2000 Ford Expedition

Hi:
It sounds like one of the door switches has shorted. This is caused by a defective or misaligned door ajar switch. As a temporary fix you can try spraying WD-40 on all the door jams, work the lubricant in very well. See if this cures the problems. If so, one of the switches is faulty. What you can do is to remove the switched one at a time and check for a closed circuit when the switch is in or out. Also, if I remember correctly, if you remove the interior fuse, the car won't come out of park (even with the brake on).

Let me know what you find.

Joe