Mercedes E320 CDI Fuse Box Chart | Mercedes-Benz Forum Aug 03, 2017Cigarette lighter fuse Thanks for the help. Unfortunately, there does not seem to be a chart for the engine compartment fuse box. In fact, the user manual for my 2005 E320 CDI does not even mention the engine compartment fuse box. However, the fuse for my car was the 15 amp closest to the windshield. Now everything AOK. Fuse box Mercedes w203 - fusesdiagram Fuse box in engine compartment. fuse box location. The fuse box is located in the engine compartment on the driver’s side. Removing cover. Twist screws "2" 90° counterclockwise. Lift the rear of cover "1". Slide out retainer "3" and remove cover "1" by pulling towards front.