NHTSA Complaint #11597008 — 2015 FORD F-150

While driving truck on road at approximately 45 mph, truck suddenly and without warning shifted into first gear. After the sudden downshift, the truck then recovered normal shifting for the remainder of the drive. This is the third time this has happened in one year. The first time it happened, I was towing an empty small lawn trailer on a secondary road, with truck in "tow" mode. while descending a hill in a sharp curve, the truck suddenly down shifted to first gear, remained there for a few seconds and then started shifting normally. After this happened, when trailer was unhooked, the display continued to show that a trailer was attached to truck for several days and then the display went back to normal. The second and third time this occurred, there was no trailer attached, and truck was in normal driving mode, and there was no warning, wrench, or check engine lights visible on the dash display before or after the downshift happened. Fortunately, up to this point, I have been able to avoid crashing the truck during these downshifts, but I feel this is a very dangerous and serious safety concern to myself and others. I have contacted the local Ford dealership twice regarding what to do about this problem. Today was told to "monitor" it, that they were booked for weeks ahead, and suggested I may want to go to another dealership. After the second time it happened, I inquired about paying out of pocket for any software update that may help with this problem and told that since my truck was not shown on a recall, that it may make the problem worse, and advised they could not do it. It was also suggested that with no lights on dash display and it being a random occurrence, it would be difficult and expensive to figure out. The vehicle is available for inspection at any time.