2012 MERCEDES-BENZ SLK ROADSTER Owners Manual

Collapsible emergency spare wheel
Removing the collapsible emergency
spare wheel The collapsible emergency spare wheel can
be found in the stowage well unde rthe boot
floor.
AMG vehicles: the collapsible emergency
spare wheel is packed in a bag and secured
to a bracket in the boot. Example
X
Turn retaining screw ;anti-clockwise and
remove it.
X Remove collapsible emergency spare
wheel :. AMG vehicles
X
AMG vehicles: loosen tensioning
straps :on both sides.
X Unhook retaining spring hooks ;and =
tensioning strap :from the bracket. X
Remove the bag with the collapsible emer-
gency spare wheel.
X Open the bag and remove the collapsible
emergency spare wheel.
For further information on changing a wheel
and fitting the spare wheel, see
(Y page 263).
Stowing aused collapsible emergency
spare wheel Take the following steps to stow a used col-
lapsible emergency spare wheel. Otherwise,
the collapsible emergency spare wheel will
not fit in the boot in the intended manner.
Mercedes-Benz recommends that you have
this work carried out at a qualified specialist
workshop.
!
Only place the collapsible emergency
spare wheel in the vehicle when it is dry.
Otherwise, moisture may get into the vehi-
cle.
X Unscrew the valve cap from the valve.
X If possible, unscrew the valve insert from
the valve and release the air.
i Fully deflating the tyre 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 for the
emergency spare wheel over the collapsi-
ble emergency spare wheel.
X Stow the collapsible emergency spare
wheel in the emergency spare wheel well
under the boot.
X Use the retaining screw to pierce through
the protective film and fasten the collapsi-
ble emergency spare wheel in place.
X AMG vehicles: pull the bag over the col-
lapsible emergency spare wheel and close
it. 262
Where will I find...?Breakdown assistance

X
Place the bag with the collapsible emer-
gency spare wheel in the boot.
X Hook in the retaining strap carabiners and
lash the collapsible emergenc yspare wheel
to the bracket. Flat tyre
Preparing the vehicle
Your vehicle may be equipped with:
R a TIREFIT kit
R an emergency spare wheel
R MOExtended tyres (tyres with run-flat char-
acteristics) (Y page 272)
i Vehicle preparation is not necessary on
vehicles with MOExtended tyres.
i Vehicles with MOExtended tyres are not
equipped with a TIREFIT kit at the factory.
It is therefore recommended that you addi-
tionally equip your vehicle with a TIREFIT kit
if you fit tyres that do not feature run-flat
characteristics, e.g. winter tyres. A TIREFIT
kit can be obtained from a Mercedes-Benz
Service Centre.
X Stop the vehicle as far away as possible
from traffic on solid, non-slippery and level
ground.
X Switch on the hazard warning lamps.
X Apply the electric parkin gbrake manually
(Y page 147).
X Bring the front wheels into the straight-
ahead position.
X Vehicles with manual transmission:
engage first or reverse gear.
X Vehicles with automatic transmission:
move the selector leve rtoP.
X Switch off the engine. X
Vehicles without KEYLESS-GO: remove
the key from the ignition lock.
X Vehicles 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.
X Vehicles with KEYLESS-GO: remove the
Start/Stop button from the ignition lock
(Y page 127).
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 Get out of the vehicle. Pay attention to traf-
fic conditions when doing so.
X Close the driver's door.
X Place the warning triangle (Y page 260) a
suitable distance away.O bserve legal
requirements. TIREFIT kit
Using the TIREFIT kit TIREFIT is a tyre sealant.
You can use TIREFIT to seal punctures of up
to 4 mm, particularly those in the tyre tread.
You can use TIREFIT at outside temperatures
down to
Ò20 †. G
WARNING
In the following situations, the tyre sealant is
unable to provide sufficient breakdown assis-
tance, as it is unable to seal the tyre properly:
R there are cuts or punctures in the tyre
larger than those mentioned above.
R the wheel rim is damaged.
