2012 MERCEDES-BENZ SLK ROADSTER Owners Manual

the
Tyre pressures will be dis‐ played after a few minutes of driv‐
ing message.
X Press the :button.
The Use current pressures as new reference values message appears in
the multifunctio ndisplay.
If you wish to confirm the restart:
X Press the abutton.
The Tyre press. monitor restarted message appears in the multifunction dis-
play.
After you have drive
nfor a few minutes, the
system checks whether the current tyre
pressures are within the specified range.
The new tyre pressures are then accepted
as reference values and monitored.
If you wish to cancel the restart:
X Press the %button.
The tyre pressure values stored at the last
restart will continue to be monitored.
Radio type approval for the tyre pres-
sure monitor In certain countries, a radio type approval for
the tyre pressure monitor may be required.
The radio type approval number for the tyre
pressure monitor can be found online at:
http://www.mercedes-benz.de/
betriebsanleitung. Changing
awheel Flat tyre
The "Breakdown assistance" section
(Y page 263) contains information and notes
on how to deal with a fla ttyre. It also provides
instructions on changing a wheel or fitting the
spare wheel/emergency spare wheel. Interchanging the wheels
G
WARNING
Interchanging the front and rear wheels may
severely impair the drivin gcharacteristics if
the wheels or tyres have different dimensions.
The wheel brakes or suspension components
may also be damaged. There is a risk of acci-
dent.
Interchange front and rear wheels only if the
wheels and tyres are of the same dimensions.
Interchanging the front and rear wheels of
differing dimensions can render the general
operating permit invalid.
Always pay attention to the instructions and
safety notices in the section on "Wheel
changing and spare wheel fitting"
(Y page 266).
The wear patterns on the front and rear tyres
differ, depending on the operating conditions.
Interchange the wheels before a clear wear
pattern has formed on the tyres. Front tyres
typically wear more on the shoulders and the
rear tyres in the centre.
On vehicles that have the same size front and
rear wheels, you can interchange the wheels
every 5,000km to 10,000 km depending on
the degree of tyre wear. Maintain the direc-
tion of tyre rotation.
Cleant he contact surfaces of the wheel and
the brake disc thoroughly every time a wheel
is interchanged. Check the tyre pressure and,
if necessary, restart the tyre pressure loss
warning system or the tyre pressure monitor.
! On vehicles fitted with a tyre pressure
monitor, electronic components are loca-
ted in the wheel.
Tyre-fitting tools should not be applied in
the area of the valve, as this could damage
the electronic components.
Only have tyres changed at a qualified spe-
cialist workshop. 294
Changing
awheelWheels and tyres

Direction of rotation
Tyres with a specified direction of rotation
have additional benefits, e.g. if there is a risk
of aquaplaning .You will only gain these ben-
efits if the correct direction of rotation is
observed.
An arrow on the sidewall of the tyre indicates
its correct direction of rotation.
You may fit a spare wheel/emergency spare
wheel against the direction of rotation.
Observe the time restriction on use as well as
the speed limitation specified on the emer-
gency spare wheel/spare wheel. Storing wheels
Store wheels that are not being used in a cool,
dry and preferably dark place. Protec tthe
tyres against oil, grease, petrol and diesel. Cleaning the wheels
G
WARNING
Do not use high-pressure cleaners with circu-
lar-jet nozzles (dirt grinders) to clean your
vehicle, in particular the tyres. You could oth-
erwise damage the tyres and cause an acci-
dent. Wheel and tyre combinations
Points to remember
! For safety reasons, Mercedes-Ben zrec-
ommends that you only use tyres and
wheels which have been approved by
Mercedes-Benzs pecifically for your vehi-
cle. These are specially adapted to the control
systems, such as ABS or ESP
®
and are
marked as follows:
R MO =Mercedes-BenzO riginal
R MOE =Mercedes-BenzO riginal Extended
(tyres featuring run-flat characteristics)
R MO1 =Mercedes-BenzO riginal (only cer-
tain AMG tyres)
Mercedes-Benz Original Extended tyres
may only be used on wheels that have been
specifically approved by Mercedes-Benz.
Only use tyres, wheels or accessories tes-
ted and approved by Mercedes-Benz. Cer-
tain characteristics, e.g. handling, vehicle
noise emissions or fuel consumption, may
otherwise be adversely affected. In addi-
tion, when driving with aload, tyre dimen-
sion variations could cause the tyres to
come into contact with the bodywork and
axle components.T his could result in dam-
age to the tyres or the vehicle.
Mercedes-Ben zaccepts no liability for
damage resulting from the use of tyres,
wheels or accessories othe rthan those tes-
ted and approved.
Further information about wheels, tyres
and approved combinations can be
obtained from any qualified specialist
workshop.
! Large wheels: the lower the section width
for a certain wheel size, the lower the ride
comfort is on poor road surfaces. Roll com-
fort and suspension comfort are reduced
and the risk of damage to the wheels and
tyres as a result of driving over obstacles
increases.
i You will find a table of tyre pressures on
the inside of your vehicle's fuel filler flap.
For further information on tyre pressure,
see (Y page 289). Check tyre pressures
regularly, and only when the tyres are cold. Wheel and tyre combinations
295Wheels and tyres Z

