Page 225 of 273

Flat tyre
222 G
Risk of accident
If a pressure of 1.8 bar is not achieved afte r
five minutes, the tyre is too badly damaged.
Do not drive any further. Consult a qualified
specialist workshop which has the neces-
sary specialist knowledge and tools to carry
out the work required. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop.
If a tyre pressure of 1.8 bar is reached:
X Press on/off switch 4on the electric air
pump to 0.
The electric air pump is switched off.
X Disconnect the electric air pump and stow
it away .
X Fold up the warning triangle and stow it
away .
X Pull away immediately.
This distributes the TIREFIT more evenly
around the tyre.
X Stop after driving for approximately ten
minutes and check the tyre pressure with
the electric air pump. G
Risk of accident
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 neces -
sary specialist knowledge and tools to carry
out the work required. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop.
X 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 pres-
sure release screw aon pressure
gauge b.
X Drive to the nearest workshop and have the
tyre changed there.
X Have the TIREFIT kit replaced as soon as
possible at a qualified specialist workshop ,
e.g. at a Mercedes-Benz Service Centre. G
Risk of accident
Do not exceed the maximum speed of 80
km/h.
The “max. 80 km/h” sticker must be affixe d
within the driver's field of vision.
The vehicle's handling characteristics may
be affected. H
Environmental not
e
Have the used TIREFIT kit disposed of pro-
fessionally, e.g. at a Mercedes-Benz
Service Centre.
X Have the TIREFIT kit replaced every fou r
years at a qualified specialist workshop ,
e.g. a Mercedes-Benz Service Centre. Practical advice
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Flat tyre
223
Version
2 1
TIREFIT sealant filler bottle
2 Recess
3 On/off switch
4 Electric connector with cable
5 Air pump hos e
6 Flange
X Pull connector with cable 4and air pump
hose 5from the housing.
X Screw air pump hose 5onto flange 6of
TIREFIT filler bottle 1.
X Place TIREFIT sealant filler bottle 1head
downwards into recess 2of the electric
air pump. 7
Valve
8 Filler hos e
X Remove the cap from valve 7on the faulty
tyre.
X Screw filler hose 8onto valve 7.
X Insert plug 4into the socket of the ciga-
rette lighter* (Y page 141) or into a 12V
power socket in your vehicle
( Y page 141).
X Turn the key to position 1(Y page 59) in
the ignition lock . X
Press on/off switch 3on the electric air
pump to I.
The electric air pump is switched on. The
tyre is inflated.
i First, TIREFIT is pumped into the tyre. The
pressure can briefly rise to around 5 bar.
Do not switch off the electric pump dur-
ing this phase .
X Let the electric pump run for five minutes.
The tyre should then have a pressure of at
least 1.8 bar.
! 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.
If a pressure of 1.8 bar is not reached after
five minutes:
X Switch off and disconnect the electric ai r
pump and drive the vehicle forwards or
backwards approximately 10 m.
This distributes the TIREFIT more evenly.
X Remove TIREFIT filler bottle 1from the
electric pump .
X Pump up the tyre again. Practical advice
* optional
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Flat tyre
224 G
Risk of accident
If a pressure of 1.8 bar is not achieved afte r
five minutes, the tyre is too badly damaged.
Do not drive any further. Consult a qualified
specialist workshop which has the neces-
sary specialist knowledge and tools to carry
out the work required. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop.
If a tyre pressure of 1.8 bar is reached:
X Press on/off switch 3on the electric air
pump to 0.
The electric air pump is switched off.
X Disconnect the electric air pump and stow
it away .
X Fold up the warning triangle and stow it
away .
X Pull away immediately.
This distributes the TIREFIT more evenly
around the tyre.
X Stop after driving for approximately ten
minutes and check the tyre pressure with
the electric air pump. G
Risk of accident
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 neces -
sary specialist knowledge and tools to carry
out the work required. Mercedes-Benz rec-
ommends that you use a Mercedes-Benz
Service Centre for this purpose. In particu-
lar, work relevant to safety or on safety-
related systems must be carried out at a
qualified specialist workshop. 9
Pressure release button
a Pressure gauge
X 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 :press yellow
pressure release button 9next to pres -
sure gauge a.
X Drive to the nearest workshop and have the
tyre changed there .
X Have the TIREFIT kit replaced as soon as
possible at a qualified specialist workshop ,
e.g. at a Mercedes-Benz Service Centre. G
Risk of acciden
t
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. H
Environmental note
Have the used TIREFIT kit disposed of pro-
fessionally, e.g. at a Mercedes-Ben z
Service Centre.
X Have the TIREFIT kit replaced every fou r
years at a qualified specialist workshop ,
e.g. a Mercedes-Benz Service Centre. Practical advice
171_AKB; 3; 4, en-GB
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Flat tyre
225Changing a wheel and fitting the spar
e
wheel * G
Risk of accident
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 collapsibl e
emergency spare wheel*. Adapt your style
of driving accordingly.
The collapsible emergency spare wheel*
must only be used for a short time. Do not
exceed the maximum speed of 80 km/h
and do not deactivate ES P®
.
Never drive the vehicle with more than one
collapsible emergency spare wheel* fitted.G
Risk of accident
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 pur-
pose. In particular, work relevant to safety or on safety-related systems must be car-
ried out at a qualified specialist workshop.
Preparing the vehicle X
Prepare the vehicle as described
(Y page 218).
X Place the wheels in the straight-ahead posi-
tion.
X Take the following from the stowage well
beneath the boot floor:
R
the collapsible emergency spare wheel*
R the vehicle tool kit
R the wheel chock
R the jack
R the air pump
X 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.
