2024 KIA EV6 Electrical System Problems

The vehicle had an electric supply failure, suggesting a failed ICCU. This left me stranded and requiring a tow. The issue is not uncommon in this vehicle but there is no recall. Kia and Hyundai need to get this right rather than keep repairing these when they adhoc fail.

Vehicle Information: 2024 Kia EV6 (VIN: [XXX] ) Mileage at time of failure: 14,005 Complaint Description: My 2024 Kia EV6 experienced a complete failure of the 12-volt battery system despite the high-voltage traction battery showing approximately 80% state of charge. The vehicle became completely inoperable without warning. The 12-volt battery was fully discharged and the vehicle would not enter READY mode. The vehicle required a jump start to become operational. After being jump started, the 12-volt system did not appear to charge properly, suggesting a failure of the Integrated Charging Control Unit (ICCU), which is responsible for converting high-voltage battery power to maintain the 12-volt battery. This failure created a significant safety concern because: The vehicle became completely disabled without warning. This failure occurred while driving in heavy traffic, it created a hazardous situation. The vehicle’s electrical systems, including safety systems, depend on the 12-volt battery. There are known reports...

The ICCU failed while I was driving my car on a 50 mph road. Check electrical system warning lights appeared. Maximum speed was reduced to 19mph and my car became a road hazard for other cars on the road. I managed to pull off the road once I found a safe spot. After visiting the Kia dealership, the problem was confirmed as a failed ICCU (Integrated Charging and Control Unit) and replaced under warranty. No problems appeared prior to the failure. Vehicle was required to be towed to the repair facility.

ICCU FAILURE. COMMON ISSUE REPORTED WITH EV6s 2022-2025.

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...

2024 EV6 GT-Line with 13,165 miles suddenly showed multiple faults, including "Check electric vehicle system” followed shortly by "Stop vehicle and check power supply". The vehicle almost immediately stopped in the roadway, and my wife (driver) was unable to move the vehicle or even put the vehicle in neutral so the vehicle could be moved. The car is at a Kia dealership for repair who confirmed an ICCU failure. This is an exceptionally dangerous situation.

While operating my 2024 Kia EV6, the vehicle began displaying repeated warnings related to the power system and 12-volt battery. The instrument cluster first showed a “Power limited” message, followed shortly by a “Stop vehicle and check power supply” warning. At the same time, the vehicle indicated that the 12-volt battery was low, despite the high-voltage traction battery being at or near full charge. Shortly thereafter, the 12-volt battery became fully depleted, resulting in a complete loss of low-voltage electrical power. I was unable to electronically unlock the doors, and the vehicle could not be started or shifted into gear. The vehicle became immobilized and inoperable, requiring towing. This failure occurred without warning and created a safety concern, as loss of power could potentially occur while driving or leave occupants stranded and unable to access the vehicle. The vehicle had previously been serviced at a Kia dealership for known power...

ICCU failure

on April 7, 2025, our 2024 Kia EV6 was towed away from our driveway after an ICCU failure the day before. The tow truck driver attempted to jumpstart it with a battery eliminator and he could not. He could not get it shifted into neutral and had to pull it up on the ramp with the back tires stationary, sliding up the ramp. They had it until we got it back just before April 22, and then on that day, it was towed away again because of a 12 V battery failure. If this first computer failure had happened while we were on the highway, we would have lost power in traffic. We were told that the replacement ICCU part which we received was a different model number than the first one, but I have heard on Facebook discussion groups that it is identical and just as likely to have...

The car his a module called the iccu that regulates the high voltage battery, battery range goes down, the iccu has been replaced with the vehicle only having 8k miles on the odometer

Driving with my wife and [XXX] child, there was a pop sound from under the car, and the car suddenly showed multiple faults, including "Check electric vehicle system”, which cleared on their own. I parked and turned the car off and on again and the faults reappeared. I started driving home, and during the drive it showed "Stop vehicle and check power supply" and audibly alarmed. As I was only half a mile from my house on local quiet roads, I made it. A few minutes later, I tried to turn on the car and some displays were off, there was no drive power, the steering wheel did not turn, the door locks were flakey, and I wasn't able to tell if I had shifted into Park or if the parking brake was engaged. When the tow truck arrived, the car was completely unresponsive and there was no way to...

