Just got a V70 with 75k miles. I've seen many posts here concerning problems with the door locking system. Mine seems intermittant in the driver's door. Sometimes it all works okay, sometimes the driver door lock won't respond to the remote fob (haven't had a chance to see if the dead door responds to the central locking button; I suspect it will not). I hear the relay clicking each time I press the unlock button on the fob, so I'm sure the remote is okay. Methinks it's the limit switch. Comments/suggestions?