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Electrical systemPart report

2021 Hyundai Ioniq Hybrid Electrical system Problems

Complaints
7about this part
Share
54%of 13 total for the year
Median mileage
10,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 7 complaints about the electrical system of the 2021 Hyundai Ioniq Hybrid, 54% of the 13 complaints for this model year. Where a mileage was given, the median is 10,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

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

“Two different scenarios with this cruise control are problems with this vehicle. When it is raining the system with the cruise control does not work and the shop told me it happens with other vehicles. A warning light appears when this happens. This last time it was not raining and the cruise control quit working and the warning light came on as well as another system warning light. I showed the picture to the guy at the shop and he said after I showed him the picture he knew what to do, he had to reset the system. Yes, it’s available for inspection. …”

NHTSA complaint #11466017, filed 2022-05

“06/08/21 first day I brought my new car Hyundai Ioniq 2021 model at Hyundai Lincolnwood. After use the car about 2 months, the engine light has been showing up that something wrong about the auto hold and EPB. So I made an appointment for inspect in the next day. 09/21/21 - they were called to let me know that the car had been fixed and it was ready to pick up. So I went to pick up around 3.00p.m. after checked my car and about to leave the dealership, the auto hold engine light was show up again. So I had to take my car back to fix it. After have been waiting my car to fix about 2 months. …”

NHTSA complaint #11438067, filed 2021-10

“The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that while driving at various highway speeds, the electronic parking brake and auto hold indicator lights erroneously activated. The cause of the failure was not yet determined. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not yet contacted. The VIN was not available. The failure mileage was 16,000.”

NHTSA complaint #11541595, filed 2023-08, 16,000 miles

“I’m driving with cruise control on the highway at 65 and all of a sudden it shuts off. The check cruise system light comes on along with a triangle with an exclamation point in the middle of it in the lower left side of dashboard and the letters EPB lights up on the lower right side of dashboard.”

NHTSA complaint #11536725, filed 2023-08

“The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that upon starting the vehicle, the auto-hold warning light would illuminate on the instrument panel. The contact had taken the vehicle to a dealer however, the mechanic was unable to determine the cause of the failure. The contact was informed that he had to pay a diagnostic fee to service the vehicle. The manufacturer was notified of the failure and referred him to another dealer for assistance. The vehicle was not repaired. The failure mileage was approximately 4,000.”

NHTSA complaint #11439759, filed 2021-11, 4,000 miles

Related service bulletins

Electrical system: other model years

YearComplaintsShare of year
2022729%
2021754%
2020635%
2019425%
2018323%
20171536%

Other parts of the 2021 Hyundai Ioniq Hybrid

Brakes
3 complaintsForward collision avoidance
3 complaintsOther or unknown
3 complaintsVehicle speed control
2 complaintsBack-over prevention (rear camera)
1 complaintsEngine
1 complaints

← All problems reported for the 2021 Hyundai Ioniq Hybrid

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