NHTSA Complaint #11536832 — 2013 FORD F-150

As you are driving the vehicle will randomly down shift into first gear, causing the vehicle to potentially slam into first while in mid drive almost as if you hit a wall, this causes the vehicle to lose any information on the dash including speedometer. There are no warning lamps on prior to incident. Took it to a dealer to have it diagnosed and diagnosis was recorded as Transmission speed sensor which was common for recalls recently. Uncertain, how or when it started happening there was an elderly couple who owned the vehicle before me. This incident occurs frequently but not all the time.