NHTSA Complaint #11452463 — 2016 HYUNDAI SONATA HYBRID

The contact owns a 2016 Hyundai Sonata Hybrid. The contact stated while driving 50 MPH, the vehicle started to violently shake and lose power while being powered by the engine. The contact stated the accelerator pedal was released and the shaking stopped as the vehicle switched to being powered by the battery. The contact stated as the vehicle was a hybrid vehicle the switch between using the engine and battery was done automatically when the accelerator pedal was released. The contact also stated that an abnormal noise was coming from the engine compartment when the vehicle was started. The check engine warning light was illuminated. The vehicle was taken to the dealer where the failure was diagnosed as an engine misfire and that the coils needed to be replaced. The vehicle was repaired; however, the failure continued as soon as the vehicle was picked up from the dealer. The vehicle was taken back to the dealer where it was awaiting diagnostic testing. The contact recently received a Service Campaign from the manufacturer for the engine monitoring logic. The contact was relating the Service Campaign to the failure. The manufacturer was not notified of the failure. The approximate failure mileage was 204,000.