Well, not much help, but here's a clue : My dome light quit working. So I checked for shorts and found none (fuse #15 kept blowing). So I traced the wiring back to that GEM (General Electronic Module) behind the driver's kick panel and replaced it. Then, my key wouldn't start the car ! So apparently, the FOB access/security stuff is "flashed" to the GEM (and I don't wanna pay the dealer $80 to reprogram my keys).
Good luck, and please report back if you find the cure.