NHTSA Complaint #11499401 — 2017 FORD F-150

Truck downshifts periodically from 3rd to 2nd gear or from 4 to 3 of 4th to 2nd, for no reason, while keeping speed same on flat road. This causes tire squealing action in some cases and is unsafe. Also, at the same time, rear motion sensor system failure light comes on with an OK button. I select the button and then a wrench sign lights up indicating service requires. Sometimes also a check engine light comes on. Sometimes also the display showing what gear truck is in goes blank, or flutters through all gears. Sometimes a fan/generator comes on as well for no apparent reason. Sometimes the truck is goes in to no gear at all (neutral?) while I am moving. I pull over, restart the engine and the problems usually go away. This problem was reported to 2 Ford dealers (Cella and Bergey) on about 7/2022 and 8/2022. They gave me very different assessments of the problem, the most expensive being a new lead frame ($1,300) Problems originally started around 3/2022. Truck has about 35,000 miles on it.