Mercedes-Benz M-Class Owner's Manual page 357

Electrical fuses
354
To open: lift and fold out carpet : in the
X
direction of the arrow.
Release clamps ; by pressing them in the
X
direction of the arrow.
Fold cover = up in the direction of the
X
arrow and remove it.
i
The fuse allocation chart is located under
cover =.
! Make sure that no moisture can enter the
fuse box when the cover is open.
To close: insert cover = at the side of the
X
fuse box into the retainer.
Fold down cover = until clamps ; engage
X
audibly.
Fold the right-hand rear bench seat back. .
X