The contact owns a 2016 Ford Expedition. The contact stated while starting the vehicle, the engine made a knocking sound. No warning light was illuminated. The contact related the failure to the cam phasers; however, the vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and advised the contact to file a complaint with the NHTSA Hotline. The failure mileage was approximately 148,000.