2011 Hyundai Sonata Hybrid: engine overheating

Filed Apr 29, 2025 · Engine · 130,000 miles · VA

The contact owns a 2011 Hyundai Sonata. The contact stated that while driving on the highway at 60 MPH, there was smoke coming from the rear of the vehicle. The contact immediately pulled over to inspect the vehicle. Upon checking under the hood, the contact noticed that the coolant level was low. The contact attempted to restart the vehicle; however, the vehicle failed to start. The vehicle was towed to a dealer, where it was diagnosed, and the contact was advised that the engine had overheated and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 130,000.

Filed Apr 7, 2021 · Engine · 128,000 miles · GA · fire

Tl* the contact owns a 2011 hyundai sonata. The contact stated that on several occasions while driving at undisclosed speeds, the check engine and service engine soon warning lights illuminated and remained illuminated. The contact took the vehicle jim ellis hyundai atlanta (5785 peachtree blvd, atlanta, ga 30341) to be diagnosed on several occasions. The mechanic inspected the vehicle but could not determine the cause for the failure. The mechanic assured her that the vehicle was safe to drive. Several months later while driving 70 MPH, the service soon and check engine warning lights illuminated and the vehicle overheated. The vehicle stalled and would not restart. The vehicle was left at a nearby parking lot overnight. The following day she returned and restarted the vehicle however, while driving to take the vehicle to an independent mechanic, the vehicle overheated, stalled, with a hint of smoke coming from the engine compartment. The vehicle would not restart. The vehicle was towed to the independent mechanic where it remained for two days while the mechanic attempted to diagnose the vehicle. She was informed that the engine was blown and needed to be replaced. The contact stated that the vehicle was returned to the same dealer and she was informed by the service manager that she was responsible for the failure. The contact informed the service manager that the vehicle was included in the federal safety agency campaign number: 20v746000 (engine). The contact had notified the dealer for several months of the issues with the warning lights being illuminated and was informed that the vehicle was safe to drive. The contact stated that the same dealer performed a multi-point check on the vehicle prior to the failure, and she was informed that the vehicle was safe to be driven. The vehicle was not repaired. The manufacturer was contacted and informed of the failure. The approximate failure mileage was 128,000.

Filed Mar 11, 2021 · Engine · 82,000 miles · PA

Tl* the contact owns a 2011 hyundai sonata hybrid. The contact received notification of the federal safety agency campaign number: 20v746000 (engine). The contact stated that while driving 40 MPH, the vehicle stalled. The engine overheat message was displayed on the instrument panel. The vehicle was towed to the residence. The vehicle was then towed to conicelli hyundai (1208 ridge pike, conshohocken, pa 19428, (610) 624-2029) to be diagnosed. The contact was informed that there was thermostat blockage. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 82,000. Vin tool confirms parts not available.

Filed Jun 14, 2019 · Engine · 94,000 miles · AR

Tl* the contact owns a 2011 hyundai sonata hybrid. While driving 75 MPH with the cruise control engaged, the contact heard an abnormal noise. The contact stated that the vehicle began to decelerate and failed to accelerate when depressing the accelerator pedal. The contact parked the vehicle onto the side of the road and turned off the engine. The contact checked under the hood and noticed coolant leaking. The vehicle was not able to be driven and was towed to an independent mechanic. The contact called orr auto mall russellville (located at 3115 e main st, russellville, ar 72802, (877) 742-3331) and notified them of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified. The failure mileage was 94,000.

