CLK 270CDI AUTO, 2004 w209
Take out fuse 4 in the rear fuse box in the boot fuel pump fuse
so you switched the switch to off and removed the key as normal, but the engine carried on running when you stopped at the petrol station?
The central locking works fine. Obvously not now ive disconnected the batt!
It might be handy just to join up the battery and try it as it is all part of the EIS and DAS this is the part the recognizes the key