My front passenger door has taken to clicking very rapidly and very noisily on opening, or when any other door is opened. It's very loud, almost a buzz which lasts about two seconds, and quite noticeable from outside the car. It sometimes, but rarely, makes this noise when the central locking is opened or shut, but it's every time when a door is opened. Any ideas of the cause, or the cure?

 

Sounds like the door module is going bad.
Expensive to fix.