The contact owns a 2024 Ford Maverick. The contact stated that after parking uphill, the contact exited the vehicle and lowered the tailgate to unload the bed; however, the vehicle unexpectedly rolled backward downhill, causing the tailgate to hit a tree and crash into a railing. The vehicle was driven away from the crash site. The insurance company was notified of the failure, and the tailgate was replaced at a collision center. The contact associated the failure with NHTSA Campaign Number: 25V863000 (Power Train); however, the VIN was not included in the recall. The failure mileage was approximately 15,000.