425 Practical hints
Fuses
Fuses
The electrical fuses in your vehicle serve to 
switch off malfunctioning power circuits.
If a fuse is blown, the components and 
systems secured by that fuse will stop 
operating.If a newly inserted fuse blows again, have 
the cause determined and rectified by an 
authorized Mercedes-Benz Center.
The following aids are available to help you 
replace fuses. The spare fuses and the fuse 
extractor are located in the trunk with the 
vehicle tool kit (
page 382) and the fuse 
chart is located in the fuse box in the 
passenger compartment (
page 425).
Fuse chart
The fuse chart explains the fuse 
allocation and fuse amperages.
Spare fuses
Fuse extractor
The electrical fuses are located in different 
fuse boxes:
in the passenger compartment on the 
driver’s side (
page 425)
on the driver’s side of the engine 
compartment (
page 426)Before replacing fuses:
Apply the parking brake (page 59).
Make sure the gear selector lever* is 
set to positionP (
page 157) (manual 
transmission to Neutral).
Turn off all electrical consumers.
Turn off the engine (page 61).
Remove the SmartKey from the starter 
switch.
Fuse box in passenger compartment
1Fuse box cover
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 
approved 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 by an 
authorized Mercedes-Benz Center.
iA blown fuse must be replaced by an 
appropriate 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.