Just went out to start the expedition (2008 EL with about 35000 miles). I got in, the power running board opened, started to turn the key, the power seat started forward, it made one very short noise as if it were going to start, then the power went completely out. It has no lights, no power anything, and it won't even try to start. The battery has a green "eye". Is there some sort of master relay? Worst part is, without electric, I can't get it out of park to drift it forward. HELP!!

 

Something similar happened to me. Solution was to clean the battery terminals which had corrosion from the hot, humid weather we were having.

Cleaned the terminals, and cables, then everything worked fine for me anyway.

 

Sounds like an overloaded circuit while you tried to start. Cleaning the terminals is a good place to start.

 

To get it out of park you need to use the shift override button located next to the shifter under a small plastic tab. This allows you to put the car in neutral for just such emergency. Consult your owners manual if unsure, all cars built since the late 90's have had this.