456 Practical hints
Fuses
The electrical fuses in your vehicle serve to
switch off malfunctioning power circuits.
If a fuse is blown, the component(s) and
systems secured by that fuse will stop op-
erating.If a newly inserted fuse blows again, have
the cause determined and rectified at an
authorized Mercedes-Benz Center.
A fuse chart explains the fuse allocation
and fuse amperages. It is located in the
main fuse box in the passenger compart-
ment (
page 457).
The electrical fuses are located in different
fuse boxes:
Fuse box in passenger compartment
(
page 457)
Fuse box in engine compartment
(
page 457)
Fuse box in trunk (page 458)Before replacing fuses:
Depress the parking brake
(
page 134).
Make sure the manual transmission is
in Neutral (
page 136), automatic
transmission* is set to P (
page 140).
The gear position indicator in the ta-
chometer display should be on P.
Turn off all electrical consumers.
Turn off the engine (page 134).
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*
(Canada only):
Open the driver’s door.
Warning!G
Only use fuses approved by Mercedes-Benz
with the specified amperage for the system
in question and do not attempt to repair or
bridge a blown fuse. Using other than ap-
proved fuses or using repaired or bridged
fuses may cause an overload leading to a
fire, and/or cause damage to electrical
components and/or systems. Have the
cause determined and remedied at an au-
thorized Mercedes-Benz Center.
iA blown fuse must be replaced by an appro-
priate spare fuse (recognizable by its color or the
fuse rating given on the fuse) of the amperage
recommended in the fuse chart.
Any Mercedes-Benz Center will be glad to advise
you on this subject.
!Switch off the vehicle’s internal electrical
functions (
page 448) when you are working on
the fuses.
iIn case of a blown fuse contact Roadside
Assistance or an authorized Mercedes-Benz
Center.
457 Practical hints
Fuses
Fuse box in passenger compartment
1Cover
2Remove cover
3Release cover
Opening
Open the driver’s door.
Using your hands, pull cover1 in the
direction of arrow3 and remove2.Closing
Hook cover1 into the opening at the
front.
Press cover1 back on until it engag-
es.
Fuse box in engine compartment
Open the hood (page 325).
1Clamps
2WireOpening
With a dry cloth, remove any moisture
from the fuse box.
Release wire2 from fuse box cover.
Release clamps1.
Remove fuse box cover.
Closing
Make sure the sealing rubber is proper-
ly positioned.
Attach fuse box cover.
Press fuse box cover down and secure
with clamps1.
Fasten wire2 on fuse box cover.
!Do not use sharp objects such as a screw
driver to open the fuse box cover in the dash-
board, as this could damage it.
!The cover must fit properly, as otherwise
moisture or dirt may impair the functionality of
the fuses.