Vehicle ICCU blew up while driving, causing drive train system shut down and limited speed to 10 mph.

About 10 miles from home a warning saying to check the electrical system came on the dash and the car would not go faster than about 25 miles per hour. We had to limp back home, turning the car off every few miles as it would start aggressively beeping to turn off the car. After getting it towed to the dealership, it took them several weeks to determine it was the ICCU and fuse, and I did not take possession of my car back for nearly 8 weeks. While this was under warranty, I am still currently waiting for reimbursement on the tow to the dealer and the rental I had to get for 3 days before the dealer could get me a loaner.

Whike driving down the street, the car lost power despite being charged to 95%. An alert went off on screen stating an electric system issue and then stopped in the middle of the road. Between the warning showing up, and car losing full power was less than a minute. There was no opportunity to pull over safely and the car was stuck in the middle of the street until a tow truck was able to come. Police had to direct traffic as it was blocking the only lane on a busy street.

The engine/power of my electric EV6 died. It went into limp home mode (speed limited) briefly before dying completely. I restarted it and was able to get it to a parking spot before it died again, but I was just lucky I was on a surface street with parking. Dealership confirmed it was an ICCU failure

ICCU failure while driving. Vehicle defaulted into limp-home mode and required towing to a dealership once it fully died. The issue was confirmed to be the ICCU and the part was replaced.

Car suddenly slowed from 55 mph to 25 mph because of issues with the 12v battery and the ICCU system. The car is only 1 year old. From looking online, this seems to be a fairly common issue/problem. The dealer is working on it now, but it seems likely that this issue will happen again. If it happens on a freeway, certainly a safety concern.

Heard a pop, followed by power failure and warning lights to stop operating the vehicle. The ICCU unit had blown.

Kia has a known ICCU issue with several of their electric vehicles. Mine went out yesterday creating an extremely dangerous situation on the road. After it blew, I lost the ability to accelerate or steer. This was obviously very scary for me and the drivers around me. I feel very lucky to have not been hit by another car. Although Kia is replacing these, this does not guarantee a fix. That is to say, the ICCU has the potential to blow again after replaced because the core issue is not something that Kia group has reengineered. I should not have to fear getting into my vehicle and wonder if it will blow again. I hope the government steps in and conducts an investigation into this. It’s only a matter of time before someone, unfortunately, will lose a life over this.

ICCU failed. Heard a popping sound from rear of passenger compartment, dash errors lit up, car went to limp mode

Multiple times the 12V battery has died without warning. Once in driveway while engine was charged to 93%, once while parked at work parking lot at charging station. Both times the car had to be jumped by AAA and driven to the dealership where it sat for 7 days each time with NO diagnosis, no loaner, no rental, and no transport. Finally after the second time, the dealership replaced the 12V battery but still did not give any diagnosis whether this was the ICCU or not. I have complained to KIA Motor Corporation who have advanced my complaint however they have eventually dismissed my complaint. They cannot answer me whether they believe this car is safe. They cannot stand by the safety of this car. They have not acknowledged that this is a safety problem and that other motorists have had similar battery failures while driving on the highway and...

[XXX] about [XXX] our 2024 Kia EV6 WIND RWD AUTO VIN: [XXX] already serviced in both NHTSA Campaign #: 24V867000 and Campaign #: 24V200000 had a sudden loss of drive power and nearly all control while driving in rush hour traffic at 65MPH on [XXX] between Atwater and Livingston. The confirmed failed ICCU component can be inspected at Modesto Ca Kia. The sudden loss of drive power and control in rush hour highway traffic put me and numerus other rush hour highway drivers at catastrophic risk of multiple crashes, this could happen to anyone with the same car and especially concerning because our car had ALREADY been serviced in the 2 previous NHTSA recalls (see above) for the very issue (ICCU) that impacted our car nearly resulting in a catastrophic outcome. The confirmed failed ICCU component has only been inspected, and confirmed failed by the KIA EV certified technician at...

I was driving and got an error that there was a problem with the electrical system. It then gave me a n error of "Stop vehicle and check power supply". It's an electrical vehicle and I am not able to charge it now.

