The contact owns a 2019 Ford F-150. The contact stated while driving 70 MPH, the vehicle vibrated abnormally. There was no warning light illuminated. The vehicle was taken to the dealer where the tires were rotated. The contact took the vehicle back to the residence; however, the failure persisted. The vehicle was taken back to the dealer where it was diagnosed that the transmission had failed and needed to be replaced. The vehicle was not repaired due to the cost. The manufacturer was notified of the failure, and the contact was referred to the NHTSA Hotline for assistance. The failure became a recurring failure, and the contact parked the vehicle at the residence. The contact stated that the vehicle was no longer driven due to the safety concerns. The failure mileage was approximately 150,000.