Mercedes-Benz B-Class 2011 Owner's Manual page 291

Electrical fuses
288
traced and rectified at a qualified specialist
workshop.
! Only use fuses that have been approved
for Mercedes-Benz vehicles and which
have the correct fuse rating for the system
concerned. Only use fuses marked with an
"S". Components or systems could other-
wise be damaged.
The fuses in your vehicle serve to close down
faulty circuits. If a fuse blows, all the compo-
nents on the circuit and their functions stop
operating.
Blown fuses must be replaced with fuses of
the same rating, which you can recognise by
the colour and fuse rating. The fuse ratings
are listed in the fuse allocation chart.
If the newly inserted fuse also blows, have the
cause traced and rectified at a qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre.
Before replacing a fuse
Park the vehicle and apply the electric park-
X
ing brake.
Switch off all electrical consumers.
X
Turn the key to position 0 in the ignition
X
lock and remove it (
cator lamps in the instrument cluster must
be off.
The fuses are located in various fuse boxes:
fuse box in the engine compartment on the
R
left-hand side of the vehicle, when viewed
in the direction of travel
fuse box in the front-passenger footwell
R
The fuse allocation chart is on the fuse box in
the front-passenger footwell (
Fuse box in the engine compartment
! Make sure that no moisture can enter the
fuse box when the cover is open.
page 127). All indi-
Y
page 275).
Y
! When closing the cover, make sure that it
is lying correctly on the fuse box. Moisture
or dirt could otherwise impair the operation
of the fuses.
Open the bonnet (
X
Y
Remove any existing moisture from the
X
fuse box using a dry cloth.
To open: open clamps ;.
X
Fold cover : upwards in the direction of
X
the arrow and remove it.
To close: check whether the seal is lying
X
correctly in cover :.
Insert cover : at the back into openings
X
= on the fuse box.
Fold down cover :.
X
Hook clamps ; into the fuse box and
X
close.
Close the bonnet (
X
Y
page 262).
page 263).