2024 Hyundai Ioniq 5 · symptom sheet
Battery dies or the car will not start
- 59owner reports
- 9,240median miles
- 1involved a crash
Newest report Aug 19, 2026 · checked Oct 2, 2026
176 of the 222 complaints on this car are about the electrical system. 59 of those describe dead battery, which makes it the most reported problem on the 2024 Ioniq 5.
Tick what matches of 59 reports
Dead battery 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
These owners walk out to a car that's dead. Some find it drained after sitting only a day or two, some need a jump start every week, and some have had the battery replaced more than once without the problem going away. A good number describe the dealer testing the battery, calling it fine, and sending them home.
What got replaced
Owners who name the part that was replaced mention the battery (52 reports).
Recalls and investigations
3 recalls on the electrical system cover the 2024 model year. A recall on the same system isn't always the same failure, so read the defect text.
The high voltage battery cells may contain misaligned electrodes, which can lead to a fire while parked or driving.
The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-volt battery, which can result in a loss of drive power.
The Integrated Charging Control Unit (ICCU) may become damaged and stop charging the 12-Volt battery, which can result in a loss of drive power.
All 3 recalls on the 2024 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.
When it happens
The middle half of failures fell between 6,200 and 10,714 miles, from the 9 reports that gave a mileage.
Is this a known problem?
The manufacturer has sent NHTSA 1 service bulletin or notice for the 2024 Hyundai Ioniq 5 that deal with this problem. Newest first.
Federal rules make a manufacturer send NHTSA a copy of any notice about a defect that goes to more than one dealer or owner. Most of these are service bulletins, the repair instructions manufacturers send to dealers. NHTSA generally leaves safety recall bulletins out of this file, and recalls are listed separately.
Certain 2022-2024MY IONIQ 5 (NE EV) and 2023-2025MY IONIQ 6 (CE EV) vehicles may exhibit a condition while driving where the 12V battery voltage drops below the operational voltage and the Vehicle Control Unit (VCU) places the vehicle in “fail-safe” mode.
What owners wrote
“ICCU failure, which made the car stop dead in the road with no way to move it because the car shifts into Park when powered down (there is no way to shift into Neutral without power).”
Filed Feb 23, 2026
“âCheck EV Systemâ error appeared in a red circle, with a red 12v battery icon. Then a turtle icon appeared and the car would not exceed about 30 mph. I was able to drive a mile and park in a lot. This happened after Level 2 charging to 100% and then driving one mile in 25° weather. The car was towed to the dealer.”
Filed Feb 13, 2026
“Battery light came on and car stopped after about 1 miles in the middle of the road. ICCU failure was the cause as determined at the dealer.”
Filed Feb 4, 2026
“The 12v battery system failed in November 2025. Battery was replaced by dealer. Then on February 2, 2026 the ICCU failed while driving. Complete and unsafe loss of power while driving.”
Filed Feb 3, 2026
Should you keep driving it?
This page can't tell you that. 1 of 59 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
- Engine stalls or loses power while driving 47 reports
- Infotainment, screen or backup camera fails 34 reports