Hyundai Ioniq Hybrid check engine light comes on

Filed Aug 31, 2026 · Electrical, Transmission · GA · fire · 1 injury

I was driving my two young daughters (ages [XXX] and [XXX]) to school, in clear conditions, when we suddenly heard a static-like noise. Instantly, the car's check engine light and check EV battery light came on, and I realized I could no longer accelerate. I immediately pulled off to a safe shoulder and turned the car off and then back on. The car would not move. I exited the vehicle and THANKFULLY left my car door open. I walked around the vehicle and immediately called my husband for help. Within seconds, my [XXX] daughter, who was sitting directly behind me in the rear driver's seat, told me she saw smoke. I went to open her door and realized it was locked. My key fob and door lock would not unlock her door. I reached through my seat to open her door and instantly saw the smoke coming from a vent just to the left of her legs. I unbuckled her and pulled her out, and climbed through the vehicle to get my [XXX] unbuckled and safely out of the vehicle. I cannot stress enough how grateful I am that my car door was left open because I don't believe I would have been able to break the glass to get my daughters out. The could have easily died. Within a minute of the smoke starting from my daughter's vent, the flames began from the same vent. I got both daughters away from the vehicle asap. While trying to grab what I could from the vehicle, my fires on my right hand were caught in the fire. The vehicle became fully engulfed in fire and was a total loss. Two volunteer fire departments responded. I have both the fire incident report as well as the police incident report. The police report only mentioned one daughter but witnesses can attest that I had to get BOTH daughters out. Following the incident, I went to the doctor to receive care for my burns and received a chest x-ray due to smoke inhalation. My [XXX] daughter has been traumatized and keeps thinking something is wrong with her. She told me her bottom felt very warm just before I pulled her out. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMA

Filed Sep 6, 2025 · Engine, Transmission · PA

Engine failure occurred on interstate. Car was jerking and smoke coming from the hood and exhaust while engine was giving out. Hyundai dealership confirmed something blew up within the engine and blew a hole out the side of it. Check engine light came on about 2 weeks prior notified Hyundai dealership as soon as this happened and they stated I had to wait 2 weeks to have the vehicle checked out.

Filed May 8, 2025 · Engine · 73,020 miles · FL

The contact owns a 2021 Hyundai Ioniq Hybrid. The contact stated that upon depressing the accelerator pedal, there was an abnormal ratting sound coming from the vehicle, and the vehicle failed to accelerate as needed. The contact stated that the check engine and oil warning lights were illuminated on the instrument panel. The vehicle was taken to a dealer where the vehicle was diagnosed with connecting rod bearing failure. The contact was then provided an estimate for an engine replacement. The manufacturer was also notified of the failure and the contact was provided a case number. The vehicle remained in the possession of the dealer and was not yet repaired. The failure mileage was 73,020.

Filed Aug 12, 2024 · Fuel system · 140,000 miles · TX

The contact owns a 2017 Hyundai Ioniq Hybrid. The contact stated while driving 20 MPH, the check engine warning light illuminated. The vehicle lurched forward and then stalled. The contact was able to pull over to the side of the road. The vehicle failed to restart and was towed to an independent mechanic, where it was diagnosed that the main power relay assembly had overheated, and the main power relay fuse was blown. The mechanic determined that the main power relay assembly and the fuse needed to be replaced. The mechanic determined that the failure was related to the federal safety agency Campaign Number: 22V459000 (Hybrid Propulsion System). The vehicle was then towed to the dealer for the recall repair; however, the dealer informed the contact that the recall repair was not necessary, and that the picture of the main power relay part would be sent to the manufacturer. The manufacturer was notified of the failure and a case was opened. The manufacturer contacted the dealer regarding the recall repair. The dealer then informed the contact that the recall repair was performed per the manufacturer's instructions. The contact was later informed by the dealer that the recall repair had not been performed and only the picture of the main power relay part had been sent to the manufacturer. The manufacturer was contacted and informed the contact that they had not received a proof of the service that the dealer had performed on the vehicle. The vehicle was towed back to the independent mechanic, where it was confirmed that the recall repair had not been performed on the vehicle. The mechanic informed the contact that the failure was related to the federal safety agency Campaign Number: 22V459000 (Hybrid Propulsion System). The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure. The failure mileage was approximately 140,000. Parts distribution disconnect.

