
XEnsure that clamping claw A sits flush
against the inner edge of roof rail F.
If necessary, adjust the span width of the
crossbar ( Y page 276).XSlightly tighten up bolts ? on both sides
in a clockwise direction.XTighten up bolts ? on the front and rear
crossbars. Observe the tightening torque of
4 lb/ft (6 Nm) .GWarning!
Have the tightening torque checked after
mounting the crossbars. The screws could
come loose if they are not tightened to a
torque of 4 lb-ft (6 Nm).
XAttach and lock protective caps ;.XStow the key and Allen key in the stowage
compartment under the cargo
compartment floor again ( Y page 274).
Setting the span width of the crossbars
GWarning!
Only install the crossbars at the exact
locations designated on the roof rails. The
designated locations for the front crossbars
are between the markings engraved on the
inside of the roof rails. The designated
locations for the rear crossbars are between
the gaps on the roof rails.
Otherwise, the crossbars, mounted
accessories and the objects attached to them
could come loose from the vehicle causing an
accident, thereby injuring you and other
persons and/or causing damage to property,
including damage to your vehicle.
The span width of the crossbars for your
vehicle is set at the factory. The span widths
only fit in the intended positions on the
vehicle.
Only install the crossbars at the marked
positions and observe stickers = FRONT and
REAR.
?Bolt for the clamping clawAClamping clawGBolts for adjusting the span width (2 per
side)HCover stripXPull cover strip H out of the groove until
bolts G on both ends of the crossbar are
visible.XTurn bolts G on both sides approximately
two turns counterclockwise.XAlign the crossbars on the marked
positions on the roof rails.XEnsure that clamping claws A sit flush
with the roof rails on both sides. If
necessary, pull out or slide into clamping
claws A.XTighten bolts G. Observe the tightening
torque of 4 lb/ft (6 Nm) .
The width of the clamping claw is not set
correctly.GWarning!
Have the tightening torque checked after
mounting the crossbars. The screws could
come loose if they are not tightened to a
torque of 4 lb-ft (6 Nm).
XPress cover strip H piece by piece into the
groove of the crossbar.XInstall the crossbars as described
( Y page 274).276Stowage areasLoading, stowing and features
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Removing the crossbars:Key;Protective cap=Sticker FRONT (or REAR)?Bolt for the clamping clawAClamping clawXUnlock protective cap ; using key :.XRemove protective cap ;.XTurn the bolts of clamping claws A
counterclockwise until the crossbars can
be removed from the roof rails.
Shortening the cover strip
The cover strips reduce the wind noise
caused by the crossbars. If additional roof
accessories are installed it may be necessary
to shorten the cover strips.
HCover stripXPull cover strip H out of the groove.XInstall the roof accessory on the crossbars.XPlace cover strip H flush with the roof
accessory and mark the end of the crossbar
on the cover strip.XCut off cover strip H at the marked
position.XPress cover strip H into the groove of the
crossbar, piece by piece.
i Cover strips are available as Mercedes-
Benz accessories. Contact an authorized
Mercedes-Benz Center.
Features
Cup holder
Points to observe before use
GWarning
In order to help prevent spilling liquids on
vehicle occupants and/or vehicle equipment,
only use containers that fit into the cup
holder. Use lids on open containers and do
not fill containers to a height where the
contents, especially hot liquids, could spill
during braking, vehicle maneuvers, or in an
accident. Liquids spilled on vehicle occupants
may cause serious personal injury. Liquids
spilled on vehicle equipment may cause
damage not covered by the Mercedes-Benz
Limited Warranty.
When not in use, keep the cup holder closed.
An open cup holder may cause injury to you
or others when contacted during braking,
vehicle maneuvers, or in an accident.
Keep in mind that objects placed in the cup
holder may come loose during braking,
vehicle maneuvers, or in an accident and be
thrown around in the vehicle interior. Objects
thrown around in the vehicle interior may
cause an accident and/or serious personal
injury.
Cup holder in the center console
In the upper center console, there is a cup
holder and a removable support with a card
holder
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XVehicles without KEYLESS-GO: remove
the key from the ignition lock.
XVehicles with KEYLESS-GO: open the
driver's door.
The on-board electronics have status 0,
which is the same as the key having been
removed.
XVehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 147).
XAll occupants must get out of the vehicle.
Make sure that they are not endangered as
they get out of the vehicle.
XMake sure that no one is near the danger
area whilst a wheel is being changed.
