2010 MERCEDES-BENZ R320 spare tire

X
Removing: Open the tailgate ( Y page 75).
X Lift the cargo compartment floor and
secure it on the upper cargo compartment
lip ( Y page 270).
! To prevent damage, always disengage the
securing hook from upper cargo
compartment lip and lower the cargo
compartment floor before closing the
tailgate.
X Remove the jack from the vehicle tool kit
(Y page 271). X
Remove retaining screw : by turning it
counterclockwise.
i If retaining screw : does not come
loose, turn storage well casing = slightly
counterclockwise. Retaining screw :
should then come loose easily.
X Turn storage well casing = by
approximately 180°.
The electric air pump ( Y page 271) points
towards the rear.
X Remove storage well casing =.
X Remove spare wheel ;.
For information on mounting the spare wheel,
see “Flat tire” ( Y page 319).
Storing the spare wheel after use There are two guide pins in the spare wheel
well that serve to hold the spare wheel in
place. X
Place the spare wheel into the spare wheel
well. X
Make sure the spare wheel is placed
precisely on guide pins :.
X Place storage well casing = (Y page 273)
into the spare wheel.
The electric air pump ( Y page 271) must
point to the rear.
X Turn storage well casing = (Y page 273)
by approximately 180°.
The electric air pump ( Y page 271) points
in direction of travel.
i The storage well casing should now be
positioned according to the mounting
direction indicators (Y page 271).
X Secure the spare wheel by turning retaining
screw : (Y page 273) clockwise.
X Place the jack into the vehicle tool kit
(Y page 271). Where will I find ...?
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Display messages
Possible causes/consequences and
X SolutionsTire
Pressure
Monitor Wheel
Sensor
Missing At least one sensor is defect (e.g. battery is empty).
The respective tire is indicated by
– – instead of the tire
inflation pressure in the multifunction display.
X Have the Advanced TPMS checked at an authorized
Mercedes-Benz Center.
X Have the wheel sensors installed at an authorized
Mercedes-Benz Center. At least one wheel without appropriate wheel sensors is
mounted (e.g. spare tire).
The respective tire is indicated by
– – instead of the tire
inflation pressure in the multifunction display.
X Have the Advanced TPMS checked at an authorized
Mercedes-Benz Center.
X Have the wheel sensors installed at an authorized
Mercedes-Benz Center. Tire
Pressure
Monitor Currently
Unavailabl
e The Advanced TPMS cannot monitor the tire inflation pressure
due to a nearby radio interference source or insufficient
power supply.
As
soon as the causes of the malfunction have been rectified,
the Advanced TPMS becomes active again automatically after
a few minutes of driving. Tire
Pressure(s
) Please
Correct The tire inflation pressure is too low in at least one tire.
or
The tire inflation pressures of the individual tires differ from
each other significantly.
The tire inflation pressure values are shown in the
multifunction display.
X
Check and correct tire inflation pressure as required
(Y page 230).
X Restart the Advanced TMPS ( Y page 235).Caution:
Tire
Defect At least one tire is deflating.
The respective tire is indicated in the multifunction display.
X
Carefully bring the vehicle to a halt, avoiding abrupt
steering and braking maneuvers.
X If necessary, change the wheel (Y page 319). 284
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Tires
Problem
Possible causes/consequences and
X Solutionsh
USA only:
Combination
low
tire pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
illuminates
continuously. The Advanced TPMS detects a loss of pressure in at least one tire.
X
Carefully bring the vehicle to a halt, avoiding abrupt steering and
braking maneuvers. Observe the traffic situation around you.
X Read and observe messages in the multifunction display
(Y page 274).
If the tire inflation pressure in the respective tire(s) has (have) been
corrected, the combination low tire pressure/TPMS malfunction
telltale goes out after a few minutes of driving. h
USA only:
Combination
low

tire pressure
telltale/TPMS
malfunction
telltale for the
Advanced TPMS
flashes 60
seconds and
then stays
illuminated. There is a malfunction in the Advanced TPMS.
X
Read and observe messages in the multifunction display
(Y page 274).
X Have the Advanced TPMS checked at an authorized Mercedes-
Benz Center.
After the malfunction has been remedied, the combination low tire
pressure/TPMS
malfunction telltale goes out after a few minutes
of driving. G
Warning!
Each tire, including the spare (if provided),
should be checked at least once a month
when cold and inflated to the inflation
pressure recommended by the vehicle
manufacturer on the Tire and Loading
Information placard on the driver’s door B-
pillar

or the tire inflation pressure label on the
inside of the fuel filler flap. If your vehicle has
tires of a different size than the size indicated
on the Tire and Loading Information placard
or the tire inflation pressure label, you should
determine the proper tire inflation pressure
for those tires.
As an added safety feature, your vehicle has
been equipped with a tire pressure monitoring
system (TPMS) that illuminates a low tire
pressure telltale when one or more of your
tires are significantly underinflated.
Accordingly, when the low tire pressure
telltale illuminates, you should stop and check your tires as soon as possible, and inflate
them to the proper pressure. Driving on a
significantly

