im the proud owner of a 2.7t 2001 with 70k...as of lately seems my drivers side door lock isnt responding to the keyless entry...all the other locks are popping up except the drivers side door....same with the lock/unlock button inside the car...all other doors lock/unlock except drivers side....for the time being i had just been manually using the key to do so, but now seems like the key doesnt even want to fit into the lock all the way....wd-40? fix for that??......the front driver side door

 

Pull the door skin off, check / lube the locking mechanism, make sure it's not binding somewhere. Squit WD-40 into the keyhole can't hurt either.

 

removing the door panel?...is there a diagram to properly do that?