I see there is a lot of battery issues with KIA EV6 out lately; my car randomly died near my house and nothing was working, doors wouldn't open/close, hazard light wouldn't come on.. had the car towed to the dealership same day. they claim that they fixed my car properly and fixed the recall issue with the battery.. drove the car back home the same night. next morning; car is again dead and nothing is working; I feel very unsafe driving this car and i see online hundreds of kia EV 6 is having same issues. I don't think Kia is properly addressing this issue or the technicians know how to properly fix this.

ICCU and fuse failed while I was driving in the snow. Heard a thunk in the rear and Check electrical system came on screen. I had power to be able to drive the car home a few miles. SC327 recall software fix had been applied already over a month before this, but during that recall I was not advised to replace the ICCU. It failed right after putting the car into Snow mode. Was driving 20mph, auto regen braking on. Stop vehicle and check power supply message came on. Original 12v battery still on the car, never had issues with that. Most charging done at 9.6 kW level 2. Dealership reproduced the problem and has now replaced the ICCU and fuse.

I was coming home from work on 1/13/2025 and got an alert. a red circle saying pull over and check the electrical system. when i pulled over the best i could the car went dark. i called Kia for road assistance and they dispatched a tow to the dealer. the next day the dealer called and told me the ICCU needs to be changed and arranged a loaner car for me. The Dealer has been very helpful throughout this ordeal thus far.

Description of Incident: 1. What component or system failed or malfunctioned, and is it available for inspection upon request? The high-voltage battery system and charging system in my 2024 Kia EV6 malfunctioned. Despite showing 40 miles of range remaining, the battery suddenly dropped to 5 miles before the car became completely unresponsive and failed to charge. Additionally, the vehicle could not be shifted into neutral or powered on. The vehicle is available for inspection upon request. 2. How was your safety or the safety of others put at risk? The sudden loss of battery range left me stranded at a Shell Recharge station in Elkridge, MD, at [XXX] on[XXX]. Being stranded at this hour posed a personal safety risk, especially in an unfamiliar area, as I was unable to move the vehicle. Moreover, the malfunction could endanger drivers if such a failure occurred while driving. 3. Has the problem been...

I've had to have my rental car jumped 3 times now, the check engine light has been on since I rented it, had to be reset and is now back on. I believe it's the 12v battery, it pops up warnings of battery discharge almost daily. All 3 times it was shut off and when I went to start it, it wouldn't turn on, 3 seperate people have jumped it for me now in 3 different locations, the last one being while I was working and had to end the delivery because my car would not start so I am now unable to work as they have paused my deliveries until my account is reviewed. I am putting the first date I noticed the check engine light, which was the day I rented the vehicle. The not starting has happened on the following dates: [XXX], [XXX] and today [XXX]. I...

I leased a 2024 Kia EV6 on 1/27/24. On 2/22/24, twenty-six days after leasing the vehicle and an odometer reading of 616 miles, while on Washington state highway 903 there was a pop sound, the car slowed, and stopped displaying a “Check electric vehicle system” error. Due to the pop sound, we pulled over and barely made it off to the side of the highway before losing forward momentum. If this happened on a crowded freeway, the vehicle could have been disabled in a traffic lane. After 39 days, the dealer's service department found that inverter was "burnt and charred showing evidence of a fire in the system" and that the fire "potentially damaged the rear drive unit".

There are alot of electrical malfunctions including unnecessary and without warning emergency breaking that has injured me ( I temporarily have a rental car to recover from a right thoracic sprain, left hip contusion, and a right anterior chest contusion- I have medical documentation), the steering wheel jerking when no correction needed, the vehicle locking up on the tow truck driver, and a lot of different electrical malfunctions that seem to indicate a bigger problem. I have more evidence, but it would not let me submit more pictures.

8 days after purchase from dealer, new vehicle, it went into "zombie" mode. Electrical system for radio, climate, lights, etc. all worked but it wouldn't come out of park or neutral. The online app kept saying there were no mechanical problems even though it was "dead in the water" and couldn't be moved. Then the electronic parking brake engaged so it could not be towed. It had less than 400 miles, had been working fine in the prior 7 days. Stopped at Home Depot, when I came out it entered zombie mode, and it couldn't be moved or put into gear. Even though it was in neutral at times the electronic parking brake kept it from moving. I was told today it was a "front inverter" and Kia had to approve repairing it????