Locking/unlocking in an emergency
302 Locking/unlocking in an emergency
Emergency key
If the vehicle can no longer be unlocked or
locked with the key or the KEYLESS GO
key*, use the emergency key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system* will be triggered
(Y page 63).
There are several ways to turn off the alarm:
X Press the korj button on the key.
or
X Insert the key into the ignition lock.
or
X Press the KEYLESS GO button* in the igni-
tion lock. The KEYLESS GO key* must be in
the vehicle.
or
X Lock or unlock the vehicle using KEYLESS
GO*. The KEYLESS GO key* must be out-
side the vehicle. Releasing and removing the emergency
key element
1
Release catch
2 Emergency key element
X Push release catch 1in the direction of
the arrow and at the same time remove
emergency key element 2from the key. Unlocking the vehicle
If the vehicle can no longer be unlocked cen-
trally with the key or the KEYLESS GO key*:
X Remove the emergency key element from
the key (Y page 302). $
To unlock
X Insert the emergency key element into the
lock of the driver's door as far as it will go.
X Firmly turn the emergency key element
anti-clockwise as far as it will go to position
$ and hold it in this position.
i On right-hand-drive vehicles, turn the
emergency key element clockwise.
X Pull the door handle firmly.
The locking knob pops up.
The door is unlocked. Practical advice
* optional
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Replacing the wiper blades
311
Changing the bulbs in the licence plate
lamps
Licence plate lamp
1
Screws
X Switch off the lights.
X Open the tailgate.
X Remove screws 1.
X Remove the licence plate lamp.
X Replace the bulb.
X Insert the licence plate lamp.
X Replace and tighten screws 1. Replacing the wiper blades
Windscreen wiper blades
G
Risk of accident
The windscreen will not longer be properly
wiped if the wiper blades are worn. This
could prevent you from observing the traffic
conditions, thereby causing an accident.
Replace the wiper blades twice a year, ide-
ally in spring and autumn. G
Risk of accident
The wiper arms could start moving and
cause an injury if you leave the windscreen
wipers switched on.
Remove the key from the ignition lock
before replacing the wiper blades.
! Make sure that you touch only the wiper
arm of the windscreen wiper to avoid dam-
aging the windscreen wiper blades. Removing 1
Wiper blade
2 Release clips
3 Folding direction
4 Wiper arm
5 To remove the wiper blade
X Remove the key from the ignition lock.
X Fold wiper arm 4away from the wind-
screen until it engages.
X Press both release clips 2.
X Fold wiper blade 1in the direction of
arrow 3.
X Remove the wiper blade in the direction of
arrow 5. Practical advice
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Replacing the wiper blades
312
Fitting
1
Wiper blade
2 Retaining clips
3 Folding direction
4 Bracket
5 Lug
6 Recess
X Position new wiper blade 1with
recess 6on lug 5.
X Fold wiper blade 1in the direction of
arrow 3onto the wiper arm, until retaining
clips 2engage in bracket 4.X
Make sure that wiper blade 1is seated
correctly.
X Fold the wiper arm back onto the wind-
screen. Rear window wiper blade
G
Risk of injury
The wiper arm could be set in motion and
injure you if the windscreen wipers are
switched on.
Remove the key from the ignition lock
before replacing the wiper blade.
Removing 1
Wiper arm
2 Wiper blade X
Remove the key from the ignition lock.
X Fold wiper arm 1away from the rear win-
dow until it engages.
X Position wiper blade 2at a right angle to
wiper arm 1.
X Hold wiper arm 1and press wiper
blade 2in the direction of the arrow until
it releases.
X Remove wiper blade 2.
Fitting X
Place the new wiper blade 2onto wiper
arm 1.
X Hold wiper arm 1and press wiper blade
2 in the opposite direction to the arrow
until it engages.
X Make sure that wiper blade 2is seated
correctly.
X Position wiper blade 2parallel to wiper
arm 1.
