Hyundai/Kia - ICCU failures - 15 years warranty
Discussion
I'm assuming this will apply to the UK as well at some point. Seems like they are finally admitting there are design faults with their early ICCUs and are doing the right thing by extending the warranty to 15 years for ICCUs.
"However, like many new platforms, the E-GMP has faced reliability issues - particularly with the Integrated Charging Control Unit (ICCU) used by Hyundai Motor Company and Kia Corporation. Located beneath the rear seat on the battery pack, the ICCU combines several key charging functions into a single unit, including the 11 kW onboard charger and bidirectional charging for vehicle-to-load (V2L).
In practice, the component has proven vulnerable: failures can occur without warning.
When the ICCU fails, it not only disables charging but can immobilise the entire vehicle due to its central role in the drivetrain system - often requiring the car to be towed. Reports indicate that this has also affected vehicles that had already received a replacement unit following an earlier ICCU defect.
While these issues were initially covered under warranty for new vehicles, they pose increasing risks for owners over time.
Replacement has also proven challenging, with some vehicles spending weeks in workshops due to limited spare parts availability - potentially leading to high repair costs.
As the German electric vehicle expert Stefan Moeller from the EV rental company Nextmove reports in his show NextNews, Hyundai and Kia have significantly extended the warranty for ICCU-related defects in Germany.
Following Finland’s lead, the ICCU warranty has been extended to 15 years from the date of first registration or up to 300,000 kilometres—whichever comes first. Other European markets are expected to follow suit.
For Hyundai, the extended warranty applies to Hyundai Ioniq 5 models built up to April 2024 and Hyundai Ioniq 6 units produced until September 2024. 'All Ioniq 5 and Ioniq 6 vehicles manufactured after April 2024 (Ioniq 5) and September 2024 (Ioniq 6) are already equipped with an ICCU featuring an optimised design,' Hyundai Deutschland said in a statement.
At Kia, the measure covers eligible pre-facelift versions of the Kia EV6 and EV6 GT built before 15 June 2024, for which the company is also granting an extended ICCU warranty."
https://www.electrive.com/2026/04/17/hyundai-and-k...
"However, like many new platforms, the E-GMP has faced reliability issues - particularly with the Integrated Charging Control Unit (ICCU) used by Hyundai Motor Company and Kia Corporation. Located beneath the rear seat on the battery pack, the ICCU combines several key charging functions into a single unit, including the 11 kW onboard charger and bidirectional charging for vehicle-to-load (V2L).
In practice, the component has proven vulnerable: failures can occur without warning.
When the ICCU fails, it not only disables charging but can immobilise the entire vehicle due to its central role in the drivetrain system - often requiring the car to be towed. Reports indicate that this has also affected vehicles that had already received a replacement unit following an earlier ICCU defect.
While these issues were initially covered under warranty for new vehicles, they pose increasing risks for owners over time.
Replacement has also proven challenging, with some vehicles spending weeks in workshops due to limited spare parts availability - potentially leading to high repair costs.
As the German electric vehicle expert Stefan Moeller from the EV rental company Nextmove reports in his show NextNews, Hyundai and Kia have significantly extended the warranty for ICCU-related defects in Germany.
Following Finland’s lead, the ICCU warranty has been extended to 15 years from the date of first registration or up to 300,000 kilometres—whichever comes first. Other European markets are expected to follow suit.
For Hyundai, the extended warranty applies to Hyundai Ioniq 5 models built up to April 2024 and Hyundai Ioniq 6 units produced until September 2024. 'All Ioniq 5 and Ioniq 6 vehicles manufactured after April 2024 (Ioniq 5) and September 2024 (Ioniq 6) are already equipped with an ICCU featuring an optimised design,' Hyundai Deutschland said in a statement.
At Kia, the measure covers eligible pre-facelift versions of the Kia EV6 and EV6 GT built before 15 June 2024, for which the company is also granting an extended ICCU warranty."
https://www.electrive.com/2026/04/17/hyundai-and-k...
I think this is now over here and we Genesis owners are hoping for the same. Mine went the day before the car went in for it's 3 year service (could still drive, just not AC charge). Someone on a US forum has noticed that the Genesis branded part has a new serial number so I am hoping mine has the new version installed.
Sensible. Although my GV60 was not affected, it's rare for someone to ask about any E-GMP (or even any Kia \ Hyundai) and not be told about the ICCU issue.
I'm not sure how widespread it is as a percentage of units sold, but they need to control the narrative and perception that all EGMP's are sat in workshops waiting for parts.
I'm not sure how widespread it is as a percentage of units sold, but they need to control the narrative and perception that all EGMP's are sat in workshops waiting for parts.
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