There are a few important fuses which are not shown on the fuse chart that the owner is provided with, nor are they shown in the Owner's Manual. On the CLK-class models these fuses are termed Pre-fuses.
On W215 models there are high-current fuses located on connector & fuse strip X4/10 situated in the engine bay, and connector & fuse strip X4/22 situated in the trunk - presumably behind a cover. The purpose of these fuses is to protect the other fuseboxes distributed around the vehicle, plus the generator.
Fuse X4/10f1 (150A) protects K40/6, part K40/8.
Fuse X4/10f2 (60A) protects N73 (ignition sw system), A2/43 (COMAND).
Fuse X4/10f3 (150A) protects part K40/7, F3 (cockpit fusebox).
Fuse X4/22f1 (60A) protects part K40/7, part K40/8, N3/10, N73, N80.
Fuse X4/22f2 (100A) protects K40/5.
WIS drawings of the relevant battery circuits, and the location of X4/10, X4/22, plus random connectors on the vehicle, are below.
On W215 models there are high-current fuses located on connector & fuse strip X4/10 situated in the engine bay, and connector & fuse strip X4/22 situated in the trunk - presumably behind a cover. The purpose of these fuses is to protect the other fuseboxes distributed around the vehicle, plus the generator.
Fuse X4/10f1 (150A) protects K40/6, part K40/8.
Fuse X4/10f2 (60A) protects N73 (ignition sw system), A2/43 (COMAND).
Fuse X4/10f3 (150A) protects part K40/7, F3 (cockpit fusebox).
Fuse X4/22f1 (60A) protects part K40/7, part K40/8, N3/10, N73, N80.
Fuse X4/22f2 (100A) protects K40/5.
WIS drawings of the relevant battery circuits, and the location of X4/10, X4/22, plus random connectors on the vehicle, are below.