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Flat tyre
Your vehicle may be equipped with:
Preparing the vehicle
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Vehicle preparation is not necessary on vehicles with MOE tyres*.
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Stop your vehicle as far away from traffic as possible on solid, non-slippery, level ground.
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Switch on the hazard warning lamps.
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Firmly depress the parking brake.
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Move the selector lever to P.
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All occupants must get out of the vehicle. Make sure that they are not endangered as they do so.
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Make 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.
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Switch off the engine.
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Remove the key from the ignition lock.
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Place the warning triangle more or warning lamps at a suitable distance. Observe legal requirements.
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 | Risk of injury |
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The jack is designed only to raise the vehicle for a short time while a wheel is being changed.
If you intend to work under the vehicle, it must be placed on stands.
Make sure that the jack is placed on a firm, non-slip, level surface. Do not use wooden blocks or similar as jacking supports. Otherwise, the jack will not be able to achieve its load-bearing capacity due to the restricted height.
Do not start the engine at any time while the wheel is being changed.
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Using the TIREFIT kit
You can use the TIREFIT kit to
seal small punctures, particularly those in the tyre tread. You can use TIREFIT
in outdoor temperatures down to -20 °C.
| Risk of accident |
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In the following situations, your safety is at particular risk and TIREFIT is unable to provide breakdown assistance:
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if there are cuts or punctures in the tyre greater than 4 mm
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if the wheel rim is damaged
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if you have driven at very low tyre pressures or on a flat tyre
Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required.
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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Do not remove any foreign objects
which have penetrated the tyre, e.g. screws or nails.
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Remove TIREFIT, the accompanying
"max. 80 km/h" sticker and the electric air pump from the
stowage well underneath the boot floor
more.
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 | Driver's field of vision
sticker |
 | Wheel
sticker |
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| Risk of injury |
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TIREFIT must not come into contact with your skin, eyes or clothing.
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If TIREFIT comes into contact with your eyes or skin, immediately rinse thoroughly with clean water.
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Change out of clothing which has come into contact with TIREFIT immediately.
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If an allergic reaction occurs, consult a doctor immediately.
Keep TIREFIT away from children.
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If TIREFIT is swallowed, immediately rinse your mouth out thoroughly with water and drink plenty of water.
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Do not induce vomiting. Consult a doctor immediately.
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Do not inhale TIREFIT fumes.
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If TIREFIT leaks out, allow it to
dry. It can then be removed like a layer of film.
If you get TIREFIT on your
clothing, have it cleaned as soon as possible with
perchloroethylene.
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| Risk of injury |
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Comply with the manufacturer's safety instructions shown on the sticker on the electric air pump.
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Your vehicle may be equipped with
one of two different air pumps. Version 1 can be identified by the flap, behind
which the hose with the pressure gauge and cable are located; version 2 has a
pressure gauge integrated in the electric air pump.
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| TIREFIT sealant filler
bottle |
| Flap |
 | Recess |
 | On/off switch |
 | Electric connector with
cable |
 | Air pump hose |
 | Flange |
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Remove the cap from valve
 on the faulty
tyre.
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 | Pressure release
screw |
 | Pressure
gauge |
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Insert plug into the socket of the
cigarette lighter * more or into a 12V power socket in your vehicle
more.
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Turn the key to position
1 more in the ignition lock.
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Press on/off switch
on the electric
air pump to I.
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The electric air pump is switched
on. The tyre is inflated.
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First, TIREFIT is pumped into the
tyre. The pressure can briefly rise to around 5 bar.
Do not switch off the
electric pump during this phase.
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Let the electric pump run for
five minutes. The tyre should then have a pressure of at least
1.8 bar.
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Do not operate the electric air pump for longer than six minutes without a break. Otherwise, it may overheat.
The air pump can be operated again once it has cooled down.
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If a pressure of 1.8 bar is not
reached after five minutes:
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Switch off and disconnect the
electric air pump and drive the vehicle forwards or backwards approximately
10 m.
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This distributes the TIREFIT more
evenly.
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Remove TIREFIT filler bottle
from the
electric pump.
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Pump up the tyre
again.
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| Risk of accident |
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If a pressure of 1.8 bar is not achieved after five minutes, the tyre is too badly damaged.
Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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If a tyre pressure of
1.8 bar is reached:
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Press on/off switch
on the electric
air pump to 0.
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The electric air pump is switched
off.
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Disconnect the electric air pump
and stow it away.
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Fold up the warning triangle and
stow it away.
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Pull away
immediately.
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This distributes the TIREFIT more
evenly around the tyre.
