Hyundai, Kia & Genesis ICCU Failure: Your California Lemon Law Rights

If your Hyundai, Kia, or Genesis EV has flashed a "Power Limited" warning, lost power while driving, or left you stranded, you're likely dealing with the Integrated Charging Control Unit (ICCU) defect — one of the most widely reported electric-vehicle problems on the shared E-GMP platform. Here's what the ICCU is, why it fails, which models are affected, and when a failure makes your EV a California lemon.

What the ICCU is and why it fails

The Integrated Charging Control Unit (ICCU) manages DC fast charging and AC charging and keeps the 12-volt battery charged. On the E-GMP platform shared by Hyundai, Kia, and Genesis EVs, the ICCU can fail from overvoltage at the start and end of the 12-volt charging cycle and from thermal loading during charging or driving. Once it fails, the vehicle can no longer keep its 12-volt system charged.

The symptoms

• A "Power Limited" warning on the instrument cluster.
• A gradual — then total — loss of drive power, sometimes at highway speed, until the vehicle can no longer move (a tow-truck situation).
• The 12-volt battery draining or not charging, causing no-start conditions.
• Failure to charge on AC or DC fast chargers.

Which vehicles are affected

The ICCU defect spans the E-GMP lineup, including the 2022–2024 Hyundai Ioniq 5, 2023–2025 Hyundai Ioniq 6, 2022–2024 Kia EV6, 2023–2025 Genesis Electrified GV70, 2023–2025 Genesis GV60, and 2023–2025 Genesis Electrified G80. Hyundai and Genesis vehicles were recalled under NHTSA campaign 24V204, and Kia under 24V200, to inspect and replace the ICCU and its fuse as needed and update the software. The defect has also drawn owner lawsuits over sudden power loss.

When an ICCU failure becomes a lemon

A recall is the manufacturer acknowledging a defect and offering a free fix — it isn't automatically a lemon. But an ICCU failure that causes a loss of drive power is a serious safety defect, which California treats more seriously and which requires fewer failed repair attempts to qualify. If the recall repair doesn't resolve the problem, the failure keeps recurring, or your EV is out of service for an extended time (30 or more cumulative days, or waiting on backordered parts), California's Lemon Law may entitle you to a buyback, replacement, or cash settlement — with the manufacturer paying your attorney fees.

What to do

Have the ICCU recall repair performed, keep every repair order, and note each date your vehicle was in the shop or unusable. If the problem returns or parts are backordered for weeks, get a free case review to find out whether your Ioniq 5, EV6, GV70, or other affected EV qualifies as a California lemon.