TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the Kia Navigation Updater available at update.kia.com. The software update may improve system performance, enhance existing features, and apply the latest operating software for supported vehicles (2021-2026MY All Models).
full bulletin at NHTSA ↗2023 Kia EV6 electrical problems
moderate Owners of the 2023 Kia EV6 have filed 80 NHTSA complaints about the electrical at roughly $850 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See electrical across all vehicles →
Complaints
80
Recalls
0
Avg fix
$850
| Model year | electrical complaints |
|---|---|
| 2022 EV6 | 171 |
| 2023 EV6 (this page) | 80 |
| 2024 EV6 | 35 |
| 2025 EV6 | 27 |
What stands out
Electrical accounts for 61% of every owner complaint on file for this vehicle — the dominant problem area across 5 categories tracked.
Owners have filed 80 electrical complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering electrical on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
WARRANTY EXTENSION CAMPAIGN: TECHNICAL SERVICE BULLETIN: ICCU INSPECTION/REPLACEMENT (WTY044) - This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY044) to inspect and, if necessary, replace the Integrated Charging Control Unit (ICCU) and/or the ICCU Fuse on 2022-2024MY EV6 (CV1) vehicles produced from November 17, 2021 through July 22, 2024. The affected vehicles may exhibit difficulty or inability to charge the subject vehicles using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function, and/or display of the “Check electric vehicle system” warning message. The warranty coverage for repairs related to the ICCU with abo
full bulletin at NHTSA ↗WARRANTY EXTENSION CAMPAIGN: OWNER NOTIFICATION (WTY044) - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to the Integrated Charging Control Unit (ICCU) in 2022-2024 MY EV6 vehicles from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address concerns involving the ICCU, which may result in the difficulty or inability to charge your vehicle using Level 1 or Level 2 AC charging and/or inability to use the Vehicle-to-Load (V2L) function to supply AC electric power to
full bulletin at NHTSA ↗WARRANTY EXTENSION CAMPAIGN: QUESTION AND ANSWER (WTY044) - This document is the Question and Answer Guide containing the most frequently asked questions regarding the Warranty Extension Campaign WTY044.
full bulletin at NHTSA ↗WARRANTY EXTENSION CAMPAIGN: DEALER PRINCIPAL MEMO (WTY044) - This document is the announcement to the dealer principals advising that Kia is extending the New Vehicle Limited Warranty coverage to all owners for certain repairs related to the Integrated Charging Control Unit (ICCU) in 2022-2024 MY EV6 vehicles manufactured from November 17, 2021 through July 22, 2024, from 10 years / 100,000 miles to 15 years / 180,000 miles, whichever comes first, starting from the date the vehicle was first put into service. This warranty extension is to address concerns involving the ICCU, which may result in the difficulty or inability to charge the subject vehicles using Level 1 or Level 2 AC charging a
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The dominant failure pattern across these 77 complaints is the ICCU (Integrated Charging Control Unit). When it fails, the 12-volt battery stops charging, and the car loses power without warning. Owners describe hearing an audible "pop" (the ICCU fuse blowing), followed by dashboard warnings like "Check Electrical System" and "Stop Vehicle and Check Power Supply." Within seconds to minutes, the car either enters limp mode at 12-25 mph or dies completely. Many failures occur on highways at 40-70 mph, creating collision hazards; one owner coasted from 70 mph across three lanes of traffic to reach the shoulder.
Multiple owners completed Kia's SC327 recall service, yet the ICCU still failed months later—suggesting the recall software fix does not address root-cause hardware failure. Parts shortages keep vehicles in dealer service bays for 2-3 weeks to over 30 days. Dealers initially quoted nearly $4,000 to repair; Kia's customer care eventually approved warranty coverage.
Secondary electrical issues include Level 2 charging failures (chargers trip breakers, vehicle refuses to start while plugged in), 12-volt battery rapid depletion cycles, audio system blackouts with lost safety warning sounds, and brake light failure in one-pedal driving mode. One owner's ICCU failure damaged their home ChargePoint charger. Another reports USB port fire hazard at 4,000 miles, with the dealer refusing to acknowledge electrical origin.
