2022 Hyundai Ioniq 5 Fuel System Problems

Your car's charging system (ICCU) stopped working without any warning lights or error messages, leaving you unable to charge using Level 2 charging 300 miles from home. While Level 3 fast charging still worked, this component can also affect the car's ability to drive if it fails completely. Your dealership replaced the ICCU to resolve the issue.

Your car's integrated circuit control unit (ICCU) failed, causing a fuse to blow and putting your vehicle into low power mode while you were driving. You were able to safely pull over and have the car towed to a dealership for repairs. The fix will likely involve replacing the ICCU fuse and potentially the control unit itself if it's damaged.

ICCU failed at ~27,000 miles. Loud pop came from the under the vehicle. Afterwards, car could only accelerate to 35 MPH.

The ICCU on this vehicle has been replaced twice, 10/25 and 1/26. The failure of the unit on stopped any movement of the car,leaving me stranded on busy highways. I have had all software updates performed prior to these failures

ICCU failed and my car will not charge. The dealer has diagnosed this issue. Parts are not available to fix this issue.

Battery conditioning (heating) is required for fast charging at cold temperatures.

The ICCU broke and the associated fuse blew. The car would only go about 25 MPH. It told me to stop driving.

Charge port on vehicle overheats when charging on AC charger and stops charging. Anything above 32 amps. The car is supposed to handle 48 amps.

When starting the vehicle I received an error that said "Check Electric Vehicle System". The vehicle seemed to be working fine at slow speeds in the parking lot at work. When I exited onto a city street I realized I had lost normal acceleration and could not go above 25mph.

Recently - my car has been encountering an issue and it has been slowly getting worse and worse. I have a 40 amp Level 2 charger I frequently use to charge my car. I first noticed it a few weeks ago, where my car seemingly stopped charging for no reason.

Level 2 charging fails on warm days if charging above 9kw. I am unable to charge my car on days above 80-90 degrees using my 9.6kw (40 amp) Level 2 charger, as the cars internal will get so hot to the point where it overheats, and force stops charging. Occasionally, I will come back to my car while charging and find it's charging at a much lower speed then it should be.

The car randomly stops charging when plugged into either of my Level 2 home Juicebox 40 chargers before it reaches capacity, generally after adding another 4-8% to the battery. It was impossible for me to fully charge the car without plugging it in multiple times.

Car cannot be charged

Driving on the highway the car entered limp mode allowing only 30 MPH. Messages "stop vehicle and check power supply" with 12V battery indicator. Classic ICCU failure.

The car suddenly cut speed to 20mph while traveling at around 40mph. No matter how hard I pressed on the accelerator, it did not go over over 20mph. The dashboard also said speed limited to 20mph.