I found I have almost the same thing it is brake fluid Ford changed the brake booster behind the pedal. They had to order the part about a week I use one pedal driving so not to much on the brake pedal
I came home from the store the other day and shut the truck off and it said there was a update so I just hit update now and went into the house. I went outside a little time later and the truck was buzzing and I was just hoping that it would start after the update and all was OK but it sure was...