ICCU failed causing car to be unable to be charged. If driven any further it would have eventually stopped working.
2023 hyundai Ioniq 5 electrical problems
moderate 212 complaints filed with NHTSA · avg repair $850
Complaints
212
Recalls
0
Crashes
2
Avg fix
$850
What owners are reporting 13 most recent
I purchesed the Hyundai ionic 5 2023 from hyandai dealer ship. It had 42 k miles. The car ran good. So I got it. They promised me before the I bought they would charge it up free. When I signed the paper they said they couldn't charge it for me. I drove 5 miles the original battery died. I almost got to accudent only 5 miles away. I figured it was original battery. I change battery. I get tow truc…
While driving on a 45 mph speed limit road, there was a "pop" noise and then alarms on the dash display that power was limited and stop the car. The car's speed was severely limited to about 10 mph for a few seconds while I pulled the car over, and then the car died. Everything was electrically dead. I couldn't even turn on the hazard lights or lock or unlock the car. I took a video of the das…
I was sitting in my parked vehicle, which I had just turned on. It was cold so I turned on the seat warmer. About a minute later, I hear a pop and saw a “check electric vehicle system” warning on my dash, followed by an audible alarm and a new “stop vehicle and check power supply” warning on the dash. I decided to have the vehicle towed to my local Hyundai dealer.
I was driving the car 70 miles per hour in a highway. Car suddenly stopped and only go 5 mph. I was lucky no car behind me. If not I could be death today. I brought it to service and ICCU unit failed which is happened almost all Hyundai IONIQ 5. They replaced it with same ICCU and it will happen again. I think they want me to make an accident next time. This car is not safe to drive with this c…
We were driving our vehicle in a parking lot while on vacation and we got an error message “check electric vehicle system”. It then displayed the error message “stop safely and check power supply”. Four months ago, we had the same problem and had our 12 volt battery replaced and our ICCU updated. Our vehicle lost power while we were driving. We were able to drive the car safely to a hotel. But th…
Got "check electric vehicle system" warning message when backing into my parking space. Later, when I turned car on to leave, it went into limp mode in the parking lot. Had car towed to Lithia Hyundai of Reno. ICCU failure was determined.
My vehicle has experienced three separate failures of the Integrated Charging Control Unit (ICCU) and two separate 12-volt battery failures. All manufacturer recalls related to the ICCU have been completed. Each of these five events required towing and resulted in either an inability to start the vehicle, or a sudden loss of power while driving, including limp mode. During multiple events, the ve…
Intermittent Electrical / Brake failure . Put vehicle in reverse . Brakes failed to stop vehicle . Vehicle has had electrical issues before . Waring lights came on for steering and tire pressure in the past . Recall then came from Hyundai for the ICCU .45 minutes before the collision, the front collision warning came on when I was stopped at an intersection with no one in front of me . I sto…
This model has known issue. As I found after it occurred to my brand new IONIQ 5 . It has only 320mi. It had 87% battery and all of sudden it stop on road. No power on dashboard. After taking to service station they found “ "Inspected and found code P1A9096- DC/ DC converter input voltage sensor fail. Referenced campaign 997 for concern. With code present, per TSB, replace ICCU and fuse." This sa…
Common questions
How serious is the electrical problem on the 2023 hyundai Ioniq 5?
It's a documented issue but not catastrophic. 212 complaints have been filed. Repairs average $850 and most owners catch it before it causes a breakdown.
At what mileage does the electrical typically fail?
Mileage data is limited for this issue. Owners report failures across a wide range, suggesting cause is more about driving conditions and maintenance than mileage alone.
What does it cost to fix?
Independent shops typically charge around $850 for electrical repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to electrical?
No active recalls currently cover electrical issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Other problem areas on this vehicle
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Severity ratings are derived from reported crashes, fires, injuries, and fatalities.
Repair cost estimates are independent-shop national averages and may differ in your area.
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