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Stop after driving for
approximately ten minutes and check the tyre pressure with the electric air
pump.
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| Risk of accident |
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If the tyre pressure is now lower than 1.3 bar, the tyre is too badly damaged. Do not drive any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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If the tyre pressure is still at
least 1.3 bar, correct it (see fuel filler flap for values).
To increase the tyre
pressure: switch on the electric air pump.
To reduce the tyre
pressure: open pressure release screw
on pressure
gauge .
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Drive to the nearest workshop and
have the tyre changed there.
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Have the TIREFIT kit replaced as
soon as possible at a qualified specialist workshop, e.g. at a Mercedes-Benz
Service Centre.
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| Risk of accident |
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Do not exceed the maximum speed of 80
km/h.
The “max. 80
km/h” sticker must be affixed within the driver's field of vision.
The vehicle's handling characteristics may be affected.
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 | Environmental note |
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Have the used TIREFIT kit disposed of professionally, e.g. at a Mercedes-Benz Service Centre.
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Have the TIREFIT kit replaced
every four years at a qualified specialist workshop, e.g. a Mercedes-Benz
Service Centre.
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Changing a wheel and fitting the spare wheel*
| Risk of accident |
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The wheel dimensions and tyre size of the emergency spare wheel* may differ from those of the standard wheels.
Your vehicle's handling characteristics will change when driving with a collapsible emergency spare wheel*. Adapt your style of driving accordingly.
The collapsible emergency spare wheel* may only be used for a short time. Do not exceed the maximum speed of 80 km/h and do not deactivate ESP®.
Never drive the vehicle with more than one collapsible emergency spare wheel* fitted.
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| Risk of accident |
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Have the collapsible emergency spare wheel* replaced as soon as possible at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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Preparing the vehicle
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Prepare the vehicle as described more.
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Place the wheels in the straight-ahead position.
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Take the following from the stowage well beneath the boot floor:
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Secure the vehicle to prevent it from rolling away.
On level ground: place chocks or similar under the front and rear of the wheel that is diagonally opposite the wheel you wish to change.
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On downhill gradients: place chocks or similar under both wheels of the other axle.
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Raising the vehicle
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| Wheel wrench |
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Using wheel wrench , loosen the bolts on the wheel you wish to change by about one full turn. Do not unscrew the bolts completely.
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| Risk of accident |
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If you fail to position the jack correctly, the vehicle may:
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slip off the jack
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injure you or others
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be damaged
It is thus important to ensure that the jack is positioned correctly in the respective jacking points. Before positioning the jack, remove any dirt that may have collected in the jacking points.
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| Cap for jacking socket |
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| Jacking pin |
| Jacking socket |
| Crank |
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| Centring pin |
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In place of the wheel bolt, screw centring pin from the vehicle tool kit into the thread.
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Unscrew the remaining wheel bolts fully.
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Do not place wheel bolts in sand or on a dirty surface. This could cause damage to the bolt and wheel hub threads.
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Remove the wheel.
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Fitting a new wheel
| Risk of accident |
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Replace damaged or corroded wheel bolts.
Never oil or grease wheel bolts.
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| Risk of accident |
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If a wheel hub thread is damaged, you must not drive the vehicle any further. Consult a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre or Service 24h for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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| Risk of accident |
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Only use wheel bolts that have been designed for the wheel and the vehicle. For safety reasons, Mercedes-Benz recommends that you only use wheel bolts which have been approved for Mercedes-Benz vehicles. Other bolts could work loose.
Do not tighten the wheel bolts completely while the vehicle is still jacked up. The vehicle could topple off the jack.
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Clean the wheel and wheel hub contact surfaces.
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Place the collapsible emergency spare wheel* onto the centring pin and push it on.
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Tighten the wheel bolts until they are finger-tight.
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Unscrew the centring pin.
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Tighten the last wheel bolt until it is finger-tight.
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Inflating the collapsible emergency spare wheel* with the electric air pump
| Risk of accident |
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Pump up the collapsible emergency spare wheel before lowering the vehicle, as you could otherwise damage the wheel rim.
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The electric air pump is located in the stowage well under the boot floor.
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Take the electric air pump out of the stowage well under the boot floor.
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| Flap |
| On/off switch |
| Electric connector with cable |
| Air pump hose with pressure gauge and pressure release screw |
| Union nut |
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Make sure that the key is in position 2 in the ignition lock.
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Press on/off switch on the electric air pump to I.
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The electric air pump is switched on. The tyre is inflated.
