2014 MERCEDES-BENZ SLK ROADSTER Owners Manual

Emergency spare wheel
Important safety notes
G
WARNING
The wheel/tyre dimensions and the tyre type of the spare wheel/emergency spare wheel
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 Adapt your driving style accordingly and
drive carefully.
R Never fit more than one spare wheel/emer-
gency spare wheel if the dimensions are
different to those of the wheel being
replaced.
R Only use a spare wheel/emergency spare
wheel briefly if the dimensions 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.
When using an emergency spare wheel or
spare wheel of a different size, you must not
exceed the maximum speed of 80 km/h.
Snow chains must not be fitted to emergency
spare wheels. General notes
You should regularly check the pressure of all your tyres, including the emergency spare
wheel, particularly prior to long trips, and cor-
rect the pressure as necessary (Y page 318).
The applicable value is found on the wheel or
under "Technical data" (Y page 337).
An emergency spare wheel may also be fitted
against the direction of rotation. Observe the time restriction on use as well as the speed limitation specified on the emergency spare
wheel.
Replace the tyres after six years at the latest,
regardless of wear. This also applies to the
emergency spare wheel.
i If you are driving with the collapsible
emergency spare wheel fitted, the tyre
pressure loss warning system or the tyre
pressure monitor cannot function reliably.
Do not restart the tyre pressure loss warn-
ing system/tyre pressure monitor until the
defective wheel has been replaced with a
new wheel.
Vehicles with a tyre pressure monitor:
for a few minutes after an emergency spare wheel is fitted, the system may still display
the tyre pressure of the removed wheel.
The value displayed for the mounted emer-
gency spare wheel is not the same as the
current tyre pressure of the emergency
spare wheel. Removing the emergency spare wheel
(Example)
The collapsible emergency spare wheel can
be found in the stowage well under the boot
floor. X Lift and remove the reversible floor panel in
the boot (Y page 266).
X Turn retaining screw ;anti-clockwise and
remove it.
X Remove collapsible emergency spare
wheel :. 334
Emergency spare wheelWheels and tyres

AMG vehicles
AMG vehicles: the collapsible emergency
spare wheel is packed in a bag and attached
to a bracket in the boot.
X Loosen tensioning straps :on both sides.
X Unhook retaining spring hooks ;and =
of tensioning straps :from the bracket.
X Remove the emergency spare wheel bag
with the collapsible emergency spare
wheel.
X Open the emergency spare wheel bag and
remove the collapsible emergency spare
wheel.
Observe the instructions and safety notes in
the "Fitting a wheel" section (Y page 324).Stowing the emergency spare wheel
! Only place the collapsible emergency
spare wheel in the vehicle when it is dry.
Otherwise, moisture may get into the vehi-
cle.
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.
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 may 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.
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 emergency spare wheel
to the bracket. Inflating the collapsible emergency
spare wheel
! Inflate the collapsible emergency spare
wheel using the tyre inflation compressor
before lowering the vehicle. The wheel rim
could otherwise be damaged.
! Do not operate the tyre inflation com-
pressor for longer than ten minutes at a
time without a break. It may otherwise
overheat.
The tyre inflation compressor can be oper-
ated again once it has cooled down. Emergency spare wheel
335Wheels and tyres Z

X
Mount the collapsible emergency spare
wheel as described (Y page 324).
The collapsible emergency spare wheel
must be mounted before it is inflated.
X Pull plug ?out of the housing.
X Take the air hose out of the housing.
X Insert the yellow hose connector of the air
hose into the guide in the housing and push it into the fixture until the hose connector
engages.
X Remove the cap from the valve on the col-
lapsible emergency spare wheel.
X Screw union nut :on the air hose onto the
valve.
X Make sure on/off switch Aof the tyre
inflation compressor is set to OFF.
X Insert plug ?into the socket of the ciga-
rette lighter or into a 12 V of power socket
in your vehicle.
Observe the notes on the cigarette lighter
(Y page 268). Observe the notes on sock-
ets (Y page 269).
X Turn the key to position 1in the ignition
lock (Y page 141).
X Press on/off switch Aon the tyre inflation
compressor to ON.
The tyre inflation compressor is switched
on. The tyre is inflated. The tyre pressure is shown on pressure gauge =.
X Pump the tyre to the specified tyre pres-
sure.
The specified tyre pressure is printed on
the yellow label of the emergency spare
wheel.
X When the specified tyre pressure has been
reached, press on/off switch AtoOFF, on
the tyre inflation compressor.
The tyre inflation compressor is switched
off.
X Turn the key to position 0in the ignition
lock.
X If the tyre pressure is higher than the speci-
fied pressure, press pressure release but- ton
;until the correct tyre pressure has
been reached.
X Unscrew union nut :on the air hose from
the valve.
X Screw the valve cap onto the collapsible
emergency spare wheel valve again. Removing an air hose
X
To remove the hose from the tyre inflation
compressor, push down the rocker switch
on the hose connector and pull out the
hose.
X Stow plug ?and the air hose in the lower
section of the compressor housing.
X Stow the tyre inflation compressor in the
vehicle. 336
Emergency spare wheelWheels and tyres

