Two ICCU recalls, loss of drive power at speed. EV6 dealer visits for power loss may qualify for a California buyback. Free case review.
You bought a Kia EV6 to escape gas stations, not to worry about your car dying on the freeway. But for tens of thousands of EV6 owners, that is exactly what happened. The culprit is the Integrated Charging Control Unit — the ICCU — a component that manages the flow of electricity between the high-voltage battery and the 12-volt system that runs your car's computers, power steering, and drive controls. When the ICCU fails, it stops recharging the 12-volt battery while you drive. The car doesn't shut off immediately — it gradually loses control over its own systems over the next twenty to forty-five minutes, with warning lights cascading across the dashboard until the vehicle slows to a halt in traffic. Kia knew about this failure mode as early as 2023. A voluntary service campaign (SC271) quietly offered software fixes to owners before a full NHTSA investigation forced a federal recall in March 2024 (24V200, campaign SC302) covering 48,232 EV6s. By November 2024, Kia was back with a second, expanded recall (24V867, SC327) — this time covering 62,872 vehicles — because the first recall's repair was not holding. As of April 2026, owners who went through both rounds of repairs have joined a class action alleging the replacement ICCU units are also defective. Multiple repair attempts for the same dangerous defect is the definition of a lemon-law pattern in California.
The issues owners report most, ranked by severity — each one verified against a cited NHTSA source.
Dashboard lights up with 'Check Electric Vehicle System,' 'Stop vehicle and check power supply,' Master Warning, and Charging System Warning messages; audible chimes; car progressively loses power over 20-45 minutes and can shut down completely while driving; 12V battery drains even when parked; car may fail to start the next morning.
Charging session stops unexpectedly on Level 2 (240V AC) charger; charging speed drops below expected rate without explanation; car shows charging errors or does not reach full state of charge overnight.
Car rolls away from parked position despite being in PARK with electric parking brake set; vehicle may move unexpectedly on inclines after driver exits.
Sudden complete loss of motive power without warning while driving; possible clunk or noise at the rear axle before failure; vehicle will not accelerate.
Dealer unable to diagnose battery-related warning lights or reduced-power events accurately; battery management system stores a single generic fault code that does not identify the specific battery cell or module with the issue, leading to repeated failed repair attempts.
Instrument cluster repeatedly displays 'Slippery road ahead' or 'Uneven road ahead' warnings every ~10 seconds while parked or driving on normal roads; radio hard key or RADIO menu icon does not respond to inputs (FM/AM/SiriusXM non-functional).
A settled Margarian Law case on this exact model, published with the actual settlement math.
Open any defect for the symptoms and why it matters for a California lemon-law claim. Each is tied to a cited NHTSA source.
Dashboard lights up with 'Check Electric Vehicle System,' 'Stop vehicle and check power supply,' Master Warning, and Charging System Warning messages; audible chimes; car progressively loses power over 20-45 minutes and can shut down completely while driving; 12V battery drains even when parked; car may fail to start the next morning.
High lemon-law relevance: sudden loss of drive power on a public road is a safety defect. Two federal recalls (24V200 + 24V867) and a prior voluntary campaign (SC271) on the same ICCU failure mode — some owners experienced failure after SC302 repair, prompting SC327, which itself has been challenged in a 2026 class action alleging the replacement ICCU units are also defective. Multiple repair attempts for the same defect is a strong lemon-law pattern.
ICCU software update (Upgrade Event #735 / SC302) or ICCU assembly + fuse replacement followed by updated software (SC327). Vehicles repaired under 24V200 must be re-serviced under 24V867 with the latest software. All repairs free under recall.
Charging session stops unexpectedly on Level 2 (240V AC) charger; charging speed drops below expected rate without explanation; car shows charging errors or does not reach full state of charge overnight.
Moderate lemon-law relevance: a BEV that cannot reliably charge at home on Level 2 is substantially impaired in use and value. If charging issues persist after SC311 and ELE283 remedies, repeated repair attempts bolster a lemon-law claim.
VCMS ECU software update per SC311 (Upgrade Event via KDS). Free service campaign. ELE283 addresses the inlet overheating path via a separate VCMS update (Upgrade Event #643).
Car rolls away from parked position despite being in PARK with electric parking brake set; vehicle may move unexpectedly on inclines after driver exits.
Safety recall affecting vehicle rollaway. Relevant if customer experienced a rollaway incident or required multiple repair visits. Limited to early-production 2022 vehicles.
SCU software update via KDS Upgrade Event #615 (ROM updated to ECV1XXXXXXE19XS2). Free dealer service under recall 22V322.
Sudden complete loss of motive power without warning while driving; possible clunk or noise at the rear axle before failure; vehicle will not accelerate.
A manufacturing defect causing sudden loss of drive power qualifies as a safety defect. Small population (1,039 units) but complete loss of power at speed is catastrophic. Relevant for 2023 MY owners in the affected production window.
Proactive replacement of rear inner drive shaft (Part No. 49560-GI000) with properly heat-treated unit. Free under recall 24V057.
