2022 KIA EV6 Power Train Problems

After owning this car for about 3 years now I had the ICCU blow out on me at 53k miles right before thanksgiving. This prevented my car from Level 1 / Level 2 charging and would no longer keep the 12v battery charged. this made the car drive at limited speed as the 12v would drain. I had previously taken the car to get the ICCU recall early in the year and obviously that "software fix" did prevent this from happening. How am I supposed to reliably drive this car unless KIA/Hyundai actually redesigns the ICCU? This is something that needs a permanent fix or at the least a lifetime warranty coverage.

Bought this car in 2022 and had no problems until 1/2/26. Car was charging at home and suddenly stopped. Got a check electrical system warning light. Took it to the dealer to get checked out and the ICCU needs to be replaced. Despite everything online saying that it is covered on the 10 year/100,000 EV warranty, they are denying that it is covered under warranty. They say it is covered by the basic 60,000 mile warranty which I am a whopping 8,000. There has been multiple recalls on the ICCU, all software because Kia can't be bothered fixing their bad designs. Getting rid of this junk car and never buying a Kia again as I will not trust my life and safety with such a horrible company that doesn't care one bit about it's customers.

While driving, the car all of a sudden lost power - forcing me to pull over. If this were to happen while on the freeway, a crash would have been imminent. This is a known issue with kia/Hyundai EV's where the ICCU fails and causes the vehicle to lose power suddenly.

My ICCU failed while I was driving and I lost power while in a light controlled intersection in Chicago. The screen turned off and I could not see my speedometer or any driving information. I luckily was able to roll to the side of the road and park the car. My car could not change gears, doors would not work, trying to jumpstart the 12V did not work.

The electrical system failed (dashboard warning light appeared while in park) and then a pop was heard (fuse bursting). Car could not safely drive. Dealer confirmed ICCU failed once checked at dealer. No prior warnings noticed and no issues charging with approved systems leading up to the failure.

In November 2024, my 2022 Kia EV6 became suddenly non-drivable due to electrical failure consistent with a repeat ICCU/12-volt system malfunction. The vehicle would not start or maintain normal electrical power and became stuck in accessory mode, creating a loss of propulsion and complete loss of transportation. This vehicle previously experienced an ICCU failure earlier in 2024 that required dealership repair and battery replacement. After that repair, the vehicle again developed electrical failure symptoms, including loss of 12-volt power and inability to operate. Due to the unsafe non-drivable condition, Kia Roadside Assistance directed and arranged a tow to a Kia dealership. Upon arrival at the dealership, new undercarriage and wheel-well damage was documented within approximately 90 minutes of drop-off. This damage was not present prior to towing and is located where tow equipment attaches. The vehicle remains in the possession of the dealership and is available for full inspection. The electrical failure created a safety risk because the vehicle became immobilized without warning and could not be safely operated. There was no advance notice or driver-caused event. The failure resulted in complete loss of vehicle function. The vehicle has been inspected by a Kia dealership, and I have been working through Kia corporate and roadside providers since the incident. The vehicle remains out of service with unresolved electrical issues and unresolved damage resulting from the manufacturer-directed tow.

My 2022 Kia EV6 developed a serious electrical/MCU malfunction on 10/19/2025 at approximately 64,300 miles. While driving, the vehicle began to stutter during acceleration, all driver-assistance and safety systems disabled (LKAS, collision avoidance, lane keeping), and the vehicle could not accelerate normally (topping out around ~60 mph when fully pressing the pedal). The Kia Connect app displayed fault codes MCU P0A4100 and LKAS C164286. The malfunction recurred immediately after a dealer visit on 10/20/2025. The vehicle has since been inspected by Huffines Kia in Corinth, Texas, but no confirmed diagnosis has been provided, nor have they notified me of dropping/reconnecting the HV battery. On 11/18/2025, a new fault code appeared: MCU P0C1700. This failure affects the high-voltage electronics/MCU and causes sudden loss of acceleration capability and complete disabling of active safety systems while the vehicle is in motion, placing me and other drivers at risk. The issue is reproducible, continues to occur, and the vehicle remains at the dealership. I am requesting NHTSA review of this electrical/MCU malfunction as a safety-related defect.

Car stopped functioning while driving, stopped completely in the middle of the road, a warning "Check electric vehicle system" showed up on screen.