Technical data
All models (except AMG vehicles) Collapsible emergency spare wheel
6Tyres Light-alloy wheels
145/70-17 92P
Tyre pressure: 350 kPa (3.5 ba
r/51 psi) 4.5 B x 17 H2 ET 12
AMG vehicles
Collapsible emergency spare wheel
6Tyres Light-alloy wheels
175/55-18 95P
Tyre pressure: 350 kPa (3.5 bar/51 psi) 6.0 B x 18 H2 ET 25
Depending on the country, the engine and the wheels fitted, your vehicle may be equipped with
TIREFIT or a collapsible emergency spare wheel.
i The specified tyre pressure is printed in yellow on the emergency spare wheel.
6 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. Emergency spare wheel
337Wheels and tyres Z

338

Useful information
............................340
Information on technical data .........340
Vehicle electronics ...........................340
Identification plates .........................342
Service products and capacities .....342
Vehicle data ...................................... 349 339Technical data

Useful information
i This Owner's Manual describes all mod-
els, series and optional equipment for your
vehicle that were available at the time of
going to press. National variations are pos- sible. Note that your vehicle may not be
equipped with all of the functions descri-
bed. This is also the case for systems and
functions relevant to safety.
i Read the information on qualified special-
ist workshops: (Y page 24). Information on technical data
You can find current technical data on the
Internet on our Mercedes ‑Benz homepage.
i The technical data was determined in
accordance with EU Directives. All data
applies to the vehicle's standard equip-
ment. The data may therefore differ for
vehicles with optional equipment. You can
obtain further information from a
Mercedes-Benz Service Centre. Vehicle electronics
Tampering with the engine electron-
ics
! Only have work carried out on the engine
electronics and its associated parts, such
as control units, sensors, actuating com-
ponents and connector leads, at a qualified specialist workshop. Vehicle components
may otherwise wear more quickly and the
vehicle's operating permit may be invalida- ted. Retrofitting two-way radios and
mobile phones (RF transmitters)
G
WARNING
If RF transmitters are tampered with or not
properly retrofitted, the electromagnetic radi- ation they emit can interfere with the vehicle
electronics. This may jeopardise the opera-
tional safety of the vehicle. There is a risk of an
accident.
You should have all work on electrical and
electronic components carried out at a quali-
fied specialist workshop. G
WARNING
If you use the RF transmitter in the vehicle in
an improper way, its electromagnetic radia-
tion can disrupt vehicle electronics, e.g. if:
R the RF transmitter is not connected to an
exterior aerial
R the exterior aerial is fitted incorrectly or is
not a low-reflection aerial
This can jeopardise the operating safety of the vehicle. There is a risk of an accident.
Have the low-reflection exterior aerial fitted at
a qualified specialist workshop. When oper-
ating in the vehicle, always connect the RF
transmitter to the low-reflection exterior aer-
ial.
! The operating permit may be invalidated if
the instructions for installation and use of
RF transmitters are not observed.
In particular, the following conditions must be complied with:
R only approved wavebands may be used.
R observe the maximum permissible out-
put in these wavebands.
R only approved aerial positions may be
used.
Excessive levels of electromagnetic radiation
may cause damage to your health and to the
health of others. The use of an exterior aerial
takes into consideration the scientific discus- 340
Vehicle electronicsTechnical data

sion surrounding the possible health risk
posed by electromagnetic fields.
Observe the notes on operating mobile
phones (Y page 270).
The following aerial positions may be used for the correct installation of RF transmitters: Approved aerial positions
:
Rear wing
i On the rear wing, it is recommended that
you position the aerial on the side of the
vehicle closest to the centre of the road.
Use Technical Specification ISO/TS 21609
(Road Vehicles – "EMC guidelines for fitting
aftermarket radio frequency transmitting
equipment") when retrofitting RF (radio fre-
quency) transmitters. Comply with the legal
requirements for add-on parts.
If your vehicle has fittings for two-way radio
equipment, use the power supply or aerial
connections intended for use with the basic
wiring. Be sure to observe the manufacturer's additional instructions when installing.
Deviations with respect to wavebands, maxi-
mum transmission outputs or aerial positions must be approved by Mercedes-Benz. The maximum transmission output (PEAK) at
the base of the aerial must not exceed the
following values: Waveband Maximum
transmission output Short wave
3 - 54 MHz 30 W
4 m waveband
74 - 78 MHz 15 W
2 m waveband
144 - 174 MHz 25 W
Trunked radio/Tetra
380 - 460 MHz 10 W
70 cm waveband
400 - 460 MHz 15 W
GSM/DCS/PCS
850/900/1800/1900 10 W
UMTS/LTE 10 W
The following can be used in the vehicle with-
out restrictions:
R RF transmitters with a maximum transmis-
sion output of up to 100 mW
R Mobile phones (GSM/DCS/PCS/UMTS/
LTE)
There are no restrictions when positioning the aerial on the outside of the vehicle for the fol-
lowing wavebands:
R Trunked radio/Tetra
R 70 cm waveband
R GSM/DCS/PCS
R UMTS/LTE Vehicle electronics
341Technical data Z