i
Notes on the vehicle equipment –always
fit the vehicle:
R with tyres of the same size on a given axle
(left/right)
R with the same type of tyres at a given
time (summer tyres, winter tyres,
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 fro maqualified spe-
cialist workshop.
i Overview of abbreviations used in the fol-
lowing tyre tables:
R BA: both axles
R FA: front axle
R RA: rear axle
In the following table, the wheel/tyre combi-
nations are allocated to the vehicle models
through variants, e.g. V1, V2 etc.: V1
SLK 200
16
, SLK 250 16 V2
SLK 250 CDI
16 V3
SLK 350
16 V4 SLK 55 AMG
i
Not all wheel/tyre combinations can be
mounted at the factory in all countries.
16 BlueEFFICIENCY 296
Wheel and tyre combinationsWheels and tyres

Tyres
Summer tyres Light-alloy wheels V1 V2 V3 V4
BA
205/5
5 R16 91 V 17 7.0
Jx16 H2 ET 37.5 #
— — —
BA
205/55 R16 91 V
17 7.0 J x 16 H2 ET 38 #
— — —
FA
RA
205/55 R16 91 W
17
225/50 R16 92 W 17, 18 7.0
Jx16 H2 ET 37.5
8.0 Jx16 H2 ET 33.5 # #
— —
FA
RA
205/55 R16 91 W
17
225/50 R16 92 W 17 7.0 J x 16 H2 ET 38
7.5
Jx16 H2 ET 45.5 — #
— —
FA
RA 225/45 R17 91 W
245/40
R17 91 W 18, 19 7.5 J x 17 H2 ET 42
8.5 J x 17 H2 ET 36 # # #
—
FA
RA
225/45 R17 91 W MOExtended
20
245/40 R17 91 W
MOExtended 18, 19, 20 7.5 J x 17 H2 ET 42
8.5 J x 17 H2 ET 36 # # #
—
FA
RA
225/40 R18 92 Y XL
21
245/35 R18 92 Y XL 18, 19, 21 7.5 J x 18 H2 ET 42
8.5 J x 18 H2 ET 36 # # #
—
FA
RA 235/40 ZR18 95
YXL
255/35 ZR18 94 Y XL 19, 21 8.0 J x 18 H2 ET 43
9.0 J x 18 H2 ET 42 — — — #
Winter tyres Light-allo
ywheels V1 V2 V3 V4
BA
205/55 R1 6 91 H M+S
i17 7.0
Jx16 H2 ET 37.5 # #
— —
BA
205/55 R1 6 91 H M+S
i17 7.0 J x 16 H2 ET 38 # #
— —
BA
225/45 R17 91 H M+S
i18 7.5 J x 17 H2 ET 42 # # #
—
BA 235/40 R18 95 V XL M+S
i 8.0 J x 18 H2 ET 43 — — — #
FA
RA 235/40 R18 95 V XL M+S
i
255/35 R18 94 V XL
M+Si 19, 21 8.0 J x 18 H2 ET 43
9.0 J x 18 H2 ET 42 — — — #
17
Not in conjunction with Sports package code 950/952.
18 SLK 200 BlueEFFICIENCY (V1), SLK 250 BlueEFFICIENCY (V1). SLK 250 CDI BlueEFFICIENCY (V2): additional
measures necessary (additional wheel-arch extensio nonrear axle wheel cutout).
19 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section.
20 MOExtended tyres (tyres featuring run-flat characteristics) only in combination with an activated tyre pres-
sure loss warning system.
21 Observe notes on "large wheels" in the "Wheel/tyre combinations" section. Wheel and tyre combinations
297Wheels and tyres Z

Collapsible emergency spare wheel
19Tyres Steel wheel V1 V2 V3 V4
145/70-17 92P
Tyre pressure: 350 kPa (3.5 bar/51 psi) 4.5 B x 17 H2 ET 12 # # #
—
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 th eemergency spare wheel.
19 Use of snow chains is not permitted. Observe the notes in the "Snow chains" section. 298
Wheel and tyre combinationsWheels and tyres

Useful information
............................300
Notes on the technical data .............300
Genuine Mercedes-Benz parts .........300
Vehicle electronics ...........................301
Identification plates .........................302
Service products and capacities .....303
Vehicle data ...................................... 310
Boot lid opening dimensions ...........311
24 GHz radar sensor system (coun-
tryo verview) ..................................... 312 299Technical data

