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Where will I find...?
253
location of the jack and of the other tools
may differ from those illustrated.
Example
1
Tool holder
2 Wheel wrench
3 Electric air pump
4 Instructions on the installation position of
the tool holder
5 Fuse allocation chart
6 Jack, ratchet ring spanner
7 Centring pin
8 Folding wheel chock
9 Towing eye
a Wheel bolts
b Ball coupling of the trailer tow hitch*
c Emergency spare wheel* Removing the emergency spare wheel*
X
Remove the jack from the tool holder
(Y page 252). 1
Retaining screw
2 Emergency spare wheel*
3 Tool holder
X Turn retaining screw 1anticlockwise and
out of tool holder 3and remove it.
i If retaining screw 1does not come out
immediately, turn tool holder 3anticlock-
wise a little.
Retaining screw 1should then unscrew
with ease. X
Turn tool holder 3approximately 180°, so
that the electrical air pump points back-
wards (Y page 252).
X Remove tool holder 3from emergency
spare wheel* 2.
X Remove emergency spare wheel* 2from
the emergency spare wheel well.
Stowing the emergency spare wheel*
X Remove the warning triangle from the
emergency spare wheel well (Y page 250). 1
Guides
In the spare wheel well, there are two guides
1 to keep the emergency spare wheel* in
place. Practical advice
* optional
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Troubleshooting
291Problem Possible cause/consequence Suggested solutions
Vehicles with a petrol engine:
The engine is not running
smoothly and is misfiring. There is a malfunction in the
engine electronics or a mechani-
cal component of the engine con-
trol unit. X
Only depress the accelerator pedal slightly.
X Have the cause rectified immediately at a qualified specialist work-
shop.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it. A coolant temperature of over
120 °C is displayed. You also
hear a warning signal. The coolant level is too low. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently. X
Stop as soon as possible and allow the engine and the coolant to
cool down.
X Check the coolant level (Y page 223). Observe the warning notes
as you do so and top up the coolant if necessary. If the coolant level is correct, the
radiator fan may be faulty. The
coolant is too hot and the engine
is no longer being cooled suffi-
ciently. X
If the coolant temperature is less than 120 °C, you can continue
driving to the nearest qualified specialist workshop.
X Avoid heavy loads on the engine as you do so, e.g. driving on
mountain roads and stop/start driving. The engine does not switch off. The ignition lock is faulty. X
Open the fuse box in the engine compartment ( Ypage 334).
X Remove fuse 120 using the fuse extractor.
The engine stops.
If you wish to start the engine again:
X Replace the fuse. Practical advice
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Fuses
333
In the event of damage to the front axle Have the propeller shaft between the rear
axle and the transfer case removed.
Have the vehicle towed with the front axle
raised.
In the event of rear axle damage (Vehi-
cles with 4MATIC)
If the vehicle has transmission damage or
damage to the front or rear axle, have it trans-
ported on a transporter or trailer.
! New bolts must always be used when the
propeller shafts are refitted. The specified
tightening torques must be observed.
i Consult a Mercedes-Benz Service Centre.
In the event of damage to the electrical
system If the battery is defective, the automatic
transmission will be locked in position
P. To
shift the automatic transmission to neutral,
you must supply power to the vehicle's elec-
trical system in the same way as jump-start-
ing (Y page 329).
Have the vehicle transported on a transporter
or trailer. Fuses
Notes on changing fuses
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 will
fail.
Blown fuses must be replaced with fuses of
the same rating, which you can recognise by
the colour and value. The fuse ratings are lis-
ted in the fuse allocation chart. A Mercedes-
Benz Service Centre will be happy to advise
you. G
Risk of fire
Only use fuses that have been approved for
Mercedes-Benz vehicles and which have
the correct fuse rating for the systems con-
cerned. Do not attempt to repair or bridge
faulty fuses. Otherwise, a circuit overload
could cause a fire. Have the cause traced
and rectified at a qualified specialist work-
shop, e.g. a Mercedes-Benz Service Centre.
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.
! Only use fuses that have been approved
for Mercedes-Benz vehicles and which have the correct fuse rating for the system
concerned. Otherwise, components or sys-
tems could be damaged.
The fuses are located in various fuse boxes:
R Dashboard fuse box on the front-passenger
side
R Fuse box in the engine compartment on the
right-hand side of the vehicle
R Fuse box in the stowage well under the lug-
gage compartment floor
Fuse allocation chart The fuse allocation chart is located with the
vehicle tool kit (Y
page 252) in the stowage
compartment under the luggage compart-
ment floor. Practical advice
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Fuses
334 Before changing a fuse
X Park the vehicle.
X Switch off all electrical consumers.
X Remove the key from the ignition lock. Dashboard fuse boxes
1
Cover
! Do not use a pointed object such as a
screwdriver to open the cover in the dash-
board. You could damage the dashboard or
the cover.
X To open: open the front-passenger door.
X Pull cover 1upwards in the direction of
the arrow and remove it. X
To close: clip in cover 1at the top.
X Fold cover 1inwards until it engages.
X Close the front-passenger door. Fuse box in the engine compartment
1
Retaining clamp
2 Cover
X To open: open the bonnet (Y page 220).
X Remove moisture from the fuse box using
a dry cloth.
X Open retaining clamp 1.
X Fold cover 2upwards.
X To close: replace cover 2. !
The cover must be fitted properly, other-
wise moisture or dirt could affect the oper-
ation of the fuses.
X Close retaining clamp 1.
X Close the bonnet (Y page 221). Fuse box in the luggage compartment
Example: vehicle with an emergency spare
wheel*
1
Cover
X To open: open the tailgate.
X Open the luggage compartment floor and
secure it (Y page 250).
X Fold cover 1to the left in the direction of
the arrow. Practical advice
* optional
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Page 338 of 373
Fuses
335
On vehicles with the TIREFIT kit, the fuses are
located here too. Practical advice
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