other than the dealership.

Filed Feb 12, 2026 · Electrical · MD

The Integrated Charging Control Unit (ICCU) and High Voltage Fuse failed twice within 100 miles, causing a total loss of motive power while driving. The first failure occurred on Jan 24, 2026 (13,954 miles), and the second on Feb 2, 2026 (approx. 14,000 miles), immediately after the first repair attempt. In both instances, the 12V charging system failed, severing connection to the high-voltage battery and forcing the vehicle into a "limp mode" with reduced speed and steering loss in active traffic, creating a severe collision risk. ​The first authorized manufacturer technician stated that the issue was with the 12v battery and not the ICCU, however the second dealership confirmed that the issue was the ICCU all along, resulting in 17 days out of service. Symptoms included a loud "pop" followed by "Check Electric Vehicle System," "Stop Vehicle and Check Power Supply," and 12V battery warnings. Despite Recall SC327/SC302 procedures, the safety defect persists.

Filed Feb 3, 2026 · Electrical · MN

ICCU failed while driving on freeway. Heard loud pop which dealership determined to be a blown fuse as a result of the ICCU failing. Car decelerated to 30-40 mph and stayed in this limp mode. Light on dash indicated an electrical system issue. Vehicle was towed to dealership and repair was made under warranty.

Filed Jan 28, 2026 · Electrical, Fuel system · NY

While driving my Kia EV6 in the middle of a snowstorm, the vehicle experienced a sudden and severe power failure. I heard a loud popping sound from the rear of the cabin, after which the vehicle immediately entered reduced-power (limp) mode. Within approximately one minute, the vehicle shut down entirely and lost all propulsion and mobility. I was able to move the vehicle to a safe location only because I was not in traffic or on the highway at the time of the failure. Had this occurred at highway speeds or in active traffic, it would likely have resulted in a dangerous situation with a high risk of collision, especially given the severe winter weather, low visibility, and slippery road conditions. The vehicle has approximately 21,000 miles. This is the second failure of the Integrated Charging Control Unit (ICCU) in this vehicle. The vehicle was inspected by an authorized Kia dealer, who has officially diagnosed the failure as a failed ICCU and associated fuse. There were no warning lights or messages prior to the failure. The first indication of a problem was the popping sound, immediately followed by limp mode and then a complete shutdown without further warning. The vehicle is available for inspection upon request. The repeat nature of this failure, lack of advance warning, and sudden loss of propulsion represent a serious safety defect.