Anyone who is not directly assisting in the
wheel change should, for example, stand
behind the barrier.
XGet out of the vehicle. Pay attention to
traffic conditions when doing so.
XClose the driver's door.
iOnly operate the electric air pump using
the socket in the footwell of the 2nd row of
seats (Y page 281), even if the ignition is
turned off.
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.
TIREFIT kit
Using the TIREFIT kit
You can use the TIREFIT kit to seal small
punctures, particularly those in the tire tread.
You can use TIREFIT at outside temperatures
down to -4 ‡ (-20 †).
GWarning
TIREFIT is a limited repair device. TIREFIT
cannot be used for cuts or punctures larger
than approximately 0.16 in (4 mm) and tire
damage caused by driving with extremely low
tire inflation pressure, or on a flat tire, or a
damaged wheel.
Do not drive the vehicle under such
circumstances.
Contact the nearest authorized Mercedes-
Benz Center for assistance or call roadside
assistance.
XDo not remove any foreign objects which
have penetrated the tire, e.g. screws or
nails.
XRemove the TIREFIT kit, the accompanying
"max. 80 km/h" sticker and the electric air
pump from the stowage well underneath
the trunk floor (Y page 310).
XAffix part : of the sticker within the
driver's field of vision.
XAffix part ; of the sticker near the valve
on the wheel with the defective tire.
GWarning!
Take care not to allow the contents of TIREFIT
to come in contact with hair, eyes or clothing.
RIf TIREFIT comes into contact with your
eyes or skin, immediately rinse thoroughly
with clean water.
RChange out of clothing which has come into
contact with TIREFIT immediately.
RIn case of allergic reaction or rash, consult
a physician immediately.
Keep TIREFIT away from children.
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If after five minutes a pressure of 180 kPa
(1.8 bar/26 psi) has not been achieved, see
( Y page 315).
Tire pressure of 180 kPa (1.8 bar/
26 psi) is not achieved
If after five minutes a pressure of 180 kPa
(1.8 bar/26 psi) has not been achieved:
XPress the on/off switch on the electric air
pump to 0.
The electric air pump is switched off.XUnscrew the filler hose from the valve.XVery slowly drive forwards or reverse
approximately 30 ft (10 m).XPump up the tire again.GWarning
If after five minutes a pressure of 180 kPa
(1.8 bar/26 psi) cannot be achieved, the tire
is too badly damaged to be repaired reliably
using TIREFIT.
In this case TIREFIT cannot seal the tire
properly.
Do not drive any further.
Contact the nearest authorized Mercedes-
Benz Center for assistance or call roadside
assistance.
Tire pressure of 180 kPa (1.8 bar/
26 psi) is achieved
XPress the on/off switch on the electric air
pump to 0.
The electric air pump is switched off.XRemove the TIREFIT kit from the wheel.GWarning
The air hose may still be hot. Exercise proper
caution to avoid burning yourself when
detaching the electric air pump.
! After use, excess TIREFIT may run out of
the filler hose. This could cause stains.
Therefore, place the filler hose in the plastic
bag which contained the TIREFIT kit.
XStow the TIREFIT kit and the electric air
pump.XPull away immediately .GWarning
Do not exceed a vehicle speed of 50 mph
(80 km/h ). A TIREFIT repair is not designed to
operate at higher speeds.
The sticker must be attached on the
instrument cluster where it will be easily seen
by the driver.
Vehicle handling characteristics of a TIREFIT
repaired tire may change. Adapt your driving
accordingly.
XStop after driving for approximately ten
minutes and check the tire pressure with
the electric air pump.GWarning
If tire inflation pressure has fallen below
130 kPa (1.3 bar/26 psi) do not continue to
drive the vehicle.
Park your vehicle safely away from the
roadway and contact the nearest authorized
Mercedes-Benz Center or roadside
assistance.
Have the damaged tire replaced.
XCorrect the tire inflation pressure if it is at
least 130 kPa (1.3 bar/26 psi) (for values
see Tire and Load Information placard on
the driver's side B-pillar or tire inflation
pressure table inside the fuel filler flap).XTo increase the tire pressure: switch on
the electric air pump.Flat tire315Roadside assistanceBA 164.8 USA, CA Edition B 2011; 1; 2, en-USd2sboikeVersion: 3.0.3.52010-04-21T15:08:44+02:00 - Seite 315Z

Towing and tow-starting
Important safety notes
GWarning
If you tow the vehicle, you must use a rigid
towing 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 the vehicle's electrical system.
