The contact owns a 2013 Ford F-150. The contact stated while driving 70 MPH, the vehicle jerked, and the transmission unexpectedly downshifted to first gear. The contact stated that several unknown warning lights were illuminated. The contact pulled over to the side of the road, turned off, and restarted the vehicle. The contact drove for a short while however, the failure recurred. The contact stated that the engine revved, and the mileage gauge went to zero. The vehicle was not yet diagnosed. The contact discovered Technical Service Bulletin: 19N01 on the Ford App. The manufacturer was made aware of the failure and informed the contact that the mileage eliminated the vehicle from the Extended Warranty. The failure mileage was unknown.