2023 KIA EV6 Electrical System Problems

The ICCU went out on the vehicle.

ICCU failure

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...

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

ICCU blew along with the fuse

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"

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.

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...

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...

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.

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.

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?

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...

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.

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.

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

While driving, heard a pop and a check electric vehicle system error popped up on the dash. Car was not drivable except for very low speeds shortly after (impacted safety of the drive) until it eventually stopped being able to turn on at all.

Car said there was a 12V low battery danger and said to pull over immediately while driving. After taking it to the dealership, they said my ICCU went out. So they had to replace it. I've read that the ICCU on these cars are notorious for failing and needing replacement.

ICCU FAILURE. Car would not drive

The ICCU that charges the 12V on board battery failed to keep the battery charged and it made my vehicle a paper weight. Had to have it towed to my local Kia dealership to wait 2 weeks for an appt. Hasn’t been repaired yet and I’m sure it won’t be a short wait after they schedule the repair

The vehicle experienced a total power failure resulting in complete inoperability (no start, no unlock, no electrical response). This is the second occurrence within approximately five weeks. The most recent incident occurred after the vehicle was fully charged and driven the day prior. There were no warning lights or messages before the failure. The vehicle was previously inspected by an authorized dealer and a manufacturer service campaign related to the charging/low-voltage system was performed, after which the problem recurred. This condition can strand the driver without warning and poses a safety concern.

First year of ownership rear engine needed to be replaced. The car literally stopped where I was on the road and had to be towed to dealer. It took a month to get the motor replaced. After that, my car stopped while I was leaving my house driving it out of my driveway. There were red warining lights and sounds and then it just suddenly died seconds later. It had to be towed to the dealer. They said it was fixed and that the 12v battery wasnt being charged. Then I was leaving church when my car died on me again. Same issue. Now, the third time in this vehicles 2 years of life, my car died while I was on the highway driving to work in the morning in the passing lane during rush hour. The dash went red and waring lights and sounds with a message get to...

My 2023 Kia EV6 experienced a sudden ICCU and 12-volt system failure while traveling approximately 50 mph. Without warning, the vehicle instantly lost propulsion and all electrical power. This included loss of steering assist, braking assist, hazard lights, shift capability (unable to shift into Park), and even the ability to lock the doors. The failure effectively “bricked” the vehicle in motion. I was only able to get the vehicle off the roadway because the road happened to slope downward into a nearby lot. Steering required significant physical effort, the brake pedal went completely hard (“dead”), and the vehicle offered no functional parking brake or Park engagement once stopped. Because I was on a hill, we had to allow the car to roll to the bottom until it met a curb to prevent movement. After power loss, the doors could not be locked at all. This type of unrecoverable electrical failure...

The vehicle can't be changed with a message "issue with electrical system". The message blinks very fast for 3sec and disappears. I have to turn on and off the car a few time to be able to read the message. The the car lost 12V secondary battery, it only shows 5.5V when measured. car is dead.. Replaced with new battery, car can start again but the car still can't be charged. Is it related to ICCU problem? KIA doesn't show any recall to this problem.

ICCU failure

On several occasions, when traveling over 55mph, once the battery hits a certain threshold (35% or 55% so far) the “power is limited” warning will appear on the dash and the vehicle will lose power. This has not occurred at lower speeds but only at higher speeds, and not every time. This vehicle was purchased so my husband could do his freeway commute, but it is on a remote highway where there is often no shoulder, so it especially dangerous to suddenly lose power with limited ability to safely pull over. On one such occasion, he drove the vehicle straight to Kia for inspection. They said the soonest available appointment was in 2 weeks and because they had no technicians available, they could not run the diagnostic that would allow us to get a rental car in the meantime. They suggested going to a different Kia dealership. We called ahead...

The contact owns a 2023 Kia EV6. The contact stated while attempting to unlock the driver's side door with the remote, the door failed to unlock. The contact manually unlocked the door with the key. In addition, while attempting to start the vehicle, the vehicle failed to start, with the message "12-Volt battery failure" displayed. The vehicle was towed to a local dealer; however, the vehicle was not diagnosed. The vehicle was not repaired. The contact referenced NHTSA Campaign Number: 24V200000 (ELECTRICAL SYSTEM); as a probable cause for failure. The manufacturer was notified of the failure. The approximate failure mileage was 30,000.

had 3 recalls on ICCU module, each time dealer said everything was OK. Last "repair" was in January. In April, car just "died" nothing worked, could not shift, no acceleration and limited braking, had to call a tow truck to move it as everything was locked up. dealer said ICCU shorted out, 3 week repair time, and this is down from 3 month repair time 2 weeks ago. The only warning we had was a dash message to check electrical system, meanwhile Kia app for car said everything was OK, no problems with any thing. dealer listed faults as, P1A9096 dc converter sensor fault, P1E3716 battery charger V2L low voltage, other low voltage comm codes as well but not listed

The ICCU in my Kia EV6 failed while driving. Thankfully I was not involved in a crash, but my speed was capped at 30 MPH, crawled back home, where the vehicle wouldn't start. I had to get it towed to the service center. All of this besides all recalls and software updates being addressed. There were multiple warning lights that went off during my drive: "Stop vehicle and check power supply" "Check electric vehicle system"

