
significantly shorter or, if the vehicle is driven
cautiously, somewhat longer.
Do not continue driving in emergency mode if
R you notice knocking sounds
R the vehicle starts to shake
R smoke develops and you smell rubber
R ESP ®
is intervening continuously
R you notice tears on the tire sidewalls
After driving in emergency mode, you must
have the rims inspected by an authorized
Mercedes-Benz Center to check if they are
suitable for further use. The failed tire must
be replaced in any case.
When replacing individual or all tires on the
vehicle, make sure only tires marked with
“MOExtended” are mounted in the size
specified for your vehicle ( Y page 352).
Bleeding the fuel system (diesel
engine only)
Driving the vehicle until the fuel tank is empty
is not recommended. Otherwise, air may be
sucked into the fuel system. If this happens,
the malfunction indicator lamp = (USA
only) or ; (Canada only) comes on and the
engine may not start immediately after
refueling the vehicle.
After refueling:
XMake sure the automatic transmission is in
park position P.
The transmission position indicator in the
multifunction display should be on P.XDo not depress the accelerator.XIf necessary, remove the KEYLESS-GO
start/stop button from the starter switch.XTurn the SmartKey in the starter switch to
position 2 for at least 10 seconds.XReturn the SmartKey in the starter switch
to position 0.XTurn the SmartKey in the starter switch to
position 3 and hold it there for a maximumof 10 seconds or until the engine runs
surge-free.
If the engine does not start:
XTurn the SmartKey in the starter switch
once more to position 2 for at least
10 seconds.XReturn the SmartKey in the starter switch
to position 0.XTurn the SmartKey in the starter switch
once more to position 3 and hold it there
for a maximum of 10 seconds or until the
engine runs surge-free.XIf necessary, repeat the above steps.
If the engine still does not start after
3 attempts:
Do not make any further attempts to start the
engine. Contact an authorized Mercedes-
Benz Center or call Roadside Assistance
( Y page 201).
i When the malfunction indicator lamp
= (USA only) or ; (Canada only) in
the instrument cluster has been illuminated
for the above condition, it will remain
illuminated until the engine was cycled on
and off four times in a row.
AdBlue ®
(diesel engine only)
The BlueTEC exhaust gas aftertreatment
system requires a reducing agent (AdBlue ®
)
in order to function properly. Refilling with
AdBlue ®
is part of the regular maintenance
service work. A tankful of AdBlue ®
should
suffice until the next maintenance service
under normal driving conditions.
When the AdBlue ®
tank is low, the message
Check Additive See Operator’s
Manual appears in the multifunction display.
When the AdBlue ®
level drops to the
minimum level, the message Remaining
Starts: 20 appears in the multifunction
display.
AdBlue ®
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Battery fluid contains sulfuric acid. Do not
allow this fluid to come in contact with eyes,
skin or clothing. In case it does, immediately
flush affected area with water and seek
medical help if necessary.
A battery will also produce hydrogen gas,
which is flammable and explosive. Keep
flames or sparks away from battery, avoid
improper connection of jumper cables,
smoking etc.GWarning!
Do not place metal objects on the battery as
this could result in a short circuit.
Use leak-proof batteries only to avoid the risk
of acid burns in the event of an accident.
Take care that you do not become statically
charged, e.g. by wearing synthetic clothing or
rubbing against textiles. For this reason, you
also should not pull or push the battery over
carpets or other synthetic materials.
Never touch the battery first. First touch the
outside body of the vehicle in order to release
any possible electrostatic charges.
Do not rub the battery with rags or cloths. The
battery could explode if touched due to
electrostatic charge or due to spark
formation.
! The battery is a
Valve-Regulated Lead
Acid (VRLA) battery, also referred to as
“fleece” battery.
Such batteries do not require topping-up of
the electrolyte level. VRLA batteries
therefore do not have cell caps and the
battery cover is non-removable. Do not
attempt to open the battery as otherwise
the battery will be damaged.
VRLA batteries do not require topping-up of
the electrolyte level. They cannot be
opened to check the electrolyte level.
