Ford makes no reference to a BCM in either their owners manual shop manuals or parts manuals
The owners manual calls the fuse box a fuse box
The service manuals call the fuse box a SMART JUNCTION BOX
The parts manual refer to the fuse box as a fuse panel
I have yet to see the fuse box referred to as a BCM in any Ford Manuals
Ford does not use a BCM in any 1st or 2nd gen. expeditions and I would almost bet in none of the 3rd gen expys although that I am not 100% sure of the 3rd gens.