On April 6, 2025, while charging my car my Juicebox tripped a breaker. When I reset it the Juicebox was showing errors and was inoperable. I tried to use my backup charger (Blink) but it tripped a breaker and became inoperable too. I took the car a commercial charger (ChargePoint) and it would not charge the car. Kept getting a “charge interrupted” message. The first Kia dealer I went to did not have a Level 2 charger and could find nothing wrong and refused to help repair the car. The second Kia dealer had a Level 2 and confirmed it would not charge, but Kia would not authorize a warranty fix. That dealer suggested leaving the car for a few days and hope the car generates a fault that Kia will accept to authorize a fix. •What component or system failed or malfunctioned, and is it available for inspection upon...

I want to disclose this is the 2nd time this has happened. I was on the highway when the system failed. Immediately and drastically forced my car down to 25mph on [XXX] going to Philadelphia in the far left lane with no warning. I had to make it across 3 rows of traffic and ride on the shoulder of the highway until I could find a safe place. One ruining the sport tires on the car and probably messing up suspension since these cars are very sensitive and the highway does have those perforated shoulders. While cars zip past me I am having to figure out how to pull over with no force. None of the functions were working. It was traumatizing. Especially to do it again after 6 months ago the same thing happened. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Integrated Charge Control Unit (ICCU) failed. Charging error appeared on 30 March 2025. Next attempted to drive vehicle on 2 April 2025. Accessory battery suddenly dropped from 12V to 8V. Vehicle displayed "Stop Vehicle and Check Power Supply." Was able to crawl home in "Turtle mode" before tow to dealer. P1A90(96) [0x1A9096] among the Diagnostic Trouble Codes stored. Dealer confirmed ICCU failure and estimates at least one month to repair. SC302 was applied on 13 May 2024 at 5,732 miles. SC327 was applied on 2 Jan 2025 at 10,506 miles. 12V accessory battery is original (sealed lead acid).

On January 27th I was driving home on I-495 in the far left lane going about 70MPH when the electrical warning light came on. Telling me to stop the car and take to the dealership. While I was trying to get over into my far right lane, the car went from 70mph to 25 mph in about 40 seconds! Cars were flying all around me! It was terrifying and incredibly dangerous! The dealership discovered my ICCU had failed. This vehicle has a fatal flaw that is going to get someone killed.

I have received at least two recalls on the ICCU component on my Kia EV6, which were taken to the dealership for repair per the recall. On April 4, 2025, my vehicle displayed the "Check Electric Vehicle Systems" and "Stop vehicle and check power supply" alerts. It had to be towed to the dealership, as it cannot be driven. They called and stated it was related and the part is on back order for the unforeseen future.

ICCU failure. Car was dropped off with Kia and the (second) recall they claimed to have performed did not fix the 12-v battery charging system error. They ordered in a new part, which was on national backorder and they provided no ETA. I had to purchase a replacement vehicle after 30 days of them having the vehicle without making the repair, providing an update, or having given me a loaner. Received message it was fixed after 37 days, but no information whether it is with a new part. Subreddit for the EV6 shows this is a widespread issue that has not been permanently resolved. When the ICCU fails, you are limited to 25mph "limp mode" and will lose ability to move car if 12V battery dies.

While driving my car a warning flashed stating "check electrical vehicle system." Pulled over, contacted Kia of Abilene and asked if we could drive the car to the dealership. While on the phone another warning flashed ""Stop vehicle and check power supply." Attempted to drive car, "Limp mode or turtle mode" occurred and the max speed for the car was 25mph, sudden loss of acceleration. Made it home, which was approximately 2 miles away, and it seems like the 12V battery was draining quickly. Eventually the vehicle stalled at home and became unresponsive, no power. Contacted roadside assistance and the vehicle was towed to Kia of Abilene. All of this occurred March 29th at approximately noon. The dealership finally contacted us today, April 2nd, and notified us it was an ICCU failure and the part wasn't available with no foreseeable time-frame for repair. The car is absolutely inoperable!

ICCU failed at 30,200 miles disabling vehicle on street in front of my house. Date 1/27/2025. Towed to Dealet. Waited 8 wks for repair due to parts back order.

driving at around 35mph I heard a pop and a warning showed up on the dash stating "stop vehicle and check power supply". This warning put the car into limp mode as I was about to turn on to a busier road to get to my place of employment. The car was then towed, at the request of Kia, to the nearest dealership. It was diagnosed a few days later as having a faulty ICCU, or integrated charging control unit. There were no indications of the problem before the loud pop which I am assuming was a fuse blowing, and the car entering limp mode and showing warnings on the dash. This is a known issue by Kia as I have had my car in for multiple recalls regarding the ICCU.

2023 Kia EV6 GT Line model. ICCU failed around 25k miles despite having the required software update as per the initial recall.