Useful information
i This Owner's Manual describes all models
and all standard and optional equipment
available to your vehicle at the time of pub-
lication of the Owner's Manual. Country-
specific deviations are possible. Please
note that your vehicle may not be equipped
with all features described. This also
applies to safety-relevan tsystems and
functions.
i Please read the information on qualified
specialist workshops (Y page 22).Notes on the technical data
You can find technical data on the Internet at:
http://www.mercedes-benz.com
i The technical data was determined in
accordance with EC Directives. All data
applies to the vehicle's standard equip-
ment. It may therefore differ for vehicles
with optional equipment. You can obtain
further information from a Mercedes-Benz
Service Centre. Genuine Mercedes-Benz parts
Mercedes-Ben ztests genuine parts and con-
version parts and accessories which have
been specifically approved for your vehicle for
their reliability, safety and suitability. Despite
ongoing market research, Mercedes-Benzis
unable to evaluate other parts. Mercedes-
Ben ztherefore accepts no responsibility for
the use of such parts in Mercedes-Ben zvehi-
cles, even if they have been independently or
officially approved.
In Germany and some other countries, certain
parts are only officially approved for installa-
tion or modification if they comply with legal
requirements. All genuine Mercedes-Benz
parts meet this requirement .The use of non- approved parts may invalidate the vehicle's
general operating permit. This is the case if:
R
they cause a change of the vehicle type
from that for which the vehicle's general
operating permit was granted.
R other road users could be endangered.
R the emission or noise levels are adversely
affected. G
WARNING
Driving safety may be impaired if non-
approved parts, tyres and wheels or safety-
relevant accessories are used.
This could lead to malfunctions in safety-rel-
evant systems, e.g. the brake system. This
could cause you to lose control of your vehicle
and cause an accident.
For this reason, Mercedes-Ben zrecommends
that you use genuine Mercedes-Benz parts or
parts of equal quality. Only use tyres, wheels
and accessories that have been specifically
approved for your vehicle.
! Airbags and seat belt tensioners, as well
as control units and sensors for these
restraint systems may be installed in the
following areas of your vehicle:
R doors
R door pillars
R door sills
R seats
R dashboard
R instrument cluster
R centre console
Do not install accessories such as audio
systems in these areas. Do not carry out
repairs or welding. You could impair the
operating efficiency of the restraint sys-
tems.
Have aftermarket accessories installed at
a qualified specialist workshop. Mercedes-
Benz recommends that you use a
Mercedes-Benz Service Centre for this pur-
pose. 300
Genuine Mercedes-Benz partsTechnical data

H
Environmental note
Daimler AG also supplies reconditioned
assemblies and parts which are of the same
quality as new parts. For these, the same war-
ranty applies as for new parts.
Always specify the vehicle identification num-
ber (VIN) (Y page 302) and the engine num-
ber (Y page 303) when ordering genuine
Mercedes-Ben zparts. Vehicle electronics
Tampering with the engine electron-
ics
G
WARNING
Always have work on the engine electronics
and related components carried out at a quali-
fied specialist workshop. Otherwise, the vehi-
cle's operating safety could be affected.
! Only have work carried out on the engine
electronics and its associated parts, such
as control units, sensors and connector
leads, at a qualified specialist workshop.
Vehicle components may otherwise wear
more quickly and the vehicle's operating
permit may be invalidated. Retrofitting of two-way radios and
mobile phones (RF transmitters)
Use the Technical Specification
ISO/TS 21609 22
implementation regulation
when retrofitting RF (radio frequency) trans-
mitters.
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. !
Have aftermarket radio frequency trans-
mitting equipmen tinstalled at a qualified
specialist workshop.
The transmission outpu tatthe aerial base
must not exceed the maximum values below. Waveband Maximum
transmission
output (PEAK) Short wave (f < 54 MHz) 30 W
4 m waveband 15 W
2 m waveband 25 W
Trunked radio/Tetra 15 W
70 cm waveband 15 W
GSM/DCS/PCS
850/900/1800/1900 10 W
UMTS/LTE 10 W
The following aerial positions may be used if
RF transmitters have been properly installed:
:
Rear wing 23 G
WARNING
Incorrect retrofitting of RF transmitters can
cause the vehicle electronicst o malfunction.
The vehicle's operating safety and thus your
own safety are impaired.
22 ISO/TS 21609 –Technical Specification for Road Vehicles (EMC) guidelines for installation of aftermarket
radio frequency transmitting equipment.
23 Recommended installation position: on the side which faces the centre of the road. Vehicle electronics
301Technical data
Z