However, the battery condition must be
checked periodically by performing a
battery conductance test. Refer to
Maintenance Booklet for battery condition
testing intervals.
The factory-equipped battery may only be
replaced with a battery that
R has the same security features
R is of identical size
R is of identical voltage
R is of identical capacity
! As any other battery, the battery may
discharge if you do not operate the vehicle
for an extended period of time. Have the
battery disconnected at a qualified
workshop or an authorized Mercedes-Benz
Center in such a case. You may also
connect an accessory battery charge unit
expressly approved by Mercedes-Benz for
your vehicle model to maintain the battery
charge. Contact an authorized Mercedes-
Benz Center for further information.
The battery, the battery ventilation hose
and the lateral plug must always be
securely installed when the vehicle is in
operation.
! Never loosen or detach battery terminal
clamps while the engine is running or the
SmartKey is in the starter switch or
KEYLESS-GO button is in position 1.
Otherwise the alternator and other
electronic components could be severely
damaged.
Have the battery checked regularly at an
authorized Mercedes-Benz Center.
Refer to Maintenance Booklet for
maintenance intervals or contact an
authorized Mercedes-Benz Center for
further information.
i After battery power was interrupted, do
the following:
R Set the clock ( Y page 132).
Vehicles with COMAND system with
navigation module: Time and date are set
automatically.
R Synchronize the door windows
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damage the catalytic converter31
and may
present a fire risk.
Make sure the jumper cables do not have
loose or missing insulation.
Make sure the cable clamps do not touch
any other metal part while the other end is
still attached to a battery.
If the battery is discharged, the engine can be
started with jumper cables and the fully
charged battery of another vehicle or an
equivalent starter pack. Observe the
following:
R Access to the battery is not possible on all
vehicles. If you cannot access the battery
of the other vehicle, provide jump start
power by an external battery or starter
pack.
R Jump starting should only be performed
when the engine and catalytic converter 32
are cold.
R Do not start the engine if the battery is
frozen. Let the battery thaw out first.
R Only jump start from batteries with the
same voltage rating (12 V). Jump startingwith a more powerful battery could damage
the vehicle’s electrical system. Such
damage will not be covered by the
Mercedes-Benz Limited Warranty.
R Only use jumper cables with sufficient
cross-section and insulated terminal
clamps.
R Always make sure the jumper cables are
not on or near pulleys, fans or other parts
that move when an engine is started or
running.
R Should the battery be drained completely,
let the donating power source charge the
vehicle for several minutes before
reattempting the starting process.
The jump-start contacts are located in the
engine compartment on the passenger side.XMake sure the two vehicles do not touch.XSwitch off all electrical consumers.XEngage the parking brake.XMake sure the automatic transmission is in
park position P.XOpen the hood ( Y page 213).31
Vehicles with gasoline engine only.
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Position C represents the charged battery of
another vehicle or an equivalent starter pack.
XFlip up cover : of positive terminal = in
direction of arrow.
! Never invert the terminal connections!
XConnect positive terminal ; of charged
battery C with positive terminal = with a
jumper cable. Clamp the cable to positive
terminal ; of charged battery C first.
XStart engine of the vehicle with charged
battery C and run at idle speed.
XSlide cover A from negative terminal B in
direction of arrow.
XConnect negative terminal ? of charged
battery C with negative terminal B with
a jumper cable. Clamp the cable to
negative terminal ? of charged battery
C first.
XStart engine of the vehicle with the
discharged battery and run at idle speed.
You can now turn on the electrical
consumers. Do not switch on the
headlamps under any circumstances.
XRemove the jumper cables from negative
terminals ? and B first.
XRemove the jumper cables from positive
terminals ; and =.
You can now switch on the headlamps.
XClose cover : of positive terminal =.XSlide cover A back onto negative terminal
B.
XHave the battery checked at the nearest
authorized Mercedes-Benz Center.
Towing the vehicle
Safety notes
Mercedes-Benz recommends that the vehicle
be transported with all wheels off the ground
using flatbed or appropriate wheel lift/dolly
equipment. This method is preferable to other
types of towing.
