s class w220

Just replaced my drivers seat belt the original problem was it was getting jammed when the car interior heated up. Just fitted the new one (USED) and now getting a message that the pre safe is no longer active. My question is does the new seat belt need coding? The replacement belt itself is...

I am looking for a practical maintenance manual for a Mercedes S 320 cdi w220 2002 era. I especially want to be able to understand the contents of the engine compartment as it is a bit of a mystery to me. I have searched high and low but cannot find anything that seems to do what a good...