2011 HYUNDAI SONATA Complaints

I almost got into an accident on the highway with my family when returning home with my family my car started to sputter and the check engine light started blinking the car wouldnt accelerate on the highway almost got into an accident with a truck. my family and i was terrified. i took it to autozone they notified me its an problem with my engine, rod bearings, the representative ,informed me alot of sonatas have came in with the same issue. that occurance reminded me on the letter i received few months back informing me on a national recall. I truly need assistance fixing my car ive lost days from work due to my transportation not working properly. Please help

The contact called on behalf of her son who owns a 2011 Hyundai Sonata. The contact stated that the vehicle would intermittently stall and shut-off with the check engine warning light illuminated. Due to the failure, the contact had the vehicle towed on multiple occasions to an independent mechanic who topped off the fluids however, the mechanic was unable to determine the cause of the failure. The vehicle was then taken to a dealer and the contact was informed that the fuel pump needed to be replaced. Upon investigation, the contact linked the failure to NHTSA campaign number: 18V934000 (Engine, Fuel System, Gasoline) however, the Vin was not included. The contact also stated that the vehicle would run hot as the temperature gauge would indicate a rise in engine temperature. Additionally, the contact stated the vehicle failed to start up after several attempts. The manufacturer was not notified of the failure. The vehicle was not repaired. The failure mileage was unknown.

Without warning, the Sonata stalls while in motion: - the brake pedal goes close to the floor, - the CHECK BRAKE light goes on, - the emergency brake audio alarm and light go on, - the READY light between the fuel and temperature gauges blinks. I have to pull over and turn the car off / on in order to get the car functional again. The speed of the car doesn't seem to matter. This has occurred 11 times over the past year, including 6 times today (7/22/2021) within a span of 15 min, while at speeds between 30- 60 mph. I took the car to the dealer (initially on 6/22/2021). There were no diagnostic error codes and they could not reproduce the problem. I called Hyundai, both on 6/22/2021 and today, to file a report. Hyundai did not provide any insights into the issue. Online, I have read of others having this same issue with Sonatas. Some believe a faulty power brake booster to be the cause.

I was on the on ramp of the freeway with the closest vehicle several hundred yards in front and no vehicles behind or on the side of me when my sunroof "exploded". Fortunately the curtain was drawn so no glass poured in the vehicle, but when I pulled over half the sunroof was gone and the remainder in shredded. I do no believe anything struck the vehicle.

Unknown Rear taillight out, but unable to replace bulb because something melted. Making it impossible to simply change the bulb with replacing the whole unit/light. Rear stoplight keeps going out

The air bag light will not go off. I have seen lots of complaints about this same issue.

Was driving on city streets, stopped in traffic for red light. The engine caught on fire. No warning, everything seemed fine up to that point.

The contact owns a 2011 Hyundai Sonata. The contact stated while driving 55 mph, the loss motive power and failed to accelerate. The contact stated that there was no warning light illuminated. The contact continued driving to his destination. The contact took the vehicle to the local dealer and it was diagnosed with needing the water pump and belt tensioner to be replaced. The vehicle was repaired however, the failure recurred. The manufacturer had not been informed of the failure. The failure mileage was approximately 112,000.

The contact owns a 2011 Hyundai Sonata. The contact stated while driving 35 mph, there was an abnormal knocking sound coming from the vehicle. The contact pulled into a service station, checked the engine oil level, and topped off the engine oil. Later that day the contact started the vehicle and drove to his brother’s residence and heard the loud knocking sound coming from the vehicle. The vehicle shuddered. The vehicle remained parked at his brother’s residence. There was no warning light illuminated. The vehicle was not diagnosed nor repaired. The manufacture was not made aware of the failure. The failure mileage was 120,315.

Headlights have burnt out 4 times in 1 year w/install, break/tail lights have burnt out 6 times in 1 year w/ install. Cruise control isn't staying set and airbag light is on unknown reason after OBD scan. Break lights have burnt thru the connection piece, causing damage, overpower from the wiring harness has caused over load of power which caused lights to burn out and even burst. Multiple drivers with similar problems, airbag may still deploy for no reason or not deploy at all. Cruise control malfunction possibly due to airbag issues, but may also be from faulty wiring throughout the vehicle and ultimately into the sterring console. Computer or motherboard may also now have damages cause by over amped volts of electricity without a serge protecter. Possibility of electrical damages, caused by overload from power supply and directed throught the vehicle may have cause exponential damages to electrical in the sonata. Causing a serious safety concern and hazard. Exterior lighting requires new wiring harnesses and connection pieces as well as new casing from over amp overload, resulting in overheating and bulb combustion damages. New airbag assembly is probable and reset of mother board with upgraded features and completely new wiring with serge protection is necessary.