R you have driven at very low tyre pressures
or on a flat tyre. Flat tyre
263Breakdown assistance
Z

There is a risk of accident.
Do not drive any further. Contact a qualified
specialist workshop.
X Do not remove any foreign objects which
have penetrated the tyre, e.g. screws or
nails.
X Remove the tyre sealant bottle, the accom-
panying "max. 80 km/h" sticker and the
tyre inflation compressor from the stowage
well underneath the boot floor
(Y page 261). X
Affix part :of the sticker within the driv-
er's field of vision.
X Affix part ;of the sticker near the valve
on the wheel with the defective tyre. G
WARNING
The tyre sealant is harmful and causes irrita-
tion. It must not come into contact with your
skin, eyes or clothing or be swallowed. Do not
inhale TIREFIT fumes. Keep tyre sealant away
from children. There is a risk of injury.
If you come into contact with the tyre sealant,
observe the following:
R Rinse off the tyre sealant from your skin
immediately with water.
R If the tyre sealant comes into contact with
your eyes, immediately rinse them thor-
oughly with clean water.
R If tyre sealant is swallowed, immediately
rinse your mouth out thoroughly and drink
plenty of water. Do not induce vomiting,
and seek medical attention immediately. R
Immediately change out of clothing which
has come into contact with tyre sealant.
R If an allergic reaction occurs, seek medical
attention immediately.
i If tyre sealant leaks out, allow it to dry. It
can then be removed like a layer of film.
If you get tyre sealant on your clothing,
have it cleaned as soon as possible with
perchloroethylene. X
Remove filler hose Band plug =from the
bottom section of the tyre inflation com-
pressor housing.
X Slide the yellow filler hose connector into
the mounting on yellow cap Aof tyre seal-
ant bottle :until the plug engages.
X With the sealing rings in front, slide yellow
cap Aof tyre sealant bottle :into the
mounting of tyre inflation compressor ;
until the cap and both hooks engage. 264
Flat tyreBreakdown assistance

X
Remove the cap from valve Con the faulty
tyre.
X Screw filler hose Donto valve C.
X Inser tplug =into the socket of the ciga-
rette lighter (Y page 240) or into a 12 V
power socket in your vehicle (Y page 241).
X Turn the key to position 1(Ypage 127) in
the ignition lock.
X Press on/off switch ?on the tyre inflation
compressor to ON.
The tyre inflation compressor is switched
on. The tyre is inflated.
i First, tyre sealant is pumped into the tyre.
The pressure can briefly rise to approx-
imately 500 kPa (5 bar, 73 psi).
Do not switch off the tyre inflation com-
pressor during this phase.
X Let the tyre inflation compressor run for a
maximum of ten minutes. The tyre should
the nhave attained a pressure of at least
200 kPa (2.0 bar, 29 psi).
! Do not operate the tyre inflation com-
pressor for longer than ten minutes at a
time without a break .Itmay otherwise
overheat.
The tyre inflation compressor can be oper-
ated again once it has cooled down.
If a pressure of 200 kP a(2 .0 ba r,29 psi) has
bee nachieved afte rten minutes, see
(Y page 265).
If a pressure of 200 kPa (2.0 ba r,29 psi) has
not bee nachieved afte rten minutes, see
(Y page 265).
Tyre pressure of 200 kPa (2.0 bar/
29 psi) not reached If a pressure of 200 kPa
(2.0 ba r,29 psi) has
not been achieved after ten minutes:
X Switch off the tyre inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tyre. X
Very slowly drive forwards or reverse
approximately 10 m.
X Pump up the tyre again.
After a maximum of ten minutes, the tyre
pressure must be at least 200 kPa (2.0 bar,
29 psi). G
WARNING
If the required tyre pressure is not reached
after the specified time, the tyre is too badly
damaged. The tyre sealant cannot repair the
tyre in this instance. Damaged tyres and a tyre
pressure that is too low can significantly
impair the vehicle's braking and driving char-
acteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
Tyre pressure of 200 kPa (2.0 bar/
29 psi) reached X
Switch off the tyre inflation compressor.