Owners consistently report vague dashboard warnings, no clear indication of imminent shutdown, and doors/hazard lights becoming non-functional during ICCU events—compounding danger.
Same Kia EV6 electrical reports on nearby years: 2022 · 2024 · 2025
Failure modes owners describe
ICCU (Integrated Charging Control Unit) Failure
The ICCU fails, causing loss of 12-volt battery charging and vehicle power loss. Owners report the component shorts internally, blows its associated fuse, and leaves the vehicle unable to start or drive. Multiple owners indicate the failure occurs despite recall service (SC327, SC302) being performed.
When: Between ~500 miles to 30,000 miles; some failures occur shortly after recall service; timing varies from weeks to months of ownership
Symptoms owners cite: 12-volt battery voltage drops drastically (6.2V, 5.5V, 8V recorded); Vehicle loses all or partial power while driving; Dashboard warning: 'Check Electric Vehicle System' or 'Check Electrical System'; Dashboard warning: 'Stop Vehicle and Check Power Supply' (flashing red); Vehicle enters 'limp mode' or 'turtle mode' with speed limited to 12-25 mph; Audible 'pop' sound (reported as fuse blowing); Vehicle stalls, becomes completely unresponsive; Doors will not unlock, cannot shift to neutral; Hazard flashers will not activate; Unable to start vehicle after power loss
Codes mentioned: P1A9096, P1E3716, 24V-867, 24V200000
Repairs/costs cited: ICCU assembly replacement (Part# 364-1XFA0AQQK); ICCU fuse replacement (Part# 375F2-GI040QQK). Owners report repairs cost $366.66 for 12V battery alone (which did not fix the problem), and full ICCU repair initially quoted at nearly $4,000 before warranty coverage applied. Repair times: 2-3 weeks to 42+ days due to national parts backorder. One owner reports vehicle in dealer possession for 30+ consecutive days across multiple failed repair attempts.
Recalls/TSBs owners mention: Kia issued recalls SC302, SC327, and SC327Y1 for ICCU software updates and component replacement. However, owners report recall service did not prevent subsequent failures. Kia's customer care covered ICCU repair under warranty after initial quote denial. TSB ELE-283 issued but noted as ineffective by at least one owner. Kia roadside assistance failed to recognize VIN on at least one call. One owner states Kia declined to authorize warranty fix and suggested waiting for a fault to appear.
Level 2 AC Charging Failure
Vehicle fails to charge via Level 2 (240V) home chargers or commercial charging stations. Owners report charging stops mid-session, chargers trip their circuit breakers, and chargers become inoperable. Some owners forced to reduce charging current to 'reduced' settings.
When: After 2 months of ownership; intermittently; some temperature-dependent (June/summer heat in Arizona noted)
Symptoms owners cite: Charging stops without warning after 10-20 minutes or mid-charge; Message 'Charging Interrupted' or 'Charging Failed' displayed; Home charger circuit breaker trips (60-amp breaker on 48-amp hardwired system); Commercial charger becomes unresponsive or inoperable; Vehicle refuses to start when plugged in; Dashboard message 'Check Electrical Vehicle System' during charging
Codes mentioned: DC/DC converter input voltage sensor fault
Repairs/costs cited: ICCU replacement required in some cases. Charging current must be reduced from advertised 48-50 amps to 36-40 amps. One owner installed TSB ELE-283 software update without resolution. Owners report dealerships lack infrastructure (higher-amp Level 2 chargers) to reproduce issue during diagnostics. One home charger (JuiceBox EV40) damaged and required replacement under charger warranty; one ChargePoint charger damaged by ICCU failure.
Recalls/TSBs owners mention: Kia website advertises 11kW on-board charger capable of 7-hour charge 10-100% but owners cannot achieve this due to overheating. TSB ELE-283 applied but did not resolve charging at advertised speeds. Dealerships reported unable to confirm issue due to lack of high-amp charging capability at service centers. No OTA fix offered for one temperature-related charging issue.
12-Volt Battery Rapid Depletion and Charging Failure
The 12-volt auxiliary battery drains rapidly or fails to charge while the vehicle is driven or parked. Root cause appears related to ICCU malfunction, but some owners report cycling behavior that degrades the battery independent of ICCU failure. Owners report battery replaced multiple times (up to four times) without resolution of underlying issue.
