2023 Hyundai Ioniq 5 Fuel System Problems

Your Ioniq 5's Integrated Charging Control Unit (ICCU) may fail without warning, causing dashboard warnings like 'Check vehicle electrical system' and 'Pull over safely' that force you to stop driving immediately. This left one owner stranded and unable to drive home. The dealer reports this is a widespread problem affecting multiple Ioniq 5s and may require replacement of the ICCU unit, which Hyundai says has been redesigned in newer parts.

ICCU failure, stranded wife and kids in the Minnesota cold. This issue is not fixed.

June 2023 - 12 volt battery discharged overnight on consecutive nights. Dealer service eventually claimed that the problem was the navigation head unit was faulty and continued to draw current after the vehicle was turned off. The process took over 4 weeks to remedy since the necessary part was unavailable.

We had the Internal Charge Control Unit replaced due to a warranty recall a couple years ago and it failed again on Dec. The car has been at the dealer ever since, waiting for a replacement ICCU. The car refuses to charge and the dealer has diagnosed the issue as a faulty ICCU.

Vehicle's charging port appears to be overheating to the point that thermal throttling is occurring when attempting to charge. This issue first occurred in mid-May of 2024. Vehicle charged as normal before then.

The ICCU has failed after the recall repair was completed in September 2023. When the fuse pops the car indicates a check electric vehicle system message in the driver information screen.

The iccu failed causing the vehicle to suddenly go into limp mode

Latest recall had been applied, 2 weeks later a dead 12V. New one put in and 4 weeks later a pop and an immediate pull over vehicle charging system needs inspected. ICCU failure.

Cruise control became disabled and then unable to accelerate when pressing down on accelerator