Filed May 4, 2017 · Acceleration, Brakes · 76,000 miles · FL

Charging system malfunctioned, sensors melted in valve trane, radiator elbow and fill neck blew off, complete engine failure and battery failure. I have had a problem with the "check brake" light and an alarm going off. However, when I stopped driving and had it towed to the dealership they could find nothing. Prior to this incident, I took a photo of my dash, I had 76,499 miles and the coolant meter did not read hot. I had had the coolant system flushed at 65,000 miles, and I had all oil and fluids checked again after this incident. The breakdown: three hours into a roadtrip, the A/C began blowing warm, simultaneously - the "the check brake" light and alarm came on, and the "check charging system" light came on. I lost power to accelerate (or brake well) and immediately pulled over and took a photo of my dash warnings (76919 miles). The heat sensor was in the "cool" half, the battery gage showed no power. Battery so low key would not start car. I had the car towed. "tech found that elbow and radiator have holes in them vehicle overheated causing engine to blow." tiffany richardson said "tech believe vehicle was driven with low coolant level causing vehicle to run hot melting sensors in the valve train and the pipes to fail." the tech is wrong, the coolant system was inspected and flushed at 65,000 miles, and was not due for another inspection. I had had coolant levels checked less than 1000 miles ago, and the heating sensor on dash did not read hot, at the point of breakdown or after a road trip 500 miles ago. Others had the problem at 3000 miles! It's the hpcu. The power for both electric motors is routed through hpcu. The inverters allow the A/C motors to be driven by d/c batteries. This caused the "check charging system" error. This is $15,000.00 and I owe $4000 on the car - 100,000 warranty has denied it & I am original owner.

Filed May 4, 2017 · Driver assistance, Electrical · 76,919 miles · FL

Charging system malfunctioned, sensors melted in valve trane, radiator elbow and fill neck blew off, complete engine failure and battery failure. I have had a problem with the "check brake" light and an alarm going off. However, when I stopped driving and had it towed to the dealership they could find nothing. Prior to this incident, I took a photo of my dash, I had 76,499 miles and the coolant meter did not read hot. I had had the coolant system flushed at 65,000 miles, and I had all oil and fluids checked again after this incident. The breakdown: three hours into a roadtrip, the A/C began blowing warm, simultaneously - the "the check brake" light and alarm came on, and the "check charging system" light came on. I lost power to accelerate (or brake well) and immediately pulled over and took a photo of my dash warnings (76919 miles). The heat sensor was in the "cool" half, the battery gage showed no power. Battery so low key would not start car. I had the car towed. "tech found that elbow and radiator have holes in them vehicle overheated causing engine to blow." tiffany richardson said "tech believe vehicle was driven with low coolant level causing vehicle to run hot melting sensors in the valve train and the pipes to fail." the tech is wrong, the coolant system was inspected and flushed at 65,000 miles, and was not due for another inspection. I had had coolant levels checked less than 1000 miles ago, and the heating sensor on dash did not read hot, at the point of breakdown or after a road trip 500 miles ago. Others had the problem at 3000 miles! It's the hpcu. The power for both electric motors is routed through hpcu. The inverters allow the A/C motors to be driven by d/c batteries. This caused the "check charging system" error. $15,000.00 fix. I owe $4000. 100,000 warranty has denied it & I am original owner. Hpcu recalled b4? .

Filed May 4, 2017 · Airbags, Driver assistance · 76,919 miles · FL

Charging system malfunctioned, sensors melted in valve trane, radiator elbow and fill neck blew off, complete engine failure and battery failure. I have had a problem with the "check brake" light and an alarm going off. However, when I stopped driving and had it towed to the dealership they could find nothing. Prior to this incident, I took a photo of my dash, I had 76,499 miles and the coolant meter did not read hot. I had had the coolant system flushed at 65,000 miles, and I had all oil and fluids checked again after this incident. The breakdown: three hours into a roadtrip, the A/C began blowing warm, simultaneously - the "the check brake" light and alarm came on, and the "check charging system" light came on. I lost power to accelerate (or brake well) and immediately pulled over and took a photo of my dash warnings (76919 miles). The heat sensor was in the "cool" half, the battery gage showed no power. Battery so low key would not start car. I had the car towed. "tech found that elbow and radiator have holes in them vehicle overheated causing engine to blow." tiffany richardson said "tech believe vehicle was driven with low coolant level causing vehicle to run hot melting sensors in the valve train and the pipes to fail." the tech is wrong, the coolant system was inspected and flushed at 65,000 miles, and was not due for another inspection. I had had coolant levels checked less than 1000 miles ago, and the heating sensor on dash did not read hot, at the point of breakdown or after a road trip 500 miles ago. Others had the problem at 3000 miles! It's the hpcu. The power for both electric motors is routed through hpcu. The inverters allow the A/C motors to be driven by d/c batteries. This caused "check charging system" error. This is $15,000.00 and I owe $4000 on the car - 100,000 warranty has denied it & I am original owner. Airbag to