Owners of Hyundai, Kia and Genesis electric vehicles are suing the automakers, claiming a charging component defect that was supposedly fixed by recall years ago never actually went away. Plaintiffs Hayes Young and Roy A. Williams filed the case against Hyundai Kefico Inc. on April 21, 2026, in the US District Court for the District of New Jersey, according to a summary of the complaint published by AboutLawsuits.com.

Key Points

• The suit covers roughly 180,000 vehicles: the 2022-2024 Kia EV6, 2022-2024 Hyundai Ioniq 5, 2023-2025 Hyundai Ioniq 6, 2023-2025 Genesis GV60, 2023-2025 Genesis GV70 Electrified, and 2023-2024 Genesis GV80 Electrified
• The component at issue is the Integrated Charging Control Unit, or ICCU, which manages charging of the 12-volt auxiliary battery in these EVs
• Hyundai issued its first ICCU recall in 2024; the lawsuit claims the repairs did not resolve the defect
• Plaintiffs allege Hyundai identified the underlying issue as early as October 2022, well before the first public recall

The ICCU sits at the center of two separate Hyundai recalls filed with NHTSA. The first, Recall 24V-204, covered 98,878 Ioniq 5, Ioniq 6 and Genesis EV models and described a defect in which “overcurrent, overvoltage induced at the end of high-voltage battery charging, and certain thermal loading” could damage the ICCU and cause its internal fuse to open, cutting off charging to the 12-volt battery. A second, larger recall, 24V-868, expanded the affected population to 145,235 vehicles months later, describing a related failure mode in which an internal transistor inside the ICCU can fail and again open the fuse.

In both filings, Hyundai told regulators that once the fuse opens, the vehicle drops into a fail-safe mode that keeps the air bags, brakes and steering working, but “if the vehicle is driven until the 12-volt battery state-of-charge is fully depleted, the vehicle will lose all motive power,” raising crash risk. Hyundai’s remedy under both recalls was a mix of ICCU software updates and, where needed, replacement of the ICCU assembly and its fuse.

The new lawsuit argues that remedy never solved the problem for a meaningful share of owners, and that vehicles continue to lose power from the same underlying ICCU flaw after the recall repair was performed. The complaint further accuses Hyundai of “deceptive, unfair and misleading marketing” by continuing to sell and lease the affected EVs while allegedly aware of the defect’s true scope.

What Owners Should Do

• Check recall status by VIN at NHTSA’s recall database, since two separate ICCU campaigns may apply depending on the vehicle
• Report any recurrence of warning lights, reduced power, or failure to charge the 12-volt battery to a dealer immediately, even if the recall repair was already completed
• Keep repair and service records, since the lawsuit’s damages claims center on vehicles that experienced problems after the official fix

Hyundai has not issued a public statement responding to the April 2026 complaint.