Make sure that no moisture can enter the fuse box when the cover is open.
When closing the cover, make sure that it is lying correctly on the fuse box. Moisture seeping in or dirt could otherwise impair the operation of the fuses.

■ Open the hood.
■ Remove any existing moisture from the fuse box using a dry cloth.
■ To open: open clamps 2.
■ Fold up cover 1 in the direction of the arrow and remove it.
■ To close: check whether the seal is seated correctly in cover 1.
■ Insert cover 1 at the side of the fuse box into the retainers.
■ Fold down cover 1 and close clamps 2.
■ Close the hood.
Problems with the sliding sunroof
WARNING
If you close the sliding sunroof again immediately after it has been blocked
or reset, the sliding
sunroof closes with increased or maximum force. The reversing feature is then
not active. ...
Exterior spare wheel bracket
General notes
WARNING
If the spare tire is more than 6 years old or is
not the same model as the regular tires, have
the spare tire replaced with a new tire at the
nearest Mercedes-Benz Center.
...
Control panel for 3-zone automatic climate control with additional
rearcompartment
climate control
Canada only
Front control panel
1 Sets the temperature, left
2 Defrosts the windshield
3 Switches the ZONE function on/off
4 Activates/deactivates cooling with air dehumidi ...