I have had 3 incidents where the ev6 went out of power. The one recent incident is when the car suddenly started giving red alert on low power and suddenly slowing down even when I try to step on the pedal to accelerate. Please see my video and photos of these incidents. And all these times my main battery of ev6 was always having charge higher than 40%. I was driving on all 3 occasions, once on highway close to the exit where I had to pull over to curbside. The ev6 has hence lost my trust since these type of sudden power failures could lead to my life straight being on risk - the 12 volt battery has died two times after I purchased the car in feb 2023! Kia themselves do not know what issues exist in the car- the recalls have happened three times, as I type...

I was on my way to the highway when about one mile from home when without warning vehicle went into Limp Mode. Acceleration suddenly dropped to 25mph. It was very dangerous trying to drive uphill on a busy road at limited power to get back to my home. Thankfully I was not yet on the highway. Dealer said that both the ICCU and fuse that were inspected a month ago due to a recall and found to have no error codes in January now need to be replaced. Parts on back order with no ETA.

I purchased my 2023 Kia EV6 in December 28, 2024. On January 8, 2025, I took my EV6 in for the SC327 recall service. Despite completion of the recall service, my ICCU still failed and my car lost power while driving on February 6, 2025. I was driving 45 mph down a state road and was about to get into a highway onramp when my speed quickly dropped to 13 mph and my car displayed a "check electrical system" warning. The car would not go above 13 mph. I was fortunate that no one was following close behind me and that I was not on the highway. Had I been in front of a truck or other vehicle that couldn't stop quickly, the sudden deceleration could have been very dangerous. I was fortunate that I was near a parking lot that I could pull into to wait for a tow...

While driving, the vehicle screen showed an electrical warning on the screen. The car went into limp mode and dropped to 25 MPH. 5 minutes later, the screen showed a critical electrical issue and said I needed to pull over as soon as possible. It was towed to a dealership. They found the ICCU is faulty. Because so many EV6's have this problem, it is on national backorder, My concern this vehicle seems to be a safety hazard where it shuts itself down and strands its driver because of faulty parts.

12 volt battery failed to recharge

Rear seat 120 ac voltage outlet indicates an open ground when utilizing an outlet tester. I believe this risks a electrical shock injury to the user. The dealer service department states all is well since a device plugged in powers up. It seams that the dealer service department does not have the requisite knowledge in dealing with household voltages and is not equipped with the appropriate test equipment.

I was pulling into a mall parking lot. The vehicle started beeping and popped up a message on the dash saying "stop vehicle and check power supply". The vehicle slowed to maximum 25 miles per hour. The battery died completely the vehicle has no power at all and cannot be driven or even moved off the roadway - there is no way to even get it into neutral now. The dealership wont look at the vehicle for 2-3 weeks even though it is only 1 year old. I did pull off the road before all this happened but it was so sudden and happened so quickly that I was very aware of how dangerous this could have been had I not heeded that warning immediately.

My Kia EV6, AWD Wind has the exact problem described in this Ionic 5 video, [XXX] , which addresses your TSB 24-EV-003H. It appears my EV6 uses the same electric oil pump (EOP) as the Ionic 5, so I am not sure why the EV6 was not included in your TSB? The first 14 months I owned my car, I loved it, then in June after I started driving for 45 to 60 mins, the car ride started becoming rough or unsmooth. After researching it on the Internet and purchasing some diagnostic tools, I figured out, that when I start driving the car there is a demand signal for the EOP but the pump has no rpm, no torque and no DC current. Depending on driving conditions, it appears the rear motor stops propelling the car when it reaches 190 to 205 degrees and the front motor kicks in to...

The contact owns a 2023 Kia EV6. The contact stated that the controls for the heating and cooling system on the steering wheel were too close and were a distraction. The contact stated that sunlight made it difficult to check the controls. While checking the features, the contact veered off the road. The contact stated that his hands lightly touched the controls, and he was unable to determine if the features were activated for the heated seats or the steering wheel. The contact stated that the controls needed to be less sensitive. The seats and steering wheel became hot. There were no warning lights illuminated. The vehicle was taken to the local dealer but was not diagnosed or repaired. The dealer referred the contact to the manufacturer. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 4,000.

The contact owns a 2023 Kia Ev6. The contact stated while driving at an undisclosed speed, the vehicle became inoperable. The vehicle was towed to a local dealer where the battery was replaced. The contact stated that the failure persisted, and the battery had been replaced approximately four times. The local dealer was able to diagnose the vehicle and related the failure to NHTSA Campaign Number: 24V200000 (Electrical System); however, the part to do the recall repair was not yet available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was approximately 8,000. Parts distribution disconnect.

On [XXX], I went to charge the car at the Katy Mills location in Katy Texas. After fully charging the car, I went to visit my sister's house to visit. When I returned to the car it had completely shut down. I would not start and none of the electric components worked. I had to have the car towed to Westside Kia, who offered no assistance with a loaner car. I called three days later and was informed by Sabestian that the ICCU had blown out and the part is on National back order. There are three people in my home who are disabled and two young children who has to be driven to school. Upon further research about this ICCU unit, there is a total of 48,323 Affected Units and Kia Corporate has offered no assistance in buying this car back although it is still under the manufacturer warranty....