NHTSA Complaint #11709823 — 2025 HYUNDAI IONIQ 5
ENGINE issue reported to NHTSA
Complaint Details
| ODI Number | 11709823 |
| Vehicle | 2025 HYUNDAI IONIQ 5 |
| Component | ENGINE |
| Date of Incident | |
| Date Filed | |
| Mileage | N/A miles |
| Crash | No |
| Fire | No |
| Injuries | 0 |
| Deaths | 0 |
| Vehicle Towed | No |
| State | CA |
Consumer Description
I was driving on the CA 405 SB, Long Beach, at about 6 PM 9/19/25. All of a sudden this loud screeching noise started. It was so loud that I pulled off on the left shoulder instead of driving to the first exit. I assumed I was going to find something wrapped around an axle or wheel or dragging from the ground. There was nothing hanging from the car, so I got back onto the freeway and parking the car ASAP did a more thorough inspection of the car. I got on my hands and knees looked with a the flashlight And saw nothing. I got online and found Hyundai TSB 25-01-056H explaining that IONIQ 5 built between 12.03.24 - 3.25.25 are missing a wave washer that can cause the MGDU housing to make noise. And the MGDU needs to be replaced. I should take it to a dealer to get it fixed. I left a message with the service dept at Kearny Mesa Hyundai, where I'd leased the car on June 2, 2025. I left a VM with the Service Dept requesting an appointment and the screeching noise is my car. I made a number of recordings of the noise so I could easily provide it later. The noise stopped when I got off the freeway and hadnt started again. When I took it in on 9.22.25. They said I would have to leave the car for at least two weeks before they could look at it. They wouldn't provide a loaner because my car was built in APR/2025 after 3.25.25. The SA suggested I try another dealer for faster service. I took it to Pedder Hyundai on 9.24.25. They kept it all day and "verified the complaint." My window was not fully up. I told them that this is absurd. I was told the dealer needs to verify the noise to get it fixed under warranty. On 10.19 the noise started I made more recordings & drove it straight to the dealer. They couldnt get someone to go for a ride and had to get appnt and bring it back. I took it in on 10.21 while driving there, and the noise returned. I called the Serv Rep. He heard it clearly How can I send you the recordings of the noise?
Related Complaints for the 2025 HYUNDAI IONIQ 5
Other ENGINE Complaints
#11717485
The ICCU (Integrated charging control unit) failed, causing my car to go into "Limp mode" where it was unable to acce...
#11715638
On [XXX], the vehicle was unable to be started - no lights, no power, unable to open the doors. I called Hyundai Road...
#11713461
ICCU FAILURE. Went to start vehicle (at full charge) and warning light came on "Check Battery Health". Wouldn't mov...
#11710985
The diagnostic trouble code (DTC) P1A9096 in a Hyundai Ioniq 5 indicates a "DC/DC Converter Input Voltage Sensor Faul...
#11710708
On [XXX] my Ioniq 5 stopped operating. It was totally dead. Could not be jumped. Car was towed to the dealership wher...
Recent Complaints for the 2025 HYUNDAI IONIQ 5
#11719702
ELECTRICAL SYSTEM
The ICCU (integrated charging control unit) failed on the vehicle, which resulted in the vehicle not being able to ch...
#11719702
FUEL/PROPULSION SYSTEM
The ICCU (integrated charging control unit) failed on the vehicle, which resulted in the vehicle not being able to ch...
#11719627
ELECTRICAL SYSTEM
The ICCU component failed on me at 4,356 miles. Heard a pop with the car and then the dash started displaying electri...
#11719627
UNKNOWN OR OTHER
The ICCU component failed on me at 4,356 miles. Heard a pop with the car and then the dash started displaying electri...
#11719025
ELECTRICAL SYSTEM
''Stop vehicle and check power supply'' At this point I heard a pop sound and the car died. The dealer said this is a...