ICCU FAILED. Warning that I needed to stop driving the car This happened while driving on an interstate highway. Car would move at 25mph max.

While driving a warning about battery and electrical sysytem failure. Vehicle would not drive more thsn 10mph. I was able to limp home about 1 mile away where the car died. Could not restart with a jumper battery.

ICCU failure, no time line for replacement Car at dealer for over a month

The ICCU failed causing the vehicle to shut down in the middle of the road with no warning at all. Shutting down in the middle of the road with no warning is a major safety issue. Kia is aware of this fault with the EV6 and all other EGMP platform vehicles, and has made no effort to fix the issue. They just replace the faulty ICCU with another faulty ICCU and hope it doesn't fail before the warranty runs out. They are putting lives at risk, and all EGMP vehicles are unfit for purpose. Kia has the vehicle, has confirmed they will "repair" it under warranty. There is no timeframe for the "repair" and the repair doesn't fix the issue, it just puts the vehicle back on the road in the same unsafe condition in which it is likely to shut down in the middle of the road again.

I was leaving a parking space when I heard a pop in the right rear of the vehicle. I merged in to traffic and drove stop and go for about three blocks when a warnning message appeared on the dash saying that there was an electrical issue. I've been following this issue on various model specific forums so I was sure what had happened and knew that I had to get off the road quickly. I was able to find an open parking lot and immediately called for KIA roadside assistance. By the time the tow truck arrived all electrical systems were dead. It was towed to the dealer and the next day I was informed that diagnostics determined that the vehicle had a failed ICCU (Integrated Charge Control Unit). This vehicle has had the recalls that addressed this issue with software updates.

My wife was driving my vehicle and it alerted her that she needed to pull over while driving. She managed to get out of traffic but was stranded on the side of the road while waiting for a tow truck. I completed the recall SC327 and it was performed but still had an ICCU failure. Dealer has not repaired it and is waiting on a part but they say it is on back order and has not given me a timeline for repair.

My EV6 lost power while driving on a busy street. It went into 'Turtle Mode' which allowed me to pull off onto a side road and then all power to the car went out and the car stopped on the side road. I was honked at a couple of times while trying to get off the busy street. The tow truck driver put a power pack on the car and shifted it into neutral and was able to move the car. The dealer diagnosed this as an ICCU failure. The part required is on national backorder with no delivery specified.

On April 13, 2024, when I started my vehicle, the instrument cluster immediately flashed the following warning msg surrounded by a flashing red circle: 12V Battery Very Low Stop Safely I turned the vehicle off, waited a few seconds and when I started it again the message did not appear. I contacted KIA USA and received a Recall Inquiry Case #. On April 18th, when I started my vehicle the same 12V Battery Very Low, Stop Safely msg displayed. It did not disappear upon restarting. Within 5 mts ALL the electrics were dead, including the instrument cluster AND the parking/emergency brake control AND the Vehicle Start On/Off button. I am very fortunate I was not driving on the highway when this occurred. Ditto for other drivers. My vehicle had to be towed to my dealer/service center. The tow service jumped the 12V battery and was able to drive it up on the flatbed. Today (April 23rd), my dealer/service center representive informed by the 12V battery tested okay, and the vehicle diagnostics they ran have not revealed any issues with the vehicle electrical system. They have been unable to reproduce or confirm the problem so far. My vehicle is still at my dealer/service center. What occurred is identical to the issues identified in the NHTSA Recall No: 24V-200 & KIA Recall No: SC302.

After starting the vehicle and beginning to back out of a parking space, a loud pop was heard from the rear of the vehicle. Immediately, a "Check vehicle electrical system warning" appeared on the dashboard, followed by "Stop vehicle and check power supply". While attempting to drive to a safe location, a continuous warning began to sound along with a dashboard warning to stop immediately. The speed of the vehicle was limited which could have caused an accident when driving on public roads. The vehicle was towed to the dealership where it is waiting for diagnosis. During the tow, the vehicle was unable to move under its own power. The symptoms appear to represent a failure of Integrated Charging Control Unit (ICCU) (NHTSA Campaign Number: 24V200000). There were no warning lamps, messages or other symptoms of the problem prior to the failure.