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When the tyre pressure is correct, press 0 on the electric air pump switch. Correct tyre pressure:
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Collapsible spare wheel* with specification 185/60-17 93P: 2.5 bar
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Collapsible spare wheel* with specification 175/55-18 95P: 3.5 bar
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Collapsible spare wheel* with specification 175/55-18 91P: 3.0 bar
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Collapsible spare wheel* with specification 175/50-19 97P: 3.5 bar
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Do not operate the electric air pump for longer than six minutes without a break. Otherwise, it may overheat.
The air pump can be operated again once it has cooled down.
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If the tyre pressure is too high:
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Open the pressure release screw on the pressure gauge until the tyre pressure is correct.
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Disconnect the electric air pump and stow it away.
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Lowering the vehicle
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Lower the vehicle. To do this, turn the crank of the jack anti-clockwise until the vehicle is standing firmly on the ground again.
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Pull the jack out of the jacking socket.
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Place the jack to one side.
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| Risk of accident |
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Have the tightening torque checked immediately after a wheel is changed. The wheels could work loose if they are not tightened to a torque of 130 Nm.
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Turn the jack back to its initial position and store it and the rest of the vehicle tool kit in the boot.
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Push the tab of the jacking socket cap under the top edge of the hole.
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Push on the cap evenly until it snaps into place.
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Make sure that the lugs do not break off and that the plastic retainer strap is not trapped.
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Pack the faulty wheel in the protective film included with the collapsible emergency spare wheel* and transport the wheel in the boot.
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When you are driving with the collapsible emergency spare wheel* fitted, the tyre pressure loss warning system* or the electronic Run Flat Indicator* cannot function reliably.
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Stowing a used collapsible emergency spare wheel*
If you wish to stow a used collapsible emergency spare wheel* in the vehicle, you must follow the steps below, otherwise you will not be able to stow it. We recommend that this work is carried out at a specialist workshop.
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Only place the collapsible emergency spare wheel* in the vehicle when it is dry. Otherwise, moisture may remain in the boot.
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Unscrew the valve cap from the valve.
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Remove the valve extractor from the vehicle tool kit.
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Unscrew the valve insert from the valve and release the air.
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Fully deflating the tyres can take a few minutes.
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Screw the valve insert back into the valve.
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Screw the valve cap back on
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Put the protective film provided over the collapsible emergency spare wheel*.
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Store the collapsible emergency spare wheel* in the spare wheel well under the luggage compartment.
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Fasten the collapsible emergency spare wheel* in place through the protective film using the screw.
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MOExtended run-flat system*
The MOExtended run-flat system must only be used in conjunction with the tyre pressure loss warning system or the tyre pressure monitor.
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The maximum permissible distance which can be driven in run-flat mode depends on the load in the vehicle. It is 50 km if the vehicle is partially laden and 30 km if fully laden.
The maximum range that can be driven in emergency operation is measured from the point at which the pressure loss warning message appears in the multi-function display.
You must not exceed a maximum speed of 80 km/h.
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Vehicles featuring the MOExtended run-flat system are not equipped with the TIREFIT kit*.
It is therefore recommended to additionally equip your vehicle with the TIREFIT kit* when fitting tyres that do not feature run-flat properties, e.g. winter tyres.
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A TIREFIT kit* is available from any qualified specialist workshop, e.g. a Mercedes-Benz Service Centre.
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| Risk of accident |
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The handling characteristics of your vehicle deteriorate in run-flat mode, for example:
Adapt your driving style accordingly and avoid sudden changes in direction and sudden acceleration, as well as driving over obstacles (i.e. kerbs, potholes), and driving off-road. This is particularly the case when the vehicle is heavily laden.
The maximum permissible distance that can be driven in run-flat mode depends to a large extent on the loads placed on the vehicle. It can be shorter due to high speeds, a heavy load, sudden acceleration and/or manoeuvring, the road surface condition, outside temperature, etc., or further if you drive carefully and conservatively.
Do not continue to drive in run-flat mode if:
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you hear banging noises
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the vehicle starts to shake
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you see smoke and smell rubber
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ESP® is intervening constantly
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there are tears in the sidewalls of the tyre
After driving in run-flat mode, you must have the rims checked for damage at a qualified specialist workshop which has the necessary specialist knowledge and tools to carry out the work required. The faulty tyre must be replaced in every case.
Mercedes-Benz recommends that you use a Mercedes-Benz Service Centre for this purpose. In particular, work relevant to safety or on safety-related systems must be carried out at a qualified specialist workshop.
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On a vehicle with MOExtended tyres, only MOExtended spare tyres should be used. These must be of the size specified for the vehicle.
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