What 131 owners told NHTSA about the 2023 Kia Ev6

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

NHTSA ODI 11721594

While charging my vehicle at a level 2 charging station, my vehicle ceased charging. I received no other warnings or symptoms prior to my vehicle ceasing to charge. Upon being alerted by the Kia Access app that the charging stopped, I went to check my vehicle and none of my doors would unlock in response to the buttons on my keys. I had to manually unlock my driver side door in order to enter my vehicle. I attempted to start my vehicle and unplug/re-plug in the charger, but my vehicle would not start or charge. Using a portable jump starter, I was able to jump start my vehicle and begin charging again. However, after approximately 5 minutes of charging, my vehicle stopped charging and once again would not start. At that point, I called for my vehicle to be towed to a Kia Service Center. The Kia Service Center was able to reproduce the problem of my vehicle not starting or charging and informed me that there was an internal short circuit caused by a bad Integrated Charging Control Unit (ICCU). The bad ICCU shorted my ICCU fuse, resulting in the draining of my 12-volt battery. The ICCU and fuse were replaced at no cost to me. Although my vehicle is available for inspection upon request, the parts that malfunctioned have been replaced with new, functioning parts. My safety or the safety of others were not at risk in this situation, but I was fortunate that my 12-volt battery died while parked and charging, not while I was driving, which could have caused an accident.

NHTSA ODI 11721162

While the vehicle was on the charger, the ICCU failed which then caused then fried my JuiceBox EV40 charger and flipped the dedicated circuit breaker. The car has since been repaired. I am concerned that this is a dangerous failure. If it happened on the road it potentially left me without propulsion. I'm also concerned that but for the circuit breaker functioning as designed it could have caused an electrical fire. My understanding is that this has been an ongoing problem with Kia and Hyundai EVs. I do not believe that Kia/Hyundai are taking responsibility for fixing the problem that have not plagued other manufacturers.

NHTSA ODI 11720624

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. The 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. I 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. I 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.” The 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. The ICCU failure also damaged my home ChargePoint charger, which required replacement under warranty.

NHTSA ODI 11720337

While driving the car we heard a loud pop in the cabin. That was followed by electrical warning lights on the dash. WE were only about a mile from home and did make it back safely at greatly reduced speed. The ICCU was confirmed to have failed by the dealership. The part was replaced. If we had been traveling on the highway it might have been difficult to find a safe place to exit the roadway.

NHTSA ODI 11720542

Pulling out of garage, car warned of limited speed and then within about 30 seconds completely shut down-- could not move, operate locks, etc. Car could not be started again and had to be towed away. 12v battery had been drained down to 4v due to failure of ICCU unit. Dealership replaced entire ICCU unit and fuse.

NHTSA ODI 11719960

The ICCU went out on the vehicle.

NHTSA ODI 11719527

ICCU failure

NHTSA ODI 11717524

While driving in the evening with an estimated 180 miles range remaining a "pop" noise was heard. About a minute later a vague warning message the car had not displayed before appeared. We tried to make it home but concerning (and still vague) messages kept appearing quite rapidly. The car slowed down and came to a halt and died in an intersection. This all happened within five minutes of hearing the "pop" noise. Once the vehicle died the head and taillights went off and the car would not allow the emergency flasher lights to be turned on. It would not allow it to be put into neutral to allow it to be moved out of the intersection. It also would not allow any of its doors to be locked (manually or otherwise) except for the driver's door until the vehicle was repaired one week later. We found out following that the 12 volt battery had not charged due to a DC/DC converter input voltage sensor fault related to ICCU failure. The popping noise had been a fuse. As the applicable ICCU parts were replaced by the dealership I doubt they will be available for inspection. The safety of my family was put at risk by: - the car's warnings not clearly explaining what the issue was. - the car not giving clear indication of how quickly it would die. - the car dying in a busy intersection. - the car being unable to be shifted to neutral. - the car's warning flashers not being operational when it died in the middle of the intersection at night. - us being left without warmth in outside temperatures around 6 degrees Fahrenheit. The ICCU problem was confirmed by the dealership we purchased the vehicle from. The vehicle was only inspected by the dealership acting on behalf of Kia.

NHTSA ODI 11716497

With no warning except a pop, the vehicle iccu will fail and leave you stranded, very dangerous if you are driving on the parkway

NHTSA ODI 11715439

ICCU blew along with the fuse

NHTSA ODI 11715319

The ICCU has failed twice in my EV6. It is a fairly common issue for this vehicle. I had the ICCU replaced after the first failure, but it has failed again. There was no indication something was wrong with the car until I heard a pop and then the dash indicated "Check Electrical System"

NHTSA ODI 11715335

Heating system fails to generate sufficient heat to defrost windshield or prevent ice buildup in the winter, also impacts the temperature of the cabin. No error codes are generated but it appears the PTC heater is not functioning as expected.