When: Approximately 1 year of ownership (~22,000 miles); some failures earlier; some intermittent
Symptoms owners cite: 12-volt battery voltage drops from normal (12.6V+) to critical levels (6.2V, 5.5V, 8V) while driving or parked; Dashboard message '12 Volt Battery Low' or '12 Volt Battery Failure'; Vehicle fails to start; Complete electrical loss; Rapid discharge cycles (26 complete cycles in 2 months on one vehicle)
Codes mentioned: 24V200000
Repairs/costs cited: 12-volt battery replaced multiple times by dealers; one owner replaced with OEM battery and later upgraded to AGM battery, then lithium battery with integrated monitoring. Owner's monitoring system showed vehicle cycling 12V battery from full discharge to 100% charge routinely while driving, which accelerates battery degradation. One owner measured 6.2V, charged externally to 13.2V (full), confirmed health at 12.6V after 12-hour rest, ruling out battery fault and pointing to vehicle charging system.
Recalls/TSBs owners mention: Dealers perform diagnostics and report battery 'passes tests' while issue persists. SC302 recall exists but does not appear to cover all affected VINs. One owner's VIN not listed on SC302 recall despite symptoms matching recall description.
Vehicle Power Loss While Driving
Vehicle loses propulsion and enters limp mode or complete shutdown while being driven, creating serious collision hazards. Many incidents occur on highways at high speed (40-70 mph) with limited ability to safely pull over.
When: Varies; some after short drives (~20 miles), some after longer highway driving; timing unpredictable
Symptoms owners cite: Sudden loss of acceleration or severe speed limitation (12-25 mph); Dashboard warning 'Check Electrical System'; Dashboard warning 'Stop Vehicle and Check Power Supply' (flashing red, 2-10 second warning before loss of power); Vehicle enters 'limp mode' or 'turtle mode'; Complete power loss and stalling; Loss of steering assistance (may occur)
Codes mentioned: P1A9096 (DC converter sensor fault)
Repairs/costs cited: ICCU replacement is the primary repair. One owner drove vehicle home at 20-30 mph in reduced power mode before towing. Another owner coasted to shoulder from 70 mph on divided highway. Repairs complicated by national parts backorder; one dealer quoted 3 weeks initially, later 3 months.
Recalls/TSBs owners mention: Recall SC327 issued; however, multiple owners report power loss occurs despite recall service being completed. One owner had recall performed January 8, 2025, then experienced power loss February 6, 2025. No preventive software fix has permanently resolved the issue; underlying ICCU hardware failure appears to be root cause.
Charging System Overheating at High Amperage
Vehicle's on-board charging system overheats when attempting to charge at advertised high amperage (48-50 amps on Level 2), forcing owners to reduce charging current. Vehicle may be capable of fast charging at rates specified in marketing materials, but actual performance does not match advertisement.
When: After vehicle purchase/first charging attempts; summer heat in Arizona exacerbates issue
Symptoms owners cite: Charging fails or stops when charger set to 40+ amps; Vehicle overheats during high-amperage charging; Charging must be reduced to 36-40 amps to function; Charging time dramatically increases (e.g., 7-hour advertised time unachievable); Charger and vehicle both disconnect to prevent overheat condition
Repairs/costs cited: TSB ELE-283 software update applied; does not resolve overheating. Owners forced to use 'reduced' charging setting, which increases charging time by approximately 50%. One owner purchased 48-50 amp ChargePoint Home Flex charger in reliance on vehicle specifications.
Recalls/TSBs owners mention: Kia website advertises 11kW on-board charger for 7-hour 10-100% charge. Kia acknowledges dealership service departments lack capacity to charge at higher speeds (48-50 amps), preventing replication of issue during diagnostics. TSB ELE-283 applied but ineffective. No fix offered to make vehicle perform as advertised.
One-Pedal Driving Brake Light Failure
When using one-pedal regenerative braking mode, the vehicle does not illuminate brake lights when the driver releases the accelerator to decelerate. This creates a collision hazard for following vehicles, which receive no indication the vehicle is slowing.