Dealer unable to diagnose battery-related warning lights or reduced-power events accurately; battery management system stores a single generic fault code that does not identify the specific battery cell or module with the issue, leading to repeated failed repair attempts.
Indirectly relevant: imprecise diagnosis software can cause a dealer to misdiagnose or fail to repair the underlying battery defect, leading to multiple return visits — a key lemon-law factor. Document all dealer ROs where technician cited inability to replicate or identify fault.
BMS software update via KDS Upgrade Events #656 (2023 MY) / #657 (2022 MY) per TSB ELE290. ELE291 also applicable for 2022 MY — adds Battery Conditioning preconditioning function.
Instrument cluster repeatedly displays 'Slippery road ahead' or 'Uneven road ahead' warnings every ~10 seconds while parked or driving on normal roads; radio hard key or RADIO menu icon does not respond to inputs (FM/AM/SiriusXM non-functional).
Lower standalone lemon-law weight but can be cited in aggregate with other defects to show a vehicle with systemic software quality issues. False ADAS warnings may constitute a safety concern if they distract the driver.
AVN software update via USB Flash Drive B (EV6-specific) per TSB ELE314. Radio non-response addressed under TSB ELE303. Both are USB flash updates at dealer.
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Same ICCU failure mode as 24V200: transient high voltage and thermal cycling damage the ICCU, preventing 12V battery charging. Expanded to include additional 2024 MY vehicles produced Feb 28 – Jul 22, 2024 not covered by 24V200. Vehicles previously repaired under 24V200 require the updated remedy under this recall.
superseded
ICCU may become damaged by transient high voltage and thermal cycling, preventing it from recharging the 12V auxiliary battery. Discharging 12V battery causes progressive loss of low-voltage system functions including drive control. DTC P1A9096 is the diagnostic indicator.
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Supplier manufacturing error resulted in rear inner drive shafts that were improperly heat-treated. An improperly heat-treated driveshaft may fracture under normal driving load.
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In vehicles equipped with Shift-by-Wire, a voltage fluctuation while the vehicle is OFF and in PARK may corrupt the SCU command signal to the parking pawl actuator, temporarily disengaging the parking mechanism.
Every item below comes from this vehicle's documented defects. The more you recognize, the more a free case review is worth your time.
California's Song-Beverly Consumer Warranty Act gives you specific rights when a manufacturer fails to fix a defect after a reasonable number of attempts. For safety defects — and loss of drive power at highway speed qualifies — California presumes two repair attempts may be sufficient. For other substantial defects, four attempts or 30 or more cumulative days out of service during the warranty period trigger the presumption. If your EV6 qualifies, you may be entitled to: a full vehicle repurchase (purchase price plus taxes and fees, minus a mileage offset for use before the first repair attempt), a comparable replacement vehicle, or a negotiated cash settlement. If you prevail, Kia pays your attorney fees — which means many California lemon law cases cost the owner nothing out of pocket. The EV6's ICCU pattern — a voluntary campaign, two federal recalls, and a hardware-replacement TSB for the same failure mode — is exactly the kind of documented, repeated-repair scenario the Song-Beverly Act was designed to address. The above is general legal information only and is not legal advice; every case depends on its specific facts, repair dates, and mileage.
“Could not duplicate” doesn't mean the defect isn't real. Here's exactly what to do to protect a potential California lemon-law claim.
Document the moment it happens. Photos, video, and screenshots of any warning lights — with the date and the mileage.
Get a repair order every visit — even “found nothing.” That paperwork is the foundation of a claim.
Check your VIN at nhtsa.gov/recalls. Note any recall that has no available remedy yet.
Track your out-of-service days. California law counts the cumulative days your vehicle spends in the shop.
Keep loaner & rental records. Alternate-transport paperwork during long repairs matters.
Save everything in one place. Symptoms, dates, repair orders, and every repeat visit — the intermittent ones especially.
EV6 ICCU failures are intermittent — the car may run fine for days after a warning, and dealers relying on a quick scan may find nothing stored. Here is what to do if the dealer writes 'unable to duplicate' or 'no trouble found' on your repair order: 1. Write down every symptom before your visit. Include the exact warning message text, the date, time, mileage, recent charging history, and any audible alerts. Photograph the cluster warnings if you can do so safely. 2. Ask the service advisor to pull ALL stored and historical DTCs — not just current codes. DTC P1A9096 may clear itself but remain in the freeze-frame history, which is the key evidence for the ICCU defect. 3. Specifically request that the dealer check TSB SC302Y. This Kia-issued procedure (NHTSA document MC-11015232) governs hardware replacement when the software-only SC302 repair did not hold. If your EV6 was repaired under SC302 or SC271 and the problem returned, SC302Y is the documented follow-on fix. A dealer who only did a software update and calls it done has not completed the full published repair sequence. 4. Confirm your recall status for both 24V200 and 24V867 at nhtsa.gov before your visit. The second recall (24V867) requires re-servicing vehicles that were already repaired under 24V200 — some dealers may not be aware. 5. Keep every repair order, including UTD ones. Under California law, a visit where the dealer cannot duplicate the problem is still a repair attempt and counts toward the lemon-law threshold.