NHTSA ODI 11715058

10:00 am January 28th AFTER A DRIVE OF APPROXIMATELY 20 MILES TO THE GROCERY STORE, we parked the 2023 Kia EV6 Wind,in the parking area, then entered the store to shop. On returning, we placed the groceries in the trunk and proceeded to leave for home. The push button "START" provoked a notice on the dash that the 12 volt battery was "LOW". The drive circuits would not enable. Prior to going in the store the dash information reported the main battery was at 62%, all else is normal. We are now stuck 20 miles from home. We called KIA roadside assistance, via a cell phone. The Kia site told us it did not recognize the VIN number we had entered three separate times.. It would not proceed down the logic tree for us to be assisted by their service. We called :AAA"they sent a service truck with a jumper battery which allow us to get a small charge on the 12 volt system, enough to get us home. Immediately upon arriving I opened the hood, retrieved my "Fluke DVM" to measure battery voltage. 6.2 volts was the reading. The 12 volt battery was not charged by the voltage regulation system in our car. Fortunately, we were dressed well, being the temperature outdoors was 14*F at the time and we had access to the grocery store for safety. Yet still a major inconvenience due to breakdown. Later, I disconnected the negative battery terminal, then connected the 12 volt AGM battery charger I have purchased for home use. The battery was charged to full overnight to 13.2 volts. I removed the charger cables, then left the battery set for 12 hours disconnected from the vehicle. The voltage dropped to 12.6 volts dc, indicating a healthy battery. This morning January 29th, I called the Kia dealership to explain our problem, the scheduler has acknowledged a possible bad charge control unit, but told me if it was not a control unit problem, I would pay a fee of $135 dollars for the troubleshooting, even though the vehicle has approximately 33,000 miles. Schedule Feb 4th

NHTSA ODI 11714142

While changing lanes on a freeway, the car passed through a narrow strip of slush from recent snowfall. The car immediately disabled the motors, preventing acceleration and regenerative braking for nearly 50 seconds. There were no warning lights, sounds, or messages displayed on the car's gauge cluster display, either for the initial loss of propulsion or for the restoration of propulsion. This caused a loss of traction when the car eventually passed through a patch of packed snow and ice.

NHTSA ODI 11713938

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.

NHTSA ODI 11714011

ICCU failure. Was confirmed by shop car was towed to over phone. But no mention of it on invoice as of yet. I was at traffic light when I heard a pop and when I tried to go, got the warning message to pullover and the turtle icon. I made it to a towable spot. Super fortunate all in all. Can’t imagine if on highway in weather. No hints of failure before. Car was recently purchased month prior. I took it in for recall within first week, was told all good, software was updated. I kept between 20%-80% at all times, charged lvl2 at work daily and lvl1 at home sometimes. Had cheap voltage meter in car and was reading fine. Hope to get my car back soon.

NHTSA ODI 11714032

It seems as if the ICCU on my car failed. It will not charge and went into limp mode in order for me to drive it home a few blocks.

NHTSA ODI 11713663

A small amount of snow / ice is sufficient to prevent the windshield wipers from returning all the way to the original starting position low on the windshield. For some reason this prevents them from functioning entirely - they just get stuck in a loop trying to go all the way down. I am able to lift them up manually but they won't do so under wiper motor power / while driving. I have a video that clearly shows the failure mechanics that this system won't allow me to upload.

NHTSA ODI 11713447

The vehicle ICCU failed on 18 January 2026. It previously had the ICCU inspected and updated as part of #24V-867. Warnings on screen told me to stop driving and pull over. Had vehicle towed to Dealer where they confirmed ICCU failure and initially were going to charge nearly $4000 to repair. KIA Customer care spoke to dealership and ICCU repair is now being covered. It seems apparent that the earlier fix did not resolve the issue, and raises concerns over whether KIA truly understands the underlying cause. Will the replacement fail after 30k miles? Will I be stranded?

NHTSA ODI 11712811

Vehicle was normal and during the drive a warning light for "Check Electric Vehicle System" was shown, then a second warning light "Stop Vehicle and Check Power Supply" was shown, within 2 minutes the vehicle went into "turtle" or reduced speed mode and then finally the vehicle shut down completely. I was on city streets at the time and was able to park safely, but if this had happened on and interstate highway it would have been dangerous. This is a known issue with this vehicle as it ended up being an ICCU Assembly failure. There is also a safety recall for this, but Kia is not replacing the part and just doing a software update that is not fixing the root cause of the problem.

NHTSA ODI 11711811

While driving at normal speed, my Kia EV6 experienced a sudden and complete failure of the ICCU system with zero warning. The vehicle instantly lost all propulsion power and all 12V electrical power, rendering the car uncontrollable and unsafe. I was unable to accelerate, unable to place the vehicle in gear, and unable to activate hazard lights. This occurred despite the vehicle being at approximately 99% battery charge. This failure created an immediate and severe safety hazard, as the vehicle effectively became a dead object in traffic without warning to surrounding drivers. There was no prior alert, no dashboard warning, and no indication of impending failure. This defect is well-documented and pervasive across the Hyundai–Kia–Genesis E-GMP electric vehicle platform and has persisted despite multiple recalls spanning several model years. Kia has acknowledged the issue through recalls but does not have a reliable or permanent fix. Even newer model year vehicles that are claimed to address the issue have experienced the same failure. If this defect occurred in an internal combustion engine vehicle — for example, a random, complete engine shutdown or fuel system failure while driving — it is highly unlikely that regulators would permit the issue to persist across multiple model years without resolution. The fact that this is occurring in an electric vehicle should not lower the safety standard. A sudden total loss of propulsion and electrical power is equally dangerous regardless of drivetrain. Critically, there is no assurance that this failure will not recur, even after replacement of the ICCU or related components. Owners are effectively being returned vehicles that can lose all power again at any time, without warning. It is deeply concerning that this issue remains unresolved after multiple recalls and multiple model years. Continued operation of these vehicles without a verified, permanent fix places the public at ongoing risk.

NHTSA ODI 11711508

Without any warning the car dies on the interstate, it warns you once it fails. The ICCU fails. It left me stranded with my dog.

NHTSA ODI 11711542

Got a Check electrical system error, car reduced speed and 12v battery stopped charging. Car was towed to the dealership and they confirmed that the ICCU needed to be replaced.

NHTSA ODI 11709625

My Kia EV6’s ICCU failed while I was driving, leading the car to completely lose power while on a busy street.

NHTSA ODI 11708371