2002 c230K coup Door Lock Problem
 

I am having a problem with the driver side door lock only. When I unlock the door the driver side door lock unlocks and locks several times and often does not unlock. I have to continue to attempt to unlock the door until the lock stops in the unlocked position. Also as I begin to drive when the doors lock automatically the driver side door lock also locks and unlocks repeatedly. Only the driver side door lock does this.