The contact owns a 2018 Ford F-150. The contact stated that upon starting the vehicle, there was an abnormal rattling sound coming from the front of the vehicle. The contact stated that while driving at various speeds, the transmission was slipping. There was no warning light illuminated. The vehicle was taken to a local independent mechanic where the vehicle was diagnosed, and the contact was informed that the cam phasers needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 193,000.