Mercedes-Benz C-Class Manual page 56

Fuses
54
Ensure that the mat cover goes over the fuse
box and is located beneath the cavity panel of
the trunk or cargo compartment .
Fold cover : back.
X
Make sure that the cover is in the cavity panel
recess provided for it.
i
The fuse allocation chart is located in a
recess at the side of the fuse box. You can find
the corresponding fuse rating and fuse type
on the fuse allocation chart.