X Unscrew the filler hose from the valve of
the faulty tyre.
! After use, excess tyre sealant may run out
of the filler hose .This could cause stains.
Therefore, place the filler hose in the plastic
bag that contained the TIREFIT kit.
X Stow the tyre sealant bottle, the tyre infla-
tion compressor and the warning triangle.
X Pull away immediately. G
WARNING
At yre temporarily sealed with tyre sealant
impairs the driving characteristics and is not
suitable for higher speeds .There is a risk of
accident.
You should therefore adapt your driving style
accordingly and drive carefully. Do not exceed
the specified maximum speed with a tyre that
has been repaired using tyre sealant.
The maximum speed for a tyre sealed with
tyre sealant is 80 km/h. The "max. 80 km/h"
sticker must be affixed to the instrumentc lus-
ter within the driver's field of vision. Flat tyre
265Breakdown assistance Z

X
Stop after driving for approximately ten
minutes and check the tyre pressure with
the tyre inflation compressor.
The tyre pressure mus tnow be at least
130 kPa (1.3 bar, 19 psi). G
WARNING
If the required tyre pressure is not reached
after driving for a short period, the tyre is too
badly damaged. The tyre sealant cannot
repair the tyre in this instance. Damaged tyres
and a tyre pressure that is too low can signif-
icantly impair the vehicle's braking and driv-
ing characteristics. There is a risk of accident.
Do not continue driving. Contact a qualified
specialist workshop.
i In your vehicle, you will find a sticker with
the Mercedes-Benz Service24h telephone
number, e.g. on the B-pillar on the driver's
side.
X Correct the tyre pressure if it is still at least
130 kPa (1.3 bar, 19 psi) (for the values,
see the fuel filler flap).
X To increase the tyre pressure: switch on
the tyre inflation compressor. X
To reduce the tyre pressure: press pres-
sure release button :next to pressure
gauge ;. X
To remove the tyre sealant bottle from the
tyre inflation compressor ,press together
the locking tabs on the yellow cap.
X Pull the tyre sealant bottle out of the tyre
inflation compressor.
The filler hose stays on the tyre sealant
bottle.
X Stow the tyre sealant bottle, the tyre infla-
tion compresso rand the warning triangle.
X Drive to the neares tspecialist qualified
workshop and have the tyre changed there.
X Have the tyre sealant bottle and the filler
hose replaced as soon as possible at a
qualified specialist workshop. H
Environmental note
Have the used tyre sealant bottle disposed of
professionally, e.g. at aqualified specialist
workshop.
X Have the tyre sealan tbottle replaced every
four years at a qualified specialist work-
shop. Changing
awheel and fitting the spare
wheel
Preparing the vehicle When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 80 km/h.
G
WARNING
The wheel/tyre dimensions and the tyre type
of the spare wheel/emergency spare wheel 266
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and the wheel to be replaced may differ. Fit-
ting a spare wheel/emergency spare wheel
may severely impair the driving characteris-
tics. There is a risk of accident.
To prevent hazardous situations:
R Adap tyour driving style accordingly and
drive carefully.
R Never fit more than one spare wheel/emer-
gency spare wheel if the dimesions are dif-
ferent to those of the wheel being replaced.
R Only use a spare wheel/emergency spare
wheel briefly if the dimesions are different
to those of the wheel being replaced.
R Do not switch off ESP ®
.
R Have the spare wheel/emergency spare
wheel in question replaced at the nearest
qualified specialist workshop. Make sure
that the wheel/tyre dimensions and tyre
type are correct.
i Vehicles without an emergency spare
wheel/spare wheel are not equipped with
wheel-changing tools at the factory. For
more information on which tools are
required to perform a wheel change on your
vehicle, e.g. wheel chock, wheel wrench or
centring pin, consult a Mercedes-Benz
Service Centre.
X Prepare the vehicle as described
(Y page 263).
