The contact owns a 2016 Ford F-150. The contact stated while driving 55 MPH the vehicle shifted down on its own and slid, she hit the breaks, while going on a curve and could not control the vehicle, causing to run into a dirt pile. The front of the vehicle collided into a dirt pile on the side of a road. The vehicle came to a full stop after the collision. The air bags did not deploy. The vehicle was not towed. No lights were illuminated on the cluster panel before the collision. No police report was filed. The contact was the only passenger in the vehicle. The contact suffered whiplash on her neck. The contact referenced NHTSA Campaign Number: 26V237000 (Power Train) to be the cause of the incident. The dealer was not notified of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 121,000.