What 50 owners told NHTSA about the 2025 Kia Ev6

Driving on three lane highway at 60 mph the car abruptly lost power. Was able to get off the highway. Called Kia roadside assistance. Tow truck picked up car and delivered it to Kia dealership. Service dept diagnosed and is replacing the ICCU.

NHTSA ODI 11746106

While charging at a L3 station, charging was interrupted with a pop (which turned out to be ablown fuse). Two warning lights appeared on the dashboard (battery and vehicle with exclamation points) as well as message to "Check electrical vehicle system". Kia Connect told me to exit the vehicle and that it would need to be towed to the dealer. Dealer Service Office confirmed it was not safe to be in the vehicle nor to drive it. Car had only 2311 miles at the time! From the dealer invoice the KDS was inoperative at the time. Fault codes: P1A961C LDS Internal Power Supply out of Range and P1A9096 LDC Input Voltage Sensor Component Internal Failure Confirmed 12V battery no charging in ready on. Live data does not match given good values. LDC input voltage ~2V, LDC Output voltage 11.4C Dealer replaced ICCU and ICCU HV Fuse. Filled and bled cooling system. Verified vehicle charges on L2 charger. (Note I had been charging on an L3; this has not been verified.) I was told the ICCU ASSY had a new part number and was coming from a different factory. This part had a cost of nearly $5000 but was covered under warranty. HV fuse also replaced under warranty.

NHTSA ODI 11743612

While driving car began to decelerate and the dash lit up with a number of ABS/Brake system failure symbols. I was on the highway traveling at abt 70 mph when the issue happened. Got car to coast off hwy onto an upward sloping exit. Stopped at a light. Turned off and back on and was able to gain minor speed got approx three blocks to a gas station. Pulled off and tried restarts. The screen stated there was an update pending, but it could not complete it because the Electronic Brake System failed. I tried triggering a brake reset but it didn’t work. Car was towed back to Dealership. Two days later the Dealership mechanic confirmed the issue was a failed Electronic Brake which must be replaced. Car has now been with Dealer for 10 days. Dealer stated the EBS was on back order and they do not have a timeline for the parts to come in. They’ve provided me a rental from their fleet which they are covering in full. Hoping this is resolved soon.

NHTSA ODI 11739429

As I was driving, there was a loud pop that came from the rear of the car. The vehicle immediately flashed a warning to “check electrical systems”. I pulled over as quickly as possible but was faced with reduced acceleration. I ended up stuck in a parking lot awaiting a tow truck for over an hour with my dog and my wife in the car headed to a surgery appointment. The dealership has not confirmed anything but from research it seems to be a known issue that Kia has not addressed.

NHTSA ODI 11735536

ICCU failure at 900 miles

NHTSA ODI 11734122

Loud pop and Check Electrical System Message - limited ability to drive due to ICCU no longer charging 12V battery. Car no longer able to drive.

NHTSA ODI 11733894

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.

NHTSA ODI 11732744

I START VEHICLE AND TRY TO PUT TRANSMISSION TO DRIVE ITS NOT WORKING AFTER I TRY TO PUT VEHICLE TO REVERSE TRANSMISSION ITS NOT WORKING

NHTSA ODI 11731966

ICCU and fuse failure when it was being moved out from the garage. Got a “Check electrical system” notification when I turned it on following a level 2 charge the night before. It was with the dealer for exactly one month before I was able to pick it back up.

NHTSA ODI 11730587

While driving on a sunny day on a 35mph road, my dashboard reported “Check Electrical Vehicle System”. A red battery symbol appeared and my cruise control disengaged with a message “requirements not met”. When I got home I read my 12 volt battery monitor that reported the battery was 11.99v and only had a 60% state of charge. Just prior to this short drive from home, my battery was 12.77v and had a 100% state of charge. I put in my ODB reader and it provided two error codes: P1A9096 and P1A961C. The first error code is the result of an ICCU failure in its DC to DC circuit (the one that charges the 12V battery from traction battery). Using a battery charger, I was able to fully recharge the 12volt battery. My monitor says that it’s healthy with 100% state of charge. Turning the car back on resulted in a rapid drain of the battery from 100% to 93% in just five minutes while parked. The electrical system failure warning lights are still lit. I’m having my car towed for repair. If this failure had occurred more than 10 minutes from my home, I would’ve been stranded.

NHTSA ODI 11729835

ICCU replaced after 5 months of purchasing new and less that 7,000 miles.

NHTSA ODI 11729999

ICCU failure.

NHTSA ODI 11728945

ICCU failure. Car lost power while driving. I heard a "pop" sound and then the car displayed a warning light moments before losing power. Car was towed to the dealership where they diagnosed and replaced the ICCU and a fuse. This is a known problem since the 2022 model year and seems to be a very common failure that the manufacturer is unable definitively repair. Thankfully I was on a local street and not on a highspeed highway when this occurred.

NHTSA ODI 11725397

The ICCU unit failed and the car first slowed and then stopped. I was able to pull off the road at an intersection. A tow truck had to jump charge the battery to allow the car to be shifted into neutral in order to pull it onto the tow truck.