underinflated tire causes the tire
to overheat and can lead to tire failure.
Underinflation also reduces fuel efficiency
and tire tread life, and may affect the vehicle’s
handling and stopping ability. Please note that
the TPMS is not a substitute for proper tire
maintenance, and it is the driver’s
responsibility to maintain correct tire
pressure, even if underinflation has not
reached the level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped with a
TPMS malfunction indicator to indicate when
the system is not operating properly. The
TPMS malfunction indicator is combined with
the low tire pressure telltale. When the
system detects a malfunction, the telltale will
flash for approximately 1 minute and then
remain continuously illuminated. This 306
What to do if …
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Installing wiper blades
Front wiper blades X
With guide tab = sliding into opening ?,
place wiper blade : onto wiper arm in
direction of arrow.
X Fold wiper blade : towards wiper arm.
Tabs ; (Y page 318) must engage into
both recesses of attachment ;.
X Check whether the wiper blade is securely
fastened.
X Fold the wiper arm backward to rest on the
windshield.
Make sure you hold on to the wiper arm
when folding it back.
! Make sure the wiper blades are installed
properly. Improperly installed wiper blades
may cause windshield damage.
Rear wiper blade X
Insert wiper blade ; into wiper arm :.
X Hold wiper arm : and engage wiper
blade ; by pushing it in direction of arrow
until it locks into place.
X Check whether the wiper blade is securely
fastened.
X Fold wiper arm : to rest on the rear
window.
Make sure to hold on to the wiper when
folding the wiper arm back.
! Make sure the wiper blade is installed
properly. An improperly installed wiper
blade may cause rear window damage. Flat tire
Safety notes
Your vehicle may be equipped with an
MOExtended system or a spare wheel with
collapsible tire. Vehicles with an MOExtended
system do not have a spare wheel or a TIREFIT
kit.
For information on your vehicle’s equipment,
see “Rims and tires” ( Y page 347). G
Warning!
The dimensions of the spare wheel are
different from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style
accordingly.
The spare wheel is for temporary use only.
When driving with a spare wheel mounted,
ensure proper tire inflation pressure and do
not exceed a vehicle speed of 50 mph
(80 km/h).
Contact the nearest authorized Mercedes-
Benz Center as soon as possible to have the
spare wheel replaced with a regular road
wheel.
Never operate the vehicle with more than one
spare wheel mounted. Flat tire
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Do not switch off the ESP
®
when a spare
wheel is mounted. G
Warning!
Vehicles with AIRMATIC:
Do not open or close any doors or the tailgate
while mounting a spare wheel. The vehicle
could rise or lower to a previously selected
level. You or others could be injured as a
result. Preparing the vehicle
X Vehicles with AIRMATIC:
Make sure the vehicle level is set to
highway level

(Y page 153).
X Whenever possible, park the vehicle in a
safe

distance from moving traffic on a hard,
flat surface.
X Turn on the hazard warning flasher.
X Turn the steering wheel so that the front
wheels are in a straight-ahead position.
X Engage the parking brake.
X Shift the automatic transmission into park
position P.
X Turn off the engine.
X Remove the SmartKey from the starter
switch.
or
X Vehicles 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 can then be closed again.
Open doors only when conditions are safe
to do so.
X Vehicles with KEYLESS-GO: Remove the
KEYLESS-GO start/stop button from the
starter switch.
X Have any passenger exit the vehicle at a
safe distance from the roadway. Open
doors only when conditions are safe to do
so.
i Vehicles retrofitted with TIREFIT kit: Only use the power outlet in the second-
row footwell for electric air pump
operation.
You can use the power outlet even when
the ignition is switched off, e.g. in order to
inflate the collapsible tire.
An emergency shut-off feature is designed
to prevent the vehicle’s on-board voltage
from dropping below a minimum level. If
the on-board voltage drops to this
minimum level, the power outlets are
switched

off automatically to help preserve
engine starting power. Sealing tires with TIREFIT
This section applies to vehicles retrofitted
with a TIREFIT kit only.
Small

tire punctures, particularly those in the
tread, can be sealed with TIREFIT.
TIREFIT can be used in ambient temperatures
down to -4‡ (-20†). G
Warning!
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.
X Foreign objects (e.g. screws or nails)
should not be removed from the tire.
X Take the TIREFIT kit, the sticker, and the
electric air pump out of the vehicle. 320
Flat tire
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(80 km/h) or below with the recommended
tire inflation pressure.
X Contact an authorized Mercedes-Benz
Center

as soon as possible to obtain a new
TIREFIT kit.
X Bring used TIREFIT materials to an
authorized Mercedes-Benz Center for
proper disposal.
X Replace your TIREFIT container every
4 years. Replacement containers are
available

at any authorized Mercedes-Benz
Center. Mounting the spare wheel
Introduction X
Prepare the vehicle as described
(Y page 320).
X Take the following out of the vehicle:
R
spare wheel
R jack
R wheel wrench
R collapsible wheel chock
R alignment bolt
R electric air pump
For information on where to find the
respective items, see “Where will I find ...?”
(Y page 270) and ( Y page 272).
i Vehicles without spare wheel are not
factory-equipped

