Two problems related to engine knocking noise have been reported for the 2009 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2009 Hyundai Sonata based on all problems reported for the 2009 Sonata.
Tl- the contact owns a 2009 Hyundai Sonata. The contact stated that while his son was driving at 70 mph, the engine stalled as his son heard an abnormal, knocking sound emit from the engine. His son also stated that the check engine light had illuminated on the instrument panel as the failure occurred. The contact's son was able to coast the vehicle into a parking lot where it remained. The manufacturer was notified of the failure and they informed the contact that there were no recalls on the vehicle, he was then given a case number. The vehicle had yet to be repaired. The failure mileage was approximately 180,000. Jo.
I was driving on the highway when I heard something pop inside the hood followed by a loud knocking sound. I lost acceleration power and I had almost gotten hit by semi while rolling to side of the road. Taken it to mechanic shop said that's my engine rod bearing was broken. Sad since this is my first vehicle.