GWarning!
HYBRID vehicles: It is imperative that you read
the HYBRID Supplemental Operating
Instructions included in your vehicle literature
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portfolio. You may otherwise not recognize
potential danger.
! To prevent damage during transport, do
not tie down vehicle by its chassis or
suspension parts.
If circumstances do not permit the
recommended towing methods, the vehicle
may be towed with all wheels on the ground
only so far as necessary to have the vehicle
moved to a safe location where the
recommended towing methods can be
employed.
! Before towing the vehicle observe the
following instructions:
RDo not tow-start the vehicle. You could
otherwise seriously damage the
automatic transmission which is not
covered by the Mercedes-Benz Limited
Warranty.
RDo not tow with sling-type equipment.
Towing with sling-type equipment over
bumpy roads will damage radiator and
supports.
RTowing of the vehicle should only be
done using the properly installed towing
eye bolt. Never attach a tow cable, tow
rope or tow rod to the vehicle chassis,
frame or suspension parts.
GWarning!
With the engine not running, there is no power
assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
! Avoid pulling the vehicle abruptly or
diagonally, since it could result in damage
to the chassis alignment.
! Do not use the towing eye bolt for
recovery, as this could damage the vehicle.
If in doubt, recover the vehicle with a crane.
iIf the battery is disconnected or
discharged
Rthe SmartKey will not turn in the starter
switch
Rthe automatic transmission will remain in
park position P
For more information see “Battery”
(Y page 334) or “Jump starting”
(Y page 336).
Installing towing eye bolt
Depending on whether you are towing a
vehicle or you are being towed, the towing eye
bolt can be screwed into threaded holes
which are located behind covers on each
bumper.
The towing eye bolt is supplied with the
vehicle tool kit, located in the cargo
compartment underneath the cargo
compartment floor (Y page 268).
XTake the towing eye bolt out of the space
underneath the cargo compartment floor.
Removing cover in front bumper
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Fixing towing eye bolt
Example illustration front bumper
XTake the towing eye bolt and, if so
equipped, the wheel wrench from the
vehicle tool kit.
XScrew towing eye bolt ; clockwise into
threaded hole to its stop.
XInsert wheel wrench into towing eye and
tighten towing eye bolt ; by turning it
clockwise.
or
XIf your vehicle is not equipped with a wheel
wrench, use a suitable object to turn the
towing eye bolt.
Removing towing eye bolt
XLoosen towing eye bolt ; by turning it
counterclockwise.
XUnscrew towing eye bolt ;.XReinstalling cover: Engage cover :
(Y page 339) at top and press at bottom.
XStore the towing eye bolt ; and wheel
wrench back into the vehicle tool kit.
Towing with one axle raised
! The vehicle may be towed only for
distances up to 30 miles (50 km) and at a
speed not to exceed 30 mph (50 km/h).
! Vehicles with 4MATIC: Do not tow with
one axle raised. Doing so could damage the
transfer case, which is not covered by the
Mercedes-Benz Limited Warranty.
All wheels must be on or off the ground.
Observe instructions for towing the vehicle
with all wheels on the ground.
When towing the vehicle with one axle raised,
the wheels on the ground have to move freely.
Therefore follow the respective steps below,
after the front or the rear axle being raised:
Towing with the front axle raised
XSwitch off the automatic central locking
(Y page 135).
XSwitch on the hazard warning flasher
(Y page 96).
XMake sure the automatic transmission
remains in neutral position N. Observe
instructions, see “Remaining in neutral
position N” (Y page 111).
! Because the ESP® operates
automatically, the engine and ignition must
be shut off (SmartKey in starter switch
position 0 or 1 or KEYLESS-GO start/stop
button in position 0 or 1) when the vehicle
is being towed with one axle raised.
Active braking action through the ESP®
may otherwise seriously damage the brake
system which is not covered by the
Mercedes-Benz Limited Warranty.
