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Electrical systemPart report

2023 Hyundai Ioniq 5 Electrical system Problems

Complaints
273about this part
Share
70%of 388 total for the year
Median mileage
16,154miles
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.

NHTSA recorded 273 complaints about the electrical system of the 2023 Hyundai Ioniq 5, 70% of the 388 complaints for this model year. Where a mileage was given, the median is 16,154 miles. 5 of these say a crash was involved and 2 a fire, according to the filers. 3 recall campaigns on record are filed under a similar system.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“On December 23, 2025 while driving at 50 mph the car displayed an electrical warning and would not let me drive more than 40 mph. When I drove it to the dealer on December 27 (because the dealer said I had to wait until after Christmas ) it would not go over 20 mph. The vehicle has been at the dealer awaiting an ICCU part since December 27, 2025. Over 50 days!”

NHTSA complaint #11718203, filed 2026-02

“While driving my 2023 Ioniq5 I got a warning on the dashboard about losing power and immedately the car slowed itself down to about 15 MPH, once I was able to get to a safe spot to pull over I stopped the car and it would not start again. I had it towed to the dealer and it has been a week and the ICCU is still on backorder. No idea when I will have the car back.”

NHTSA complaint #11713769, filed 2026-01

“Upon attempting to merge onto a highway, the vehicle lost acceleration and a warning message appeared on the dash stating Stop vehicle and check electrical system . Car speed was limited to 28 mph. I was able to exit and get the car to the dealership. This was on January 29th, 2025. Car was finally returned to me with a new ICCU on March 19th, 2025.”

NHTSA complaint #11649439, filed 2025-03

“ICCU failure at just 10k miles. Was driving, car kind of jolted and warning came on screen saying check electric vehicle system then warning said stop vehicle, check power supply. So I limped to a stop and got a tow. It sounds like an increasingly prevalent issue even though my specific VIN did not have an open recall. Does not sound like Hyundai is taking this seriously.”

NHTSA complaint #11708885, filed 2026-01

“My wife was driving our Ioniq 5 on the freeway. She received a message on the dash about the electrical system (probably ICCU failure), and then the car limited itself ( turtle mode ) so that the max speed was 20mph. A minute or two later it slowed down even further to 10mph. She was able to get off the freeway safely.”

NHTSA complaint #11721603, filed 2026-03

Related recalls

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
20261346%
202522876%
202417979%
202327370%
202230775%

Other parts of the 2023 Hyundai Ioniq 5

Transmission and drivetrain
72 complaintsFuel system
67 complaintsOther or unknown
44 complaintsEngine
38 complaintsForward collision avoidance
26 complaintsBrakes
24 complaintsVehicle speed control
18 complaintsLane departure
9 complaintsExterior lighting
8 complaintsTires
6 complaintsSteering
4 complaintsBody and structure
4 complaints

← All problems reported for the 2023 Hyundai Ioniq 5

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology