Hyundai extends EV charging unit warranty to 15 years despite ongoing defect concerns

On the Dash:

• Extended warranty coverage may reduce customer friction but increase service traffic tied to ICCU diagnostics and repairs.
• Ongoing concerns about EV component reliability could affect buyer confidence and dealership sales conversations.
• Potential expansion of similar programs to Kia and Genesis may broaden service and warranty exposure across dealer networks.

Hyundai is extending its warranty coverage on a key EV component following years of reported failures that can leave vehicles inoperable, according to a new Cars.com report.

The automaker intends to cover the integrated charging control unit (ICCU) for up to 15 years or 180,000 miles in affected EVs, significantly expanding protection beyond its standard warranty. The component, often referred to as the onboard charger, regulates power flow between the high-voltage battery and the vehicle’s 12-volt system.

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The move follows widespread reports dating back to 2021 of ICCU failures that can result in a complete loss of power.

The automaker previously recalled nearly 150,000 vehicles in 2024 tied to the issue, with additional affected models spanning Hyundai, Kia, and Genesis brands built on the E-GMP platform.

Impacted vehicles include popular models, such as:

• Hyundai Ioniq 5
• Ioniq 6
• Kia EV6
• Several Genesis EVs.

While Hyundai has confirmed the warranty extension, similar actions from Kia and Genesis have not yet been formally announced, though updates to dealers are expected.

The ICCU plays a critical role in EV operation, managing both charging and auxiliary battery support. Failures can prevent the 12-volt battery from charging, ultimately leading to vehicle shutdown and increased safety risks.