! Keep in mind that it is important for the
SmartKey to be left in starter switch with
the ignition switched off. As soon as the
SmartKey is removed from the starter
switch the automatic transmission will shift
to park position P.
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Towing with the rear axle raisedXSwitch off the ignition and remove the
SmartKey from the starter switch.XSwitch on the hazard warning flasher
( Y page 96).XTake the SmartKey or SmartKey with
KEYLESS-GO with you when leaving the
vehicle.
Towing with all wheels on the ground
GWarning!
If circumstances require towing the vehicle
with all wheels on the ground, always tow with
a tow bar if:
R the engine will not run
R there is a malfunction in the brake system
R there is a malfunction in the power supply
or in the vehicle’s electrical system
This is necessary to adequately control the
towed vehicle.
Prior to towing the vehicle with all wheels on
the ground, make sure the SmartKey is in
starter switch position 2.
GWarning!
With the engine not running, there is no power
assistance for the brake and steering
systems. In this case, it is important to keep
in mind that a considerably higher degree of
effort is necessary to brake and steer the
vehicle. Adapt your driving accordingly.
XMake sure the ignition is switched on.XWith the vehicle at a standstill, depress the
brake pedal and keep it pressed.XShift the automatic transmission into
neutral position N.XRelease the brake pedal.XIf engaged, release the parking brake.XSwitch on the hazard warning flasher
( Y page 96).!
Keep in mind that it is important to have
the ignition switched on. Removing the
SmartKey from the starter switch or
opening a front door with the ignition
switched off will automatically shift the
automatic transmission into park position
P .
! The vehicle may be towed only for
distances up to 30 miles (50 km) and at a
speed not to exceed 30 mph (50 km/h).
i While being towed with the hazard
warning flasher in use, use the combination
switch in the usual manner to signal turns.
Only the selected turn signal will operate.
Upon canceling the turn signal, the hazard
warning flasher will operate again.
Stranded vehicle
Freeing a stranded vehicle, on which the
wheels are dug into sand or mud, should be
done with the greatest of care, especially if
the vehicle is heavily loaded.
Note the following when freeing a stranded
vehicle:
R Avoid pulling the vehicle abruptly or
diagonally, since it could result in damage
to the chassis alignment.
R Never try to free a vehicle that is still
coupled to a trailer.
R If possible, a vehicle equipped with a trailer
hitch receiver should be pulled backward in
its own previously made tracks.
Fuses
Introduction
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.
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GWarning!
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.
A 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.
iIn case of a blown fuse contact Roadside
Assistance or an authorized Mercedes-
Benz Center.
If a newly inserted fuse blows again, have the
cause determined and rectified by an
authorized Mercedes-Benz Center.
The fuse chart is located in the cargo
compartment with the vehicle tool kit
(Y page 268). The fuse chart explains the fuse
allocation and fuse amperages.
Before replacing fuses
XEngage the parking brake.XMake sure the automatic transmission is in
park position P.
The transmission position indicator in the
multifunction display should be on P.
XSwitch off all electrical consumers.XTurn off the engine.XRemove the SmartKey from the starter
switch.
XVehicles with KEYLESS-GO: Open the
driver’s door (this puts the starter switch in
position 0, same as with the SmartKey
removed from the starter switch). The
driver’s door then can be closed again.
Fuse box in passenger compartment
! Do not use sharp objects such as a
screwdriver to open the fuse box cover in
the dashboard. You could damage the fuse
box cover or the dashboard.
The fuse box is located behind a cover in the
dashboard on the front passenger side.
XOpen the front passenger door.XOpening: Open the glove box.XOpening: Insert flat, blunt object as a lever
into the edge of fuse box cover : at the
position indicated by the arrow.
XLoosen fuse box cover : from the
dashboard using the lever.
XUsing your hands, pull fuse box cover :
out and remove.
XClosing: Hook fuse box cover : into
holders on the front of the dashboard.
XPress fuse box cover : back on until it
engages.
! The fuse box cover must be properly
positioned as described. Otherwise,
moisture or dirt could enter the fuse box
and possibly impair fuse operation.
Fuse box in engine compartment
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