Hyundai Motor Group is expanding warranty coverage for a known issue affecting some of its electric vehicles, offering additional reassurance to owners as it continues working toward a long-term fix.
The problem centers on the Integrated Charging Control Unit (ICCU), a component used in Hyundai and Kia models built on the E-GMP electric platform. In rare cases—estimated at around 1% of vehicles—the fault can lead to a loss of power. That can prevent a car from starting or, more concerningly, leave drivers stranded mid-drive.
While the issue is not widespread, it has proven frustrating for affected owners. Some have reported long wait times for repairs, while others have experienced repeat failures even after replacement parts were installed.
Hyundai has already attempted to address the issue through recalls and software updates. These measures aim to reduce voltage spikes that can blow a fuse during 12-volt battery charging, which appears to be a key trigger behind the failures.
But the fixes have not fully resolved the problem.
In response, Hyundai Motor America is now extending warranty coverage for the ICCU to 15 years or 180,000 miles, whichever comes first. This builds on the company’s existing 10-year, 100,000-mile powertrain warranty, effectively adding five more years and 80,000 miles of protection specifically for this component.
The extended coverage comes at no cost to customers and applies to affected electric models in the U.S. Owners experiencing warning lights, reduced power, or charging issues are encouraged to contact dealerships for inspection and support. Hyundai has also provided an online tool for customers to check their vehicle’s eligibility using a VIN lookup.
The move suggests Hyundai is taking a longer-term view of the issue, acknowledging that a complete technical solution may still be in progress.
There are signs the policy could expand beyond the U.S. Similar warranty updates have already appeared in Germany, indicating a broader global response may be underway.
Kia, which shares the same E-GMP platform, is expected to follow with a comparable program. The company says details will be communicated to EV6 owners and dealers soon, though specifics have not yet been finalized.
Warranty extensions of this scale are relatively uncommon and typically signal that an automaker is prioritizing customer confidence while continuing to refine a fix. In the competitive EV market—where reliability concerns can influence buying decisions—such measures can help maintain trust even when technical challenges persist.
Takeaway: Hyundai’s extended ICCU warranty reflects an ongoing effort to manage a rare but impactful EV issue, offering long-term coverage while the company works toward a more permanent solution.
