Fuse box Mercedes w203 - fusesdiagram Fuse box in passenger compartment Mercedes w203. fuse box location. The main fuse box is located in the passenger compartment on the driver’s side of the cockpit. '00-'07 Mercedes C-Class (W203) Fuse Box Diagram The fuse box is located in the engine compartment on the left hand side. Twist screws (1) 90° counter clockwise. Pull up cover (2) Slide out retainer (3) and remove cover by pulling towards front. 2001-2007 C-Class Fuse List, Location, Diagram W203 – MB Medic W164 (2006-2011) W163 (1997-2005) S/CL Class. W140 (1991-1998) 2001-2007 C-Class Fuse List, Location, Diagram W203. Here is the list of fuse designation for Mercedes Benz C Class. It is combined list of all the fuses, including pre facelift all the way up to 2007.