NHTSA ODI 11725105

Car has an NACS charger port, and is advertised by KIA as compatible with Tesla Superchargers and home chargers. The car will not charge at a supercharger nor at home using a Tesla charge cord that works with a Tesla Model 3.

NHTSA ODI 11723130

ICCU failure within three (3) days of buying vehicle. Only 300 miles on it. Failed to charge with known working Level 1 charger on day 1, successfully charged with Level 3 charger on day 2, and then failed to charge at same Level 3 charger on day 3. Simply connecting the Level 3 charger on day 3 had the car emitting "charger errors", and then followed that up with an "On board charger" fault. Vehicle no longer charges. Returned to dealer for repair.

NHTSA ODI 11723157

When shifting from reverse to drive there was a loud pop towards the back up the car. A check electrical system warning popped up, and then eventually a Check Power Supply stop now warning came up. The vehicle would not go above 26MPH and had to be stopped in a parking lot to be towed to the dealership. The ICCU went out and needed to be replaced, was at the dealership for 2 weeks for replacement.

NHTSA ODI 11722278

The ICCU unit failed. Limited speed and no charging capabilities. The Dealer has been informed and an appointment has been made 3 weeks out as they are too busy. The ICCU has not been inspected yet. No warning lamps or messages appeared before the problem started. After a loud POP or bang in the rear of the car 1 warning light appeared and 1 message. (See Attached) POP happened at 16:15 hrs on the attached graph.

NHTSA ODI 11720446

ICCU failure

NHTSA ODI 11720052

initially filed XXX (1/2/2026) 2nd (additional info) filed XXX (2/10/2026 3rd (3 page service report) XXX (2/11/2026) Vehicle is registered to Christopher Rojik, however it is my car that I drive, etc. today I am filing this for you folks that since I filed the complaint with Kia Corp. and sent them the service report, etc. Today, 2/19/2026 I received a formal Settlement Agreement and General Release to sign and accept. I am not signing it, as well as it fully releases Kia from any future issues, etc. outside of the warranty and whatever other details it claims. This will or should be the last for me to file. I had no idea they send me this kind of offer. As it is listed specifically as a "GOODWILL GESTURE" and they are not accepting fault or something like that. I attached inidividual pages, hopefully I can upload them as pdfs, we will see. If not I'll take quick pics and attach. thanks INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11719182

I was reversing my car in the parking lot and I heard a pop. Immediately I had a check electrical system warning. Preceding this the car was doing things which may have implied issues with the 12 V battery. Occasionally walking up to the car would not automatically open the car. Or other times, touching the driver handle did not unlock the car. The car is now at the dealership. They have confirmed failure of the HV fuse, ICCU failure, which also blew the 12 v battery. They have ordered the parts but it is currently on back order. The car could drive but after looking up this issue if the 12 v battery had drained it would have been inoperable.

NHTSA ODI 11718282

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.

NHTSA ODI 11717936

I charged overnight at work. When leaving I heard a loud pop and the check EV system light came one. The vehicle would no longer drive over 40mph. I made it a mile and it dropped to 20mph. The dealership has had my car for over a week. From research it seems to be the ICCU as many others have had problems with.

NHTSA ODI 11717172

initial filed #11708370 (1/2/2026) 2nd filed #11717025 (2/10/26) Yesterday afternoon (2/10/26), I was told by Jim Shorkey Kia Wexford PA that no error codes are on the EV6, it is ready for pick up. Before I received this call, there was a software update done on the EV6 (see service records) I attached 2 photos of the software update as well. ICCU ASSY was replaced, etc. was told per Shorkey Kia since there are no issues with my EV6, as of Friday when they initially called to say my vehicle was ready for pick up, Kia considers my problem resolved. I know I’ll be paying for the car rental for X number of days, even though the EV6 did not get the software update until this past Tuesday, yesterday 2/10/26, which cleared the 3 codes that were still showing on the Kia app earlier morning yesterday, screenshot of that attached as well. I have my car, no codes visible now.

NHTSA ODI 11717182

prior case 11708370 filed 1/2/2026 spoke with [XXX] 1/22/2026. Friday 2/6/2026 Shorkey Kia Wexford calls and tells me my EV6 is fixed I can pick it up. I go into the Kia App and still have the same 3 codes as before; P056216 VCU, C160404 FR_Radar, and C28B186 ADAS_DRV. I tell them later that day when I had time to open the app to make sure the codes were corrected, called them back and said until these codes are cleared, my vehicle is not fixed. Tuesday 2/10/2026 I get a called from same person at Shorkey Kia in Wexford, telling me my vehicle is fixed, I can pick up my vehicle, same person her name is Maggie. I told Maggie to hold while I bring up the Kia app, I still see the same 3 codes: P056216, C160404, C28B186. I told her the codes are still active, and as long as these codes are present, the car isn’t fixed. She wouldn’t tell me what was done to the car, so I don’t know if the ICCU was replaced or not. However from browsing the EV6 Owners USA group, [XXX] had the same issue, and his car was fixed per whatever Kia place that is around him. He still has the P056216 alert and was told it will go away after whatever period of time. This is what the Kia repair place told him. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11717025