The contact owns a 2017 Ford F-150. The contact stated while driving at an undisclosed speed, there was a clanking sound coming from the engine. There was no warning light illuminated. The vehicle was taken to the dealer where it was diagnosed that the cam phasers had failed and needed to be replaced. The vehicle was repaired but the failure persisted. The contact stated that while the vehicle was parked and turned off, the contact was unable to restart the vehicle. There was no warning light illuminated. The vehicle was towed to the dealer where it was diagnosed that the cam phasers had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The approximate failure mileage was 89,000.