Wondering if anyone can help or advise. I have a 2000 a6 2.5tdi quattro. Yesterday one of the rear doors refused to open or unlock. Tried open via inner door handle and fob neitheir will unlock or open door. The door nub looks as if its trying to pop up but never does. Ive tried pushing the door shut firm to see if it's not quite closed but no luck. Im left with only trying to remove the door panel with it shut but would rather not go that route as it will cause damage. Any ideas or persons with aimilar past problems your advise would be really appreciated. A frustated a6 owner.