Anybody run into this before? Battery seemingly died overnight. Added a new battery and everything comes on and works except that the car does not start. What is throwing me is that whilst turning the key there is a repeating clunking from within the car as if the locking system is engaging the central locking. Reset the keys ok, and immobilizer light goes off as it should. I am familiar with checking the starting problems but can anybody tell me what the deal with the central locking is and what the connection is? Thanks