Filed Apr 8, 2024 · Engine · CA

The car engine started to stall, the engine light came on and advised me to shut off engine then I pulled over and smoke immidiatley filled the cabin and outside the hood. My engine could have blown up. Had I not pulled over so quickly my car would have caught fire and I would have died. Yes the Hyundai Folsom inspected the car and listed issue was a hole in the engine block. They stated it was caused by premature wearing of the rod bearings and refused to repair. The ONLY warning happened within seconds of the car stalling and failing to accelerate before I pulled over. The first symptoms was a noise I couldne place 5 days prior. It was a mild knocking sound that was subtle.

Filed Oct 25, 2023 · Driver assistance · 37,859 miles · WA · crash

The contact owns a 2020 Hyundai Ioniq. The contact stated that while driving 70 MPH with the adaptive cruise control and lane keep assist features activated, the check engine warning light suddenly illuminated and the steering wheel seized causing the driver to lose control of the steering and the vehicle crashed into a concrete barrier. After restarting the vehicle, the check engine warning light was no longer illuminated and the vehicle operated as normal. No injuries were reported and no police report was taken. The cause of the failure was not determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 37,859.

Filed Jul 31, 2023 · Acceleration, Fuel system · TX

What component of system failed or malfunctioned? Sudden deceleration, not sure what system this is a part of. Is it available for inspection upon request? No, I don't know what is causing the problem so have not been able to have the specific system looked at. How was your safety or the safety of others put at risk? I have been driving on the highway and experienced sudden deceleration of the vehicle multiple times over the past four years. Not being able to control deceleration puts me and the people around me at risk for collision. I am also at risk of being stranded far from home where assistance may not be readily available. Has the vehicle or component been inspected by the manufacturer, policy, insurance representative or others? Yes, by four separate dealerships. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? Check engine light came on shortly after deceleration, battery power could then be seen at a critical low.

Filed Jul 12, 2023 · Brakes, Driver assistance · CA

While driving, the adaptive cruise control will randomly become disabled and 3 lights pop on: EPB, Auto Hold, and check engine (triangle with ! In the middle). Check engine light will turn off if ACC is turned of entirely. Problem will persist as long as car is on. Once turned off and restarted it will stay off for a while and then come back on. Stays off longer when car has an overnight break but other times it will happen as soon as it's turned on. Cruise control will not work when this issue appears. Picture shows milage but that was May 31st 2023, not the 1st time back in November, 2022. It happened the 1st time after a drive from Lancaster, CA to Pheonix, AZ on the return (about half way)

Filed Oct 25, 2021 · Electrical · IL

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. I haven’t received any updates from them. 10/21/21 - the GM called me. So I went to the talk with him. He said the cost to fix my car about $5,000. I have to pay for in order to fix it because my warranty not cover for the break. I wondered why I have to pay even though it wasn’t my false. I brought this car and used it not over 3 months. Hyundai should take responsibility for the fixing cost not me. So I denied to pay. Then he left and brought me my car key and said my car was outside. Then I went out from the showroom and found out that the car he brought wasn’t mine. The car he brought is white color but mine is grey. So I checked on the white car and found out that the car was show the auto hold engine light with the same as my problem. So I guess I’m not the only one that had this problem even though I asked them earlier that has anyone had the same problem as mine and they said no and insisted that my car was the only one that have this problem. 5 minutes later, the GM came back with my actual car. And I end up the day by got my car back with the auto hold engine light still on. The GM didn’t care about this issue. He didn’t care about customer’s life and seem to care about the circulation more than fixing problem after sale service. Now I still wondering why the factory keep producing the car model even though i found a lot of consumer complaint about it.

Filed Feb 27, 2018 · Transmission · 1,770 miles · CA

As I was driving home from work, my vehicle jerked a couple of times and was speeding up and slowing down by itself. As I was driving the check engine light appeared and did not go away at all. Although, my car was accelerating and slowing down by itself, it was struggling to go past 20mph. When I got home and parked my car, I was unable to reverse my car, even though it was in reverse. Luckily, there was no one behind me or in front of me or else I'm sure there would've been a crash. On top of this, the car has only 1700miles on it and was barely 3months old and this problem appeared, I'm super disappointed and the company hasn't even told me what was wrong with the car yet.