X Remove the following items (depending on
the vehicle's equipment) from the stowage
well under the boot floor:
R the emergency spare wheel
R the wheel wrench
R the folding wheel chock
R the jack
R the centring pin
R the tyre inflation compressor
X Secure the vehicle to prevent it from rolling
away. Securing the vehicle to prevent it from
rolling away If your vehicle is equipped with a wheel chock,
it can be found in the vehicle tool kit
(Y
page 261).
The folding wheel chock is an additional
securing measure to prevent the vehicle from
rolling away, for example when changing a
wheel. X
Fold both plates upwards :.
X Fold out lower plate ;.
X Guide the lugs on the lower plate fully into
the openings in base plate =. Securing the vehicle on level ground
X
On level ground: place chocks or other
suitable items under the front and rear of
the wheel that is diagonally opposite the
wheel you wish to change. Flat tyre
267Breakdown assistance Z

Securing the vehicle on slight downhill gradients
X
On downhill gradients: place chocks or
othe rsuitable items in fron tofthe wheels
of the front and rear axle.
Raising the vehicle G
WARNING
If you do not position the jack correctly at the
appropriate jacking point of the vehicle, the
jack could tip over with the vehicle raised.
There is a risk of injury.
Only position the jack at the appropriate jack-
ing point of the vehicle. The base of the jack
must be positioned vertically, directly under
the jacking point of the vehicle.
The following must be observed when raising
the vehicle:
R to raise the vehicle, only use the vehicle-
specific jack that has been tested and
approved by Mercedes-Benz. If used incor-
rectly, the jack could tip over with the vehi-
cle raised.
R the jack is designed only to raise and hold
the vehicle for a short time while a wheel
is being changed. It is not suited for per-
forming maintenance work under the vehi-
cle.
R avoid changing the wheel on uphill and
downhill slopes.
R before raising the vehicle, secure it from
rolling away by applying the parking brake
and inserting wheel chocks. Never disen-
gage the parking brake while the vehicle is
raised. R
the jack must be placed on a firm, flat and
non-slip surface. On a loose surface, a
large, load-bearing underlay must be used.
On a slippery surface, a non-slip underlay
must be used, e.g. rubber mats.
R do not use wooden blocks or similar
objects as a jack underlay. Otherwise, the
jack will not be able to achieve its load-
bearing capacity due to the restricted
height.
R make sure that the distance between the
underside of the tyres and the ground does
not exceed 3 cm.
R never place your hands and feet under the
raised vehicle.
R never lie under the raised vehicle.
R never start the engine when the vehicle is
raised.
R never open or close a door or the boot lid
when the vehicle is raised.
R make sure that no persons are present in
the vehicle when the vehicle is raised. X
Using wheel wrench :, loosen the bolts on
the wheel you wish to change by about one
full turn. Do not unscrew the bolts com-
pletely.
The jacking points are located just behind the
front wheel arches and just in front of the rear
wheel arches (arrows). 268
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Vehicles with AMG equipment:
the vehicle
has covers fitted to protect the vehicle body
next to the jacking points on the outer sills. Covers, front (example
:vehicles with AMG equip-
ment)
X AMG vehicles and vehicles with AMG
equipment: fold cover;upwards. X
Position jack ?at jacking point =. X
Make sure that the base of the jack is posi-
tioned directly under the jacking point.
X Turn crank Aclockwise until jack ?sits
completely on jacking point =and the
base of the jack lies evenly on the ground.
X Turn ratchet Auntil the tyre is raised a
maximum of 3 centimetres off the ground.
Removing awheel X
Unscrew the uppermost wheel bol tcom-
pletely.
X Screw centring pin :into the thread
instead of the wheel bolt.
X Unscrew the remaining wheel bolts fully.
! Do not place wheel bolts in sand or dirt.
The threads of the wheel bolts and wheel
hubs could otherwise be damaged when
the bolts are tightened.
X Remove the wheel. Flat tyre
269Breakdown assistance Z