Hyundai KIA ICCU Defect: EV Owners Report Charging Failures and Power Loss Featured
Hyundai, Kia and Genesis electric vehicle owners report failed ICCUs, dead 12-volt batteries, charging problems and loss of power even after recall repairs.
Owners of certain Hyundai, Kia and Genesis electric vehicles have reported serious problems involving the Integrated Charging Control Unit, or ICCU. Reported problems include vehicles that will not charge, repeated 12-volt battery failures, dashboard warnings, reduced power and vehicles becoming inoperable.
The ICCU performs a critical job. It converts high-voltage battery power and helps keep the vehicle’s 12-volt battery charged. If the ICCU fails, the 12-volt battery may gradually discharge. That can lead to warning lights, reduced driving power and, in some circumstances, a complete loss of drive power. NHTSA has identified loss of drive power as a safety risk.
Which Hyundai, Kia and Genesis Vehicles May Be Affected?
Vehicles that have been recalled or are being investigated in connection with ICCU problems include:
- 2022–2024 Hyundai IONIQ 5
- 2023–2025 Hyundai IONIQ 6
- 2022–2024 Kia EV6
- 2024 Kia EV9
- 2023–2025 Genesis GV60
- 2023–2025 Genesis GV70 Electrified
- 2023–2024 Genesis G80 Electrified
- Other Hyundai, Kia and Genesis EVs using related ICCU technology, including the newer Hyundai IONIQ 9
Not every model year or vehicle is necessarily affected. Owners should check their VIN for applicable recalls.
Recalls Have Already Been Issued
Hyundai and Kia issued ICCU-related recalls in 2024. Hyundai’s later recall covered approximately 145,235 Hyundai and Genesis vehicles, while Kia’s recall covered approximately 62,872 EV6 vehicles. Both recalls replaced earlier ICCU recalls and required some vehicles that had already received the previous repair to return for another remedy.
Kia’s own records showed reports of loss of motive power after vehicles had received the earlier recall remedy. By November 2024, Kia identified 88 cases alleging loss of motive power following completion of that remedy.
Consumer Reports reported in February 2026 that Hyundai, Kia and Genesis EV owners continued to report charging failures, power loss and other electrical problems. Its survey data indicated ICCU-related problems in approximately 2% to 10% of owners, depending on model and model year. Some owners reported requiring more than one ICCU replacement.
Hyundai has since extended ICCU and ICCU fuse warranty coverage to 15 years or 180,000 miles for certain IONIQ 5 and IONIQ 6 vehicles.
Have You Experienced an ICCU Failure?
Attorneys are investigating potential claims involving Hyundai, Kia and Genesis vehicles affected by ICCU, charging and electrical-system problems.
You may want to contact us if your vehicle has experienced a dead 12-volt battery, inability to charge, “Check Electric Vehicle System” warning, reduced-power or turtle mode, repeated ICCU replacement, loss of drive power, towing, lengthy dealership repairs, or the same problem returning after a recall repair.
Complete the form on this page to tell us about your Hyundai, Kia or Genesis ICCU experience and learn more about your potential legal options. There is no cost or obligation to submit the form.
Own or lease a Hyundai, Kia, or Genesis electric vehicle that has experienced charging problems, ICCU failure, a dead 12-volt battery, reduced power, or other electrical issues? Complete this short form to tell us about your experience and learn more about your potential legal rights. There is no cost or obligation to submit the form.