2025 Hyundai Ioniq 5 · symptom sheet
Engine stalls or loses power while driving
- 44owner reports
- 5,500median miles
- 0involved a crash
Newest report Sep 8, 2026 · checked Oct 2, 2026
255 of the 297 complaints on this car are about the electrical system. 44 of those describe stalling. Only dead battery is reported more often on this car.
Tick what matches of 44 reports
Stalling on other Ioniq 5 years
Report counts are for each model year on its own, so a newer car has had less time to collect them. Model years with too few reports of it for a sheet: 2026.
What this problem usually is
Stalling reports are some of the most alarming on the site. The engine quits while the car is moving, sometimes on a highway and sometimes at a stop. Many owners say it restarted right away and the dealer found no stored code, which is part of why these complaints pile up before anything gets fixed.
What got replaced
Owners who name the part that was replaced mention the battery (21 reports).
Recalls and investigations
3 recalls on the electrical system cover the 2025 model year. A recall on the same system isn't always the same failure, so read the defect text.
The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit.
The high voltage battery system may contain an improperly tightened bus bar, which can cause a short-circuit.
The rear floor wiring harness may contain an open circuit, which can result in the rear side air bag not deploying as intended.
All 9 recalls on the 2025 Hyundai Ioniq 5, with the owner complaints on each recalled system
NHTSA investigations into the electrical system on the Ioniq 5
Electrical arcing and thermal events, potentially leading to fires, while utilizing enel x way usa, llc's juicebox residential charger.. Closed jun 5, 2025.
Loss of motive power. Closed apr 17, 2024, led to recall 24V-204.
Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.
None of these investigations covers the 2025 model year.
When it happens
The middle half of failures fell between 4,000 and 8,653 miles, from the 13 reports that gave a mileage.
What owners wrote
“Full electrical power system failure. Heard a loud pop noise emanating from under the rear seats of the car. The power. Failure lights came on and the car lost power. We were able to get the car to slowly drive back to the garage where it completely shut down and was inoperable from that point on. Car has been towed to the local dealer for diagnostics and repair.”
Filed Sep 8, 2026
“After hearing a sudden loud pop, my car lost all power. I was able to pull to the side of a busy 2 lane road. It was dangerous and scary to be stranded alone on a very busy road. The car had to be towed to the dealership. It took 48 days to replace the ICCU, fuses and the coolant. The service manager said this is a known issue.”
Filed Mar 19, 2026
“ICCU and fuse iccu and fuse p1a9096 error. Car had electrical warnings and lost power 2 miles from home with only 7000 on vehicle. Car was only able to go 10mph to get home. Parts on back order from Hyundai.”
Filed Mar 4, 2026
“ICCU FAILURE. Confirmed by dealer. Warning lights to check battery. Almost total loss of power. 4000 miles on the car. Service center has no estimate on when parts are available.”
Filed Feb 9, 2026 · 4,000 miles
Should you keep driving it?
This page can't tell you that. 0 of 44 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.
File your own report with NHTSA. Complaint counts are how a problem gets an investigation. How reports land on this sheet.
Guide Paid for this repair before a recall covered it? How recall reimbursement works
Other problems on this car
- Battery dies or the car will not start 91 reports
- Infotainment, screen or backup camera fails 39 reports
- Hybrid or EV system warning, loss of power 26 reports