While driving my car on March 7th, 2024 around 2:30pm an error message popped up "Stop vehicle and check power supply" and speed of the car was noticeably limited. Thankfully I was able to pull to side of the road and called road side assistance as car was undrivable, the 12 volt battery was completely dead. When tow truck arrived, a jump park was required to put car into neutral in order to get onto tow truck. If this happened in a freeway this could be a risk if we are not able to stop at a safe location. Towing services was able to tow my car to the dealership about 15 minutes away, upon unloading vehicle onto lot, taking an Uber home as no loaners are available, asked the next day about getting car into diagnosis and was told that it would take 2 weeks to get in to be looked at, and now it sits until they are able to diagnose a known problem, even the sales manager at this dealership has had same issue on 3 different EV6's. He assured me they know what to look for when it comes to the issue. After doing some research this issue, it is a well known issue with Hyundai/Kia cars and it looks like the ICCU module needs to be replaced. And Hyundai/Kia EVs and was supposedly addressed in a recall done in late September of last year, yet I have gone back and made a complaint with Kia regarding this issue, but in their eyes it was fixed in the recall. This new issue now goes under same case number associated with the charging interrupted error, where charging stops after 10 mins, took to dealership had the update done and still same issue. Continued to have problems charging on level 2 charger, even at a lowered amps. Lowering the amount that is recommended by the manufacturer and still having the same issue. Thank You.

When driving at 35 mph on level ground, a loud "pop" was heard and the vehicle immediately lost power and warning messages having to do with the 12V system appeared on the instrument panel warning that the car needed to be pulled over in a safe spot and turned off. The vehicle was transported to a local KIA dealer via flatbed and has now been at the dealer for more than 30 day. So far, the 12V battery, the ICCU, the inverter and ICCU fuse have been replaced.

The car suddenly lost power and stalled to a max speed of 22mph. The car showed a check electrical system please stop vehicle. This is a known issue with the NHTSA. The car was towed to the nearest Kia dealer - Airport Kia in Naples FL.

The vehicle completely lost power while driving. My wife came down a dirt road hill, made a left onto [XXX] in Duxbury, VT, heard a "clunk" from below the car, and experienced total power loss. An error flashed on the screen that read "Critical Battery System" and then, soon after, "Stop Car Immediately." She was able to coast 1/4 mile (downhill) to a school parking lot. The car was towed to a dealership where the dealer replaced the inverter (ICCU) and the paperwork stated "DC/DC Converter input voltage sensor fault." The car had 25,896 miles on it when the incident occurred. The total power loss was extremely dangerous, and we were lucky it did not occur on a highway at a higher speed with more cars in proximity. I see online that NHSTA had previous reports of this issue both with the EV6 and the Hyundai Ioniq. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On SEPT.8, 2023 The car was charging and then it stopped charging. There was no warning or indications. All power failed and the EV is now inoperable.

On 5 May 2023 our 2022 Kia EV6 WIND AWD Automatic vehicle (~11,200 miles on the odometer) was being driven under normal conditions at approximately 30 mph in city traffic when the car lost motive power and a dashboard alerts appeared stating "stop vehicle and check power supply" and "check electrical vehicle system." The driver complied but the shutdown occurred on a heavily trafficked road and put the driver and other travelers at risk and caused the driver considerable distress. The incident was reported to the dealer and manufacturer via the Kia Access app, and the car was towed to the nearest Kia dealer and service center on May 8. The dealer diagnosed the problem as caused by a defective ICCU (a part of the electrical powertrain control system) requiring replacement. As of 12 July 2023, Kia has not provided a replacement part and it remains on backorder with no ETA for arrival. We have not been contacted by Kia and to our knowledge no one has inspected the vehicle other than the dealer service technicians.

The contact owns a 2022 Kia EV6. The contact stated that while the vehicle was parked on a hill, it rolled and crashed into a handicapped sign. The forward collision sensor became inoperable. While at the charging station utilizing the radio, the battery and collision warning indicator lights were illuminated. The vehicle was taken to the local dealer where they were unable to identify the failure. The vehicle was not diagnosed or repaired. The manufacturer was contacted but provided no additional assistance. While driving, an unknown vehicle crashed into the rear of the vehicle and a quarter panel. There was no reported injuries, fire, or police report. The vehicle was taken to another dealer (Kia of Irvine 45 Oldfield, Irvine, CA 92618,) where the vehicle failed to start and it was diagnosed that the battery needed to be replaced. The battery was replaced but the failure persisted. The vehicle was not repaired. The approximate failure mileage was 3,000.

Mileage: 3,000