When: Any time one-pedal driving mode is active
Symptoms owners cite: Brake lights do not illuminate during regenerative braking (when accelerator is released); Brake lights only illuminate when brake pedal is fully depressed; Following vehicles have no warning that EV6 is decelerating; Near rear-end collisions reported
Repairs/costs cited: Owner disabled one-pedal driving mode as workaround. No repair offered.
Recalls/TSBs owners mention: Kia informed owner 'as of now we are not aware of any updates coming out for this feature.' Complaint filed with Kia for review. Notably, parent company Hyundai announced it will issue an OTA fix for the same issue on the Ioniq 5, while Kia has stated no fix is planned for EV6.
Audio System Failure / Extreme Noise
Infotainment and audio system produces extremely loud piercing static or abnormal noise, or all audio output ceases. Some owners report loss of all alert sounds (collision warnings, blind spot alerts, cross-traffic alerts) rendering safety systems inaudible.
When: Random instances, several times per week for months; usually within 5 minutes of startup; occasionally all-day episodes after short drives
Symptoms owners cite: Extremely loud piercing static noise from all speakers; All audio output ceases (music, alerts, Bluetooth calls, warning sounds); Collision warning, blind spot warning, and cross-traffic warning sounds disabled; Bluetooth calls impossible due to no audio; Noise lasts 15+ minutes; requires vehicle reset or hours of off-time to resolve; No warning lights; failure occurs randomly without pattern
Repairs/costs cited: Software update attempted; did not resolve. Owner reports forum posts suggest amp replacement may be necessary but no dealer has offered this solution. Resetting infotainment via button does not resolve. Unplugging fuses does not resolve. Owner notes issue is common on EV6 forums but dealers are unfamiliar with root cause.
Recalls/TSBs owners mention: Dealer unable to diagnose or repair. Software update offered but ineffective. No TSB or known fix identified in complaint narratives.
Heated Seat and Steering Wheel Control Sensitivity
Steering wheel controls for heated seat and steering wheel functions are overly sensitive and positioned too close together, causing unintended activation and distraction while driving.
When: During normal driving, particularly in bright sunlight making controls difficult to see
Symptoms owners cite: Unintended activation of heated seats or steering wheel heater; Controls too sensitive to light touch; Controls difficult to distinguish in bright sunlight; Driver distraction while attempting to verify which feature is activated; Driver veered off road while checking controls
Repairs/costs cited: No repair documented. Dealer referred contact to manufacturer; manufacturer provided no assistance.
Recalls/TSBs owners mention: Manufacturer contacted but no assistance provided.
Door Lock Failure
Doors fail to unlock via remote key fob or automatic unlock function, requiring manual key unlock. Some incidents coincide with 12-volt battery depletion from ICCU failure.
When: Intermittent; some during ICCU-related power loss events
Symptoms owners cite: Remote key fob fails to unlock doors; Automatic door unlock function disabled; Manual key unlock required; Multiple doors remain locked except driver's door (during ICCU power loss events)
Repairs/costs cited: No independent repair documented for remote unlock failure. ICCU repair resolves door lock issues when related to 12V battery depletion.
Recalls/TSBs owners mention: Not documented in narratives provided.
Horn Button Failure
Horn button fails to operate on multiple occasions. Panic button on key fob can still sound horn, but primary horn control is inoperative.
When: Several occasions without warning; intermittent
Symptoms owners cite: Horn button does not sound horn; Panic button on key fob still functions; Failure unpredictable
Repairs/costs cited: Vehicle not repaired; dealer advised vehicle needed to be left for inspection at earliest availability.
Recalls/TSBs owners mention: Manufacturer notified and provided case number; vehicle not repaired.
Rear Seat 120V AC Outlet Ground Fault
Rear seat 120V AC voltage outlet indicates open ground when tested with outlet tester, posing electrical shock hazard to users.
When: At time of inspection (approximately 4,000 miles)
Symptoms owners cite: Outlet tester indicates open ground; Device plugged into outlet powers up (masking problem); Electrical shock hazard when outlet is used
Repairs/costs cited: Dealer service department stated all is well based on device powering up; did not perform proper ground continuity testing. No repair completed.