X On downhill gradients: place chocks or
similar under both wheels of the other axle. Raising the vehicle
1
Wheel wrenc h
X Using wheel wrench 1, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com -
pletely. G
Risk of accident
If you fail to position the jack correctly, the
vehicle may :
R slip off the jack
R injure you or others
R be damaged
It is thus important to ensure that the jack
is positioned correctly in the respective
jacking points. Before positioning the jack , Practical advice
* optional
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Page 229 of 273

Flat tyre
226 remove any dirt that may have collected in
the jacking points
.
The jacking points for the jack are located
behind the wheel housings of the front wheels
and in front of the wheel housings of the rear
wheels. 1
Jacking point
2 Jack
3 Crank
X Position jack 2at jacking point 1. X
Make sure that the base of the jack is posi-
tioned directly under jacking point 1.
X Turn crank 3until the tyre is raised a max-
imum of 3 cm from the ground.
X Unscrew the uppermost wheel bolt com-
pletely. 1
Centring pin
X In place of the wheel bolt, screw centring
pin 1from the vehicle tool kit into the
thread.
X Unscrew the remaining wheel bolts fully.
! Do not place wheel bolts in sand or on a
dirty surface. This could cause damage to
the bolt and wheel hub threads.
X Remove the wheel.
Fitting a new wheel G
Risk of acciden
t
Replace damaged or corroded wheel bolts.
Never oil or grease wheel bolts. Practical advice
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Flat tyre
227G
Risk of accident
If a wheel hub thread is damaged, you mus t
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 rel-
evant to safety or on safety-related systems
must be carried out at a qualified specialist
workshop. G
Risk of accident
Only use wheel bolts that have bee n
designed for the wheel and the vehicle. For
safety reasons, Mercedes-Benz recom -
mends 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 completel y
while the vehicle is still jacked up. The vehi -
cle could topple off the jack.
X All models except vehicles with 7-spok e
light-alloy wheels: remove the container
with the wheel bolts from the emergenc y
spare wheel and take out the wheel bolts. Wheel bolts
1
Wheel bolts for 7-spoke design light-alloy
wheels, collapsible emergency spare
wheel*
2 Wheel bolts for other light-alloy wheels
3 Collapsible emergency spare wheel*
X Clean the wheel and wheel hub contac t
surfaces. X
Place the collapsible emergency spare
wheel*o nto the centring pin and push it on. X
Tighten the wheel bolts until they are fin-
ger-tight. Practical advice
* optional
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Flat tyre
228
X
Unscrew the centring pin.
X Tighten the last wheel bolt until it is finger-
tight .
Inflating the collapsible emergency
spare wheel* with the electric air pump G
Risk of accident
Pump up the collapsible emergency spare
wheel before lowering the vehicle, as yo u
could otherwise damage the wheel rim.
The electric air pump is located in the stow -
age well under the boot floor.
X Take the electric air pump out of the stow-
age well under the boot floor. 1
Flap
2 On/off switch 3
Electric connector with cable
4 Air pump hose with pressure gauge and
pressure release scre w
5 Union nut
X Open flap 1.
X Pull connector 3and air hose 4out of
the housing.
X Make sure that the pressure release screw
on the pressure gauge is closed.
X Remove the cap from the valve on the tyre.
X Screw union nut 5on air hose 4onto the
valve.
X Insert plug 3into the cigarette lighter
socket* (Y page 141 )or into a 12V socket
in your vehicle (Y page 141).
X Make sure that the key is in position 2in
the ignition lock .
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 3.5 bar has been
reached, press 0on the electric air pump
switch.
The electric air pump is switched off. !
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.
If the tyre pressure is higher than 3.5 bar:
X Open the pressure release screw on the
pressure gauge until the tyre pressure is
correct.
X Disconnect the electric air pump and stow
it away .
Lowering the vehicle X
Lower the vehicle. To do this, turn the crank
of the jack anti-clockwise until the vehicle
is standing firmly on the ground again.
X Place the jack to one side. Practical advice
* optional
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Flat tyre
2291
–5 Wheel bolts
X Tighten the wheel bolts evenly in a cross-
wise pattern in the sequence indica-
ted (1 to5 ). The tightening torque must
be 110 Nm. G
Risk of acciden
t
Have the tightening torque checked imme-
diately after a wheel is changed. The wheels
could work loose if they are not tightened
to a tightening torque of 110 Nm.
X Turn the jack back to its initial position and
store it and the rest of the vehicle tool kit
in the boot.
i If the roof is closed you can transport the
faulty wheel in the boot. A protective film is provided with the collapsible emergency
spare wheel.
X Pack the faulty wheel in the protective film
included with the collapsible emergency
spare wheel* and transport the wheel in
the boot .
i When you are driving with the collapsible
emergency spare wheel* fitted, the tyre
pressure loss warning system* cannot
function reliably.
Stowing a used collapsible emergency
spare wheel* If you wish to stow a used collapsible emer-
gency 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.
!
Only place the collapsible emergency
spare wheel* in the vehicle when it is dry.
Otherwise, moisture may remain in the
boot.
X Unscrew the valve cap from the valve .
X Remove the valve extractor from the vehi -
cle tool kit. X
Unscrew the valve insert from the valve and
release the air.
i Fully deflating the tyres can take a few
minutes.
X Screw the valve insert back into the valve .
X Screw the valve cap back on
X Put the protective film provided over the
collapsible emergency spare wheel*.
X Store the collapsible emergency spar e
wheel* in the spare wheel well under the
luggage compartment.
X Fasten the collapsible emergency spar e
wheel* in place through the protective film
using the screw. Practical advice
* optional
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