X Fold wiper arm 1back onto the rear win-
dow. Practical advice
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Flat tyre
313Flat tyre
Flat tyre equipment variants
Your vehicle may be equipped with:
R a TIREFIT kit (Y page 252)
R an emergency spare wheel* ( Ypage 252)
R the MOExtended run-flat sys-
tem* (Y page 322) Preparing the vehicle
i Vehicle preparation is not necessary on
vehicles with MOE tyres*.
X Vehicles with the AIRMATIC package*:
Make sure that highway level* is selected
(Y page 154).
X Stop your vehicle as far away from traffic
as possible on solid, non-slippery, level
ground.
X Switch on the hazard warning lamps.
X Firmly depress the parking brake.
X Move the selector lever to P.X
All occupants must get out of the vehicle.
Make sure that they are not endangered as
they do so.
X Make sure that no one is near the danger
area whilst a wheel is being changed. Any-
one who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
X Switch off the engine.
Vehicles without KEYLESS GO* X
Remove the key from the ignition lock.
Vehicles with KEYLESS GO* X
Open the driver's door.
The on-board electronics have status 0,
which is the same as the key having been
removed.
X Vehicles with the AIRMATIC package* and
the Off-Road Pro engineering package*:
Remove the KEYLESS GO button from the
ignition lock. For all vehicles X
Get out of the vehicle.
X Close the driver's door.
X Place the warning triangle ( Ypage 250) at
a suitable distance. Observe legal require-
ments.
i To operate the electric air-pump, you can
use the power socket in the luggage com-
partment (Y page 207) or 2nd row of seats
(Y page 207), even when the ignition is
switched off. For example, to use TIREFIT
or to inflate the collapsible emergency
spare wheel*.
An emergency cut-off ensures that the on-
board voltage does not drop too low. If the
on-board voltage is too low, power to the
sockets is automatically cut-off. This
ensures that there is sufficient power to
start the engine. Practical advice
* optional
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Flat tyre
321Version 1
1
Flap
2 On/off switch
3 Electric connector with cable
4 Air pump hose with pressure gauge and
pressure release screw
5 Union nut Version 2
2
On/off switch
3 Electric connector with cable
4 Pressure gauge
5 Union nut
6 Pressure release button
X Version 1: open flap1.
X Version 1: pull connector 3and air hose
4 out of the housing.
X Version 2: pull connector 3and the air
hose out of the housing.
X Version 1: make sure that pressure
release screw 4on the pressure gauge is
closed.
X Remove the cap from the valve on the tyre.
X Screw union nut 5on the air hose onto the
valve. X
Make sure on/off switch 2of the electric
pump is set to 0.
X Insert connector 3into the socket in the
luggage compartment (Y page 207) or the
second row of seats (Y page 207).
! The socket /cigarette lighter *in the front
centre console is not designed for operat-
ing the electric air pump.
X Vehicles with a key: make sure that the
key is turned to position 2(Y page 76) in
the ignition lock.
or
X Vehicles with KEYLESS GO: press the
KEYLESS GO button twice.
X Press on/off switch 2on the electric air
pump to I.
The electric air pump is switched on. The
tyre is inflated.
X When a tyre pressure of 3.0 bar has been
reached, press 0on the electric air pump
on/off switch.
The electric air pump is switched off.
! Do not operate the electric air pump for
longer than eight minutes at a time without
a break. Otherwise, it may overheat. Practical advice
* optional
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Battery
325Disconnecting the battery
G
Risk of accident
If the battery is disconnected:
R the brake boosting effect will not be avail-
able. Greater braking force will then be
required and the brake pedal travel will
be longer. If necessary, depress the
brake pedal with maximum force.
R you can no longer turn the key in the igni-
tion and, on vehicles with KEYLESS
GO*, pressing the KEYLESS GO button*
will have no effect
R the selector lever is locked in position P
! Always disconnect the battery in
the order described below. Never swap the
terminal clamps. You may otherwise dam-
age the vehicle electronics.
X Firmly depress the parking brake and shift
the DIRECT SELECT lever to position P.
