Engine Grinding Noise problems of the 2015 Ford F-150

I was on the highway and the hill start assist/traction control lights started coming on. A few hundred miles later, more dash lights started flashing and then all dash lights went off and the truck lost all power. I could no longer accelerate. After a moment, it started working again. After a few more miles, it did it again, and this time when it powered down, the abs break system went on and created a terrible grinding noise and brought me to a stop on the side of the highway. I limped it on the side of the highway, trying to find an exit, and the truck repeatedly did the lights flashing/power down/breaks applied several more times at low speed. The nearest exit was about 10 miles, so I had to continue to do this for some time. Once I was at an exit, I disconnected the battery for about 20 minutes. When I re-connected the battery and started the truck, everything seemed fine, but now the check engine light was on. I decided to just risk it and keep driving, so that I could get home. About 100 miles later it started doing the same thing again. I was close enough to home to get off the highway and take back roads home. It did it a few more times and then quit doing it. This was a very dangerous situation, as my truck basically stopped while I was on the highway going 70 mph, and could have caused a serious accident, and left me no option but to either be broken down on the side of the highway or drive at very low speeds on the shoulder. The Ford dealer that I took the truck to told me that they can't replicate the issue and all diagnostics come back clean, so they are not able to fix anything. Others online that have had the same/similar issue have said that Ford said that it is a damaged throttle body that needs to be replaced, but the dealership that I went to did not suggest that as the cause.