One problem related to engine engine control module (ecu/ecm) has been reported for the 2013 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Hyundai Sonata based on all problems reported for the 2013 Sonata.
The contact owns a 2013 Hyundai Sonata. The contact stated that while driving 45-50 mph and depressing the accelerator pedal, the vehicle failed to respond and hesitated. The brake and the hybrid system warning lights were illuminated. The contact was able to pull to the right side of the road and waited for her husband to arrive. The contact turned off the vehicle and restarted the vehicle, and the vehicle operated as intended. A dealer was contacted. The vehicle was taken to a dealer, where it was diagnosed, and determined that the hybrid ecu needed to be replaced. The contact stated that the dealer checked the error on the brake failure light that was illuminated, but had not yet gotten a response back from the manufacturer. The vehicle was taken to auto zone where it was diagnosed, and determined that the hybrid ecu needed to be replaced. The contact stated that the failure had occurred on several occasions for the past three years. The engine was replaced, and the vehicle was repaired. The manufacturer was not notified of the failure and informed the contact that they have not heard from the dealer. The approximate failure mileage was 128,000.