with the tools required for
a wheel change such as a jack or a wheel
wrench. Some tools required for a wheel
change are specific to your vehicle.
Contact an authorized Mercedes-Benz
Center to obtain the tools approved for
your vehicle. This section describes the
wheel change using the tools approved and
recommended for your vehicle. Lifting the vehicle G
Warning!
When jacking up the vehicle, only use the jack
which has been specifically approved by
Mercedes-Benz for your vehicle.
The

jack is designed exclusively for jacking up
the vehicle at the jack take-up brackets built
into both sides of the vehicle. Make sure the
jack arm is fully seated in the jack take-up
bracket. The jack must always be vertical
when in use, especially on inclines or
declines.
The jack is intended only for lifting the vehicle
briefly for wheel changes. It is not suited for
performing maintenance work under the
vehicle. To help avoid personal injury, use the
jack only to lift the vehicle during a wheel
change.
Never get beneath the vehicle while it is
supported by the jack. Keep hands and feet
away from the area under the lifted vehicle.
Always lower the vehicle onto sufficient
capacity jackstands before working under the
vehicle.
Always engage the parking brake firmly and
block the wheels with wheel chocks or other
sizeable objects before raising the vehicle
with the jack. Do not disengage the parking
brake while the vehicle is raised.
Make sure that the ground on which the
vehicle is standing and where you place the
jack is solid, level and not slippery. If
necessary, use a large underlay. On slippery
surfaces, such as tiled floors, you should use
a non-slip underlay, for example a rubber mat.
Do not use wooden blocks or similar objects
to support the jack. Otherwise the jack may
not be able to achieve its load-bearing
capacity if it is not at its full height.
Never start the engine when the vehicle is
raised.
Also observe the notes on the jack. 324
Flat tire
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Removing the wheel
X
Unscrew the uppermost wheel bolt and
remove it.
X Replace this wheel bolt with alignment
bolt :.
X Remove the remaining bolts.
! Do not place wheel bolts in sand or dirt.
This could result in damage to the wheel
bolts and wheel hub threads.
X Remove the wheel.
Attaching the spare wheel G
Warning!
Inflate collapsible tire only after the wheel is
properly attached.
Inflate the collapsible tire using the electric
air pump before lowering the vehicle.
G
Warning!
Always replace wheel bolts that are damaged
or rusted.
Never apply oil or grease to wheel bolts.
Damaged wheel hub threads should be
repaired immediately. Do not continue to
drive under these circumstances! Contact an
authorized Mercedes-Benz Center or call
Roadside Assistance.
Incorrect wheel bolts or improperly tightened
wheel bolts can cause the wheel to come off.
This could cause an accident. Make sure to
use the correct wheel bolts. G
Warning!
Only use genuine Mercedes-Benz wheel bolts.
Other wheel bolts may come loose.
Do not tighten the wheel bolts when the
vehicle is raised. Otherwise the vehicle could
fall off the jack. Wheel bolt
: must be used for 19" and 20"
light alloy wheels. Wheel bolt ; must be used
for the spare wheel. The wheel bolts for the
spare wheel are located in the cargo
compartment with the spare wheel.
! Wheel bolts ; must be used when
mounting the spare wheel with collapsible
tire. The use of any wheel bolts other than
wheel bolts ; for the spare wheel with
collapsible tire will damage the vehicle’s
brakes. G
Warning!
Make sure to use the original length wheel
bolts when remounting the original wheel
after it has been repaired.
X Clean contact surfaces of wheel and wheel
hub.
! To avoid paint damage, place wheel flat
against hub and hold it there while
installing first wheel bolt. Flat tire
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X
Guide the spare wheel onto the alignment
bolt and push it on.
X Insert the wheel bolts and tighten them
slightly.
X Unscrew the alignment bolt.
X Install the last wheel bolt and tighten it
slightly.
X Inflate the collapsible tire ( Y page 328).
Inflating the collapsible tire G
Warning!
Inflate collapsible tire only after the wheel is
properly attached.
Inflate the collapsible tire using the electric
air pump before lowering the vehicle.
G
Warning!
Observe safety instructions on air pump label.
! Do not lower the vehicle before inflating
the collapsible tire. Otherwise the rim may
be damaged.
Your vehicle may be equipped with either of
two versions of the electric air pump:
R Version 1: The air hose with pressure
gauge and the electrical plug are located
behind a flap.
R Version 2: The pressure gauge is located
in the pump housing. The air hose and
electrical plug are located at the bottom of
the pump housing. The following description applies to both
versions. Differences in usage are expressly
declared.
Version 1
Version 2
X
Version 1 only: Open flap : on electric
air pump.
X Version 1 only: Pull out electrical plug
= and air hose with pressure gauge and
vent screw ?.
X Version 2 only: Pull electrical plug = and
the air hose out of the pump housing
bottom.
X Version 1 only: Close vent screw on air
hose ?.
X Remove the valve cap from the collapsible
tire valve.
X Screw union nut A onto the collapsible tire
valve.
X Make sure air pump switch ; is set to 0.
X Insert electrical plug = into the power
outlet in the second-row footwell
(Y page 205). 328
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