With the engine not running, there is no power
assistance for the brake and steering
systems. You will then need considerably
more force to steer and to brake and the
brake pedal travel will be longer. If necessary,
depress the brake pedal with maximum force.
Before towing away, make sure that the
steering can be moved and is not locked.
If you tow or tow-start another vehicle, its
weight must not exceed the maximum
permissible gross vehicle weight of your
vehicle.
It is better to have the vehicle transported
than to have it towed.
! You may only tow the vehicle a maximum
distance of 30 miles (50 km). A towing
speed of 30 mph (50 km/h) must not be
exceeded.
For towing distances over 30 miles
(50 km), the vehicle must loaded onto a
transporter.
! Only secure the tow rope or tow bar at the
towing eyes. Otherwise, the vehicle could
be damaged.
! Do not use the towing eye for recovery,
as this could damage the vehicle. If in
doubt, recover the vehicle with a crane.
! Drive slowly and smoothly when towing.
Excessive tractive power could otherwise
damage the vehicles.
! Do not tow with sling-type equipment.
This could damage the vehicle.
! When towing vehicles with KEYLESS-GO,
use the key instead of the Start/Stop
button. Otherwise, the automatic
transmission may shift to position P when
the driver's or front-passenger door are
opened, which could lead to damage to the
transmission.
! Vehicles with differential locks: make
sure that the differential locks are in
automatic mode. When towing, the
differential locks must not be switched on
by hand. This could otherwise damage the
transmission.
! Vehicles with automatic transmission
must not be started by tow-starting. This
could otherwise damage the transmission.
! Vehicles with 4MATIC must not be towed
with the front or rear axle raised. This could
otherwise damage the transmission.
If the vehicle has suffered transmission
damage, have it carried away on a transporter
or trailer.
The automatic transmission must be in
position N when the vehicle is being towed.
Make sure that the battery is connected and
charged. You will otherwise not be able to:
R turn the SmartKey to position 2 in the
ignition lock.
R shift the automatic transmission to
position N.
i Switch off the automatic locking feature
before the vehicle is towed ( Y page 79).
Otherwise, you could lock yourself out of
the vehicle when pushing or towing the
vehicle.
Installing/removing the towing eye
Installing the towing eye
Vehicles with a trailer tow hitch: if possible
secure the towing device on the trailer tow
hitch ( Y page 209).
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Maximum load on one tire
Maximum load on one tire. This is calculated
by dividing the maximum axle load of one axle
by two.
PSI (pounds per square inch)
Standard unit of measurement for tire
pressure.
Aspect ratio
Relationship between tire height and tire
width in percent.
Tire pressure
Pressure inside the tire applying an outward
force to every square inch of the tire's
surface. The tire pressure is specified in
pounds per square inch (psi), in kilopascal
(kPa) or in bar. The tire pressure should only
be corrected when the tires are cold. For this,
the vehicle must have been stationary for at
least three hours or not have traveled more
than 1.6 km (1 mile) in this time.
Tire tread
The part of the tire that comes into contact
with the road.
Tire bead
The tire bead contains steel wire which is
bound by steel cords that hold the tire on the
wheel rim.
Sidewall
The part of the tire between the tread and the
tire bead.
Weight of optional extras
The combined weight of those optional extras
that weigh more than the replaced standard
part and more than 2.3 kilograms (5 lbs).
These optional extras, such as high-
performance brakes, level control, a roof rack
or a high-performance battery, are not
included in the unladen weight and the weight
of the accessories.
TIN (Tire Identification Number)
A unique identification number which can be
used by a tire manufacturer to identify tires,
for example for a product recall, and thus
identify the purchasers. The TIN is made up
of the manufacturer's identity code, tire size,
tire type code and the manufacturing date.
Load bearing index
The load bearing index (also load index) is a
code that contains the maximum load bearing
capacity of a tire.
Traction
Traction is the result of friction between the
tires and the road surface.
TWR (permissible trailer drawbar
noseweight)
The TWR is the maximum permissible weight
that the ball coupling of the trailer tow hitch
can support.
Wear indicator
Narrow bars (tread wear bars) that are
distributed over the tire tread. If the tire tread
is level with the bars, the wear limit of 1
/ 16 in
(1.6 mm) has been reached.
356Definitions for tires and loadingTires and wheels
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