When I use my key fob or center button the drivers side unlocks normally but the passenger side door lock button pops up and down twice but doesn't go all the way up. I try both the inside and outside door handles and can't open the door. The door lock postioner is up about 3/4 of the way and very hard to move. Door will not unlock and therefore will not open from the inside or outside. Pulling the inside handle does move the door lock positioner but will NOT fully unlock the door. Please note the 2004 Z4 does not have a passenger side key slot to unlock with a key.