NHTSA Complaint #11439927 — 2016 HYUNDAI SONATA

The contact owns a 2016 Hyundai Sonata. The contact stated that while driving at 65 MPH, the vehicle stalled and there was an abnormal knocking sound coming from the vehicle. No warning lights were illuminated. The vehicle was towed to the dealer. The dealer diagnosed the vehicle with engine failure and stated that the engine needed to be replaced. The dealer performed an Electronic Control Module (ECM) and Knock Sensor Detection System (KSDS) Product Improvement Campaign software update and an engine compression test. The engine compression test was sent to the manufacturer for approval of the engine replacement. The manufacturer denied the request for an engine replacement. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and informed the contact that the decision was final and that they would not replace the engine since the ECM software update needed to be performed before the engine failed. The failure mileage was 122,076.