Recalls/TSBs owners mention: Dealer stated no repair needed; lack of proper test equipment and knowledge of 120V household electrical safety.
AC Compressor Failure
Air conditioning system fails, emitting loud high-pitched noise from under hood when compressor should engage. Issue began after Kia OTA update in May.
When: After OTA update in May; 2+ months without repair as of complaint date
Symptoms owners cite: AC does not cool; Loud high-pitched sound from under hood when AC should engage; Vehicle stranded at dealership without repair progress
Repairs/costs cited: Vehicle at dealership since June 12; no service work performed. Supplemental OTA update issued but did not resolve. Owner suspects dealership lacks EV technicians capable of diagnosis.
Recalls/TSBs owners mention: OTA update issued (May); supplemental update issued but ineffective.
USB Charging Port Fire Hazard
USB charging port on vehicle remained active while vehicle was parked and off, causing USB cable to ignite. Fire damage noted on front driver's seat.
When: At approximately 4,000 miles; vehicle parked and off
Symptoms owners cite: USB cable caught fire; Burn hole approximately ¾ inch deep, nickel-sized, in front driver's seat; Smell of burned rubber
Repairs/costs cited: Dealer unwilling to repair; dealer did not believe failure was electrical malfunction.
Recalls/TSBs owners mention: Dealer declined to repair and disputed electrical origin of fire.
Power Loss at Specific Battery Thresholds During Highway Driving
Vehicle loses power and enters limp mode when battery reaches specific thresholds (35% or 55%) during highway driving above 55 mph, but not at lower speeds.
When: Only at highway speeds above 55 mph; not at lower speeds; not every time battery reaches threshold
Symptoms owners cite: 'Power is Limited' warning on dash; Vehicle loses power and enters limp mode; Limited acceleration capability; Unpredictable timing (not every time threshold reached)
Repairs/costs cited: Dealership unable to run diagnostic; technicians unavailable; no loaner vehicle provided. Vehicle unreliable for commuting.
Recalls/TSBs owners mention: Dealer offered 2-week wait for appointment with no technician available for diagnostic. Second dealer advised 1-week minimum hold with no rental option.
Charging Interrupted at Higher Amperage (Temperature-Related)
Vehicle fails to charge when outside temperature exceeds 90°F (Arizona summer heat) at charger amperage above ~36 amps. Vehicle charges successfully at reduced current in summer heat.
When: June and beyond; when ambient temperature exceeds 90°F
Symptoms owners cite: Charging fails at 40-amp setting in high heat; Charging succeeds at reduced current setting; Issue did not occur in cooler months; 'Charging Failed' error message
Repairs/costs cited: Owner operates charger in 'reduced' mode year-round to prevent failure; significantly increases charging time.
Recalls/TSBs owners mention: Not documented in narratives.
Synthesized from 80 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 10 most recent
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
Hello NHTSA, I hope this message finds you well. I would like to provide specific details regarding the issues with my car as per your guidelines: 1. **Failed Component or System:** The charging system has malfunctioned, leading to extreme range decrease, constant charging failures, inconsistent charging speeds, and signs of overheating. The charging system warning light is on. 2.…
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.…
El vehículo desde las 500 millas comenzó a encender el aviso de problema en sistema eléctrico , como era intermitente no pudieron arreglarlo , luego el sistema de entretenimiento se apagaba solo , la batería se sobrecalentaba mucho estando apagado y estacionado , por último dejó de recargar la batería , me dejó tirado en medio de la autopista , casi me accidento , lleva dos meses en el…
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 failure
The vehicle gave the warning to check the electrical system, as a result the battery cannot be recharged.It only accepted the charger for two minutes and then disconnected, now it only says it could not be recharged. They reprogramed it from the MOTOR AMBAR distributor but they did not find the it fails. Now i have a decorative vehicle in my garage and no one knows how to fix it.What if the…
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…
Had electrical trouble with your 2023 Kia EV6?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the electrical problem on the 2023 Kia EV6?
It's a documented issue but not catastrophic. 80 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Based on the 80 complaints filed, electrical issues most often appear around 12,873 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2023/Kia/EV6.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.