X Switch off the engine.
X Turn the key to position 2(Y page 76)in the
ignition lock.
X Switch off all electrical consumers. X
Open the front right-hand door.
X Position the right-hand front seat at its rear-
most position:
R
partially electric seat adjustment
(Y page 78)
R fully electric seat adjustment
(Y page 79) 1
Front right seat rail cover
2 Front left seat rail cover
X Pull right-hand cover 1forwards in the
direction of the arrow and pull it off the seat
rail.
X Pull left-hand cover 2as far forwards as
possible in the direction of the arrow.
i Left-hand cover 2cannot be completely
pulled off the seat rail. 3
Battery cover fastening nuts
X Loosen and remove fastening nuts 3
along the edge of the carpet.
i To do this, you need a 6 mm Allen key with
a shaft at least 30 cm long (not included in
the vehicle tool kit).
X Position the right-hand front seat as far
forward as possible:
R partially electric seat adjustment
(Y page 78)
R fully electric seat adjustment (Y page 79)
X Turn the key to position 0(Y page 76) in
the ignition lock. Practical advice
* optional
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Battery
326
X
Remove the key from the ignition lock.
or
X On vehicles with KEYLESS GO*: open the
driver's door. 4
Rear seat rail
5 Rear seat rail cover
X Prise off left-hand cover 5from seat rail
4.
X Repeat the procedure for right-hand cover
5. 6
Carpet
X Pull carpet 6back in the direction of the
arrow and fold it. 7
Battery cover fastening nuts X
Loosen and remove fastening nuts 7.
i To do this, you need a 6 mm Allen key with
a shaft at least 30 cm long (not included in
the vehicle tool kit). 8
Battery cover with integrated air duct
9 Pull battery cover to the side
a To raise the battery cover
X Raise battery cover 8gently in the direc-
tion of arrow aand pull in the direction of
arrow 9. Practical advice
* optional
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Towing and tow-starting
330
X
Electrical consumers can be switched on
again. Do not switch the lights on, however,
as this will overload the battery.
X Remove the jump lead from earth
point 1and negative terminal 3first,
then from positive terminal 2and positive
terminal 4, each time disconnecting from
the battery on your own vehicle first.
i The message Battery protection:
some convenience functions cur-
rently not available may appear in the
multi-function display. It disappears as
soon as the battery is sufficiently charged.
X Have the battery checked at a qualified
specialist workshop, e.g. a Mercedes-Benz
Service Centre. Towing and tow-starting
Points to remember
G
Risk of accident
If you tow the vehicle, you must use a rigid
towing bar if:
R the engine is not running
R there is a brake system malfunction
R the voltage supply or the vehicle's elec-
trical system is damaged
The electric power steering and the brake
force booster do not work when the engine
is not running. Greater braking force will
then be required and the brake pedal travel
will be longer. If necessary, depress the
brake pedal with maximum force.
Do not tow the vehicle if the key cannot be
turned in the ignition lock. If this is the case,
the steering is locked and the vehicle can-
not be steered.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum per-
missible gross vehicle weight of your vehi-
cle.
It is better to have the vehicle transported
than to have it towed. When towing, observe the legal requirements
in all countries concerned.
!
When towing, pull away slowly and with-
out jerking. If the tractive power is too high,
the vehicles could be damaged.
! Do not use the towing eye for recovery,
as this will damage the vehicle. If in doubt
recover the vehicle with a crane.
! You may tow the vehicle for a maximum
of 50 km. A towing speed of 50 km/h must
not be exceeded.
With towing distances over 50 km, the
entire vehicle needs to be lifted up and
transported.
! On vehicles with KEYLESS GO*: use the
key instead of the KEYLESS GO * button.
Turn the key to position 2in the ignition
lock and set the automatic transmission to
N. Then turn the key back to 0and leave it
in the ignition lock.
! Only secure the tow cable or towing bar
to the towing eyes. You may otherwise
damage the vehicle. Practical advice
* optional
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