I carry a general tool kit, a quality tire pressure guage, duct tape, electrical tape, jump starter pack, shop towel roll, electrical tester, and a couple regular towels.
I think it could be axles and warped rotors. If you live in a mountainous area, don't ride the brakes downhill. That is a common cause of warped rotors.
I had that happen once about a year ago. Someone on here said to wait 30 minutes and try again. I did, and they worked. I haven't had the problem since.
Like others have said, your truck is going into sleep mode. If you put the Ford app on your phone, it will tell you every time it does that. The same thing happens to alot of us, mostly hybrid owners. I got the message for 2 yrs, almost every day. I finally went to ford and got a new battery...