Three separate Kia remedies for the same ICCU defect — SC271, SC302 (recall 24V200), and SC327 (recall 24V867) — and a class action filed in April 2026 alleging the replacement hardware is still defective. If your EV6 has been to the dealer for ICCU or power-loss symptoms even once, pull your repair orders. If it went back a second time under a different campaign number for the same root cause, that is the pattern California law is designed to catch. A free consultation with a lemon law attorney costs you nothing and could result in a full buyback.
— The Margarian Law team
Has your Kia EV6 lost power while driving, refused to start despite a charged battery, or returned to the dealer for the ICCU issue more than once? Your service records may already document the pattern California lemon law requires. The consultation is free — find out whether you qualify for a buyback.
If you own a 2022, 2023, or 2024 Kia EV6, your vehicle is almost certainly covered by at least one — and likely both — of the ICCU federal safety recalls. NHTSA recall 24V200 (issued March 2024, Kia campaign SC302) originally covered 48,232 EV6 vehicles. It was expanded and superseded by recall 24V867 (issued November 2024, campaign SC327), which covers 62,872 EV6 vehicles produced from November 17, 2021 through July 22, 2024. The defect: the Integrated Charging Control Unit (ICCU) can be damaged by voltage spikes and heat, causing it to stop recharging the 12-volt battery while the car is in motion. As the 12-volt battery discharges, the vehicle progressively loses drive power. You can confirm your specific recall status by entering your VIN at nhtsa.gov.
What you experienced is the documented ICCU failure sequence. The Integrated Charging Control Unit stops recharging the 12-volt auxiliary battery while the car is moving. As the 12-volt system runs down, the vehicle's computers, drive controls, and power steering lose power one by one — often over 20 to 45 minutes. Dashboard warnings typically appear first: 'Check Electric Vehicle System,' 'Stop vehicle and check power supply,' and audible chimes. The car eventually slows and may stop entirely. NHTSA investigation PE23-012 documented this pattern and directly triggered recall 24V200. The defect is a confirmed safety hazard. If your EV6 has done this more than once — even after a dealer service visit — those incidents are part of a repair-attempt record that may qualify for a California lemon law claim.
Yes. If your EV6 was serviced under recall 24V200 (campaign SC302), you are required to return for the follow-on remedy under recall 24V867 (campaign SC327). The second recall was issued specifically because the software-only repair from SC302 proved insufficient — some vehicles experienced ICCU failure again after that service. SC327 calls for a fresh inspection, possible hardware replacement of the ICCU assembly and fuse, and installation of further-improved software with better thermal management and voltage control. If you received a recall notice in December 2024 for SC327, that is the letter. As of January 2025, approximately 14,828 of the 62,872 covered vehicles had been repaired under SC327 — check your VIN at nhtsa.gov to confirm your status.
A recurring ICCU failure after repair is a strong indicator that the fix was incomplete. Kia itself acknowledged this with TSB SC302Y (NHTSA document MC-11015232), a subsequent-repair procedure issued when the software update under SC302 did not clear diagnostic trouble code P1A9096. SC302Y requires physical replacement of the ICCU assembly and the ICCU fuse — not just a software reflash. If your dealer performed a software-only repair under SC302 and the loss of power has recurred, ask them to pull P1A9096 from the freeze-frame history and reference SC302Y specifically. Under California's Song-Beverly Act, a second repair attempt for the same safety defect — or a failure of the first repair — may be enough to trigger the lemon-law presumption. Keep all repair orders. A California lemon law consultation is free and can help you understand whether the documented repair sequence qualifies your vehicle for a buyback.
It may, depending on your repair history. California's Song-Beverly Consumer Warranty Act presumes a vehicle is a lemon if: the manufacturer has made two or more unsuccessful repair attempts for a safety defect (loss of drive power qualifies), or four or more attempts for any substantial defect, or if the car has been out of service for 30 or more cumulative days during the warranty period. For the EV6, the ICCU pattern is particularly relevant: there were two federal recalls plus a voluntary campaign for the same root cause, and a separate TSB (SC302Y) documenting that the first repair often requires a follow-up. If your EV6 has been to the dealer for ICCU or power-loss symptoms under two or more separate service visits or campaign numbers, those visits count toward the threshold. Time waiting for backordered ICCU hardware also counts toward the 30-day rule. The analysis depends on your specific dates and repair orders — a free case evaluation with a California lemon law attorney is the best way to know where you stand.
Not a recall — but it is a documented, confirmed defect with Kia-issued remedies. Two separate voluntary service campaigns address this: SC311 (NHTSA document MC-11000536) updates the Vehicle Charging Management System (VCMS) software for interrupted or slow Level 2 sessions; TSB ELE283 (NHTSA document MC-10230617) addresses a related overheating problem at the combo charger inlet module. Both affect MY 2022-2024 EV6 vehicles. Ask your dealer whether SC311 and ELE283 have been applied to your vehicle. If charging problems continue after these fixes, or if you have already had the car in for this more than once, that visit history can be part of a broader lemon law claim — especially combined with the ICCU issues.
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