change wheel MERCEDES-BENZ SLK ROADSTER 2008 User Guide

Driving sys
tems 11
2
Making fine adjustments in 1 km/h
increments X
Briefly press the cruise control lever up
1 for a higher speed or down 4for a
lower speed.
The last speed stored is increased or
reduced.
Deactivating cruise control There are several ways to deactivate cruise
control:
X
Briefly press the cruise control lever for-
wards 6.
or
X Brake .
or
X Briefly press the cruise control lever in the
direction of arrow 5.
Variable Speedtronic is selected. LIM indi-
cator lamp 2in the cruise control lever
lights up.
Cruise control is automatically deactivated if,
for example:
R you apply the handbrake
R you are driving at less than 30 km/h R
ESP ®
is intervening or you deactivat e
ESP ®
R you depress the clutch pedal for more than
seven seconds on vehicles with a manual
transmissio n
R you move the selector lever to Nin vehicles
with automatic transmission* while drivin g
i The last speed stored is cleared when you
switch off the engine. Speedtronic
Speedtronic brakes automatically so that you
do not exceed the set speed. On long and
steep downhill gradients, especially if the
vehicle is laden, you must shift to a lower gear
in good time or select shift range 1,2 or 3in
vehicles with automatic transmission*. In this
way you will make use of the braking effect of
the engine, which relieves the load on the
brake system and prevents the brakes fro m
overheating and wearing too quickly. If you
need additional braking, depress the brake
pedal repeatedly rather than continuously. G
Risk of accident
Never depress the brake pedal continu -
ously while the vehicle is in motion, e.g.
never cause the brakes to rub by applying
constant slight pedal pressure. This causes
the brake system to overheat, increases
the braking distance and can lead to the
brakes failing completely. G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. Thi s
could cause the drive wheels to lose thei r
grip and the vehicle could skid.
You can set a variable or permanent limit
speed:
R Variable for speed limits, e.g. in built-up
areas (Y page 113 )
R Permanent for long-term speed restric-
tions, e.g. for driving on winter tyres
( Y page 114 ) G
Risk of accident
Speedtronic is only an aid designed to
assist driving. You are responsible for the
vehicle's speed and for braking in goo d
time. Controls
* optional
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B
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Air conditionin
g 127H
Environmental not
e
The cooling system uses the refrigerant
R134A. This refrigerant does not damage
the earth's ozone layer.
i Condensation may drip from the under-
side of the vehicle when Thermatic is in
cooling mode.
The "cooling with air dehumidification" func-
tion is only available with 2-zone Thermatic*
or Thermotronic* .
X To activate: press the914
/œ 15
but-
ton.
The indicator lamp in the 9/œ but-
ton lights up.
X To deactivate: press the914
/œ 15
button.
The indicator lamp in the 9/œ but-
ton goes out. The cooling with air dehumid-
ification has a delayed switch-off feature. Controlling the air conditioning auto-
matically
Only Thermotronic *features the "control air
conditioning automatically" function .
In automatic mode, the set temperature is
maintained at a constant level fully automat-
ically. To do so, the system automatically
regulates the temperature of the dispensed
air, the airflow and the air distribution.
The automatic air conditioning will achieve
optimal operation if "cooling with air dehu-
midification" is also activated. If necessary ,
cooling with air dehumidification can be deac-
tivated.
X Make sure that the key is in position 2in
the ignition lock .
X Set the desired temperature .
X To activate :press the Ubutton.
The indicator lamp in the Ubutton
comes on.
X To deactivate: press theUbutton.
The indicator lamp in the Ubutton goes
out. The airflow is set to level 2. The air dis-
tribution is set to position b. Setting the temperature
Different temperatures can be set for the
driver's and front-passenger sides.
Heatmatic/2-zone Thermatic* X
To increase/reduce: turn thumb-
wheels 1and 4clockwise or anti-clock-
wise (Y page 120), (Y page 122). Only
adjust the temperature in small incre-
ments. Start at 22 †.
Thermotronic * X
To increase/reduce: press the$or
% button. Only change the temperature
setting in small increments. Start at 22 †.
The temperature is shown in the display.
14 Vehicles with 2-zone Thermatic*.
15 Vehicles with Thermotronic*. Controls
* optional
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Loading and stowing
136
Removing X
Pull draught stop 1off the roll-over bars. 6
Handl e
X Detach press-studs 2. To do this, pull han-
dle 6.
X Unhook retainer loop 3. Loading and stowin
g Cup holder
G
Risk of injury
Keep the cup holder closed while the vehi-
cle is in motion. Otherwise, vehicle occu -
pants could be injured by objects being
thrown around if you:
R brake sharply
R change direction suddenly
R are involved in an acciden t
Only use the cup holders for containers of
a suitable size and which have lids. Other-
wise, the drinks could spill.
Cup holders should not be used for hot
drinks. Otherwise, you may scald yourself. 1
Cup holder
X To open: press lightly on the cover of cup
holder 1.
The cup holder slides out automatically. Roof rack system*
G
Risk of accident
You can only mount a roof rack on vehicles
that have covers on the front roof pillars
and reinforced rear wheel arches.
Only use the roof rack when basic carrie r
bars are fitted. The left and right rails are
only stabilised by the basic carrier bars
being fitted. Controls
* optional
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Tyres and wheels
15
8
If the vehicle is to be heavily laden or driven
at high speeds, the tyre pressure must be
adapted according to the specifications given
in the fuel filler flap
(Y page 148).
Use the highest specified tyre pressure for
the spare wheel* . G
Risk of accident
Should the tyre pressure drop repeatedly:
R Check the tyre for foreign bodies.
R Check whether the wheel is losing air or
the valve is leaking .
Tyre pressure that is too low has a negative
effect on the vehicle’s active safety, which
could lead to your causing an accident .
Tyre pressure changes by approximately
0.1 bar for every 10 °C change in ambient
temperature.
If you measure the tyre pressure in enclosed
spaces where the temperature differs from
the outside temperature, you will have to cor-
rect the measured value accordingly.
When the vehicle is driven, the tyre tempera-
ture, and with it the tyre pressure, will
increase depending on the road speed and
the load on the tyres.
Therefore, you should only correct tyre pres-
sures when the tyres are cold. The pressure of warm tyres should only be
corrected if it is too low for the current oper-
ating conditions.
You will find a table of tyre pressures for var-
ious operating conditions on the inside of
your vehicle's fuel filler flap.
Driving with tyre pressure that is too high or
too low can:
R shorten the service life of the tyres
R cause increased tyre damag e
R have a negative effect on handling charac-
teristics (e.g. by causing aquaplaning)
i The tyre pressure values given for low
loads are minimum values which offer you
good ride comfort characteristics.
You can, however, also use the values given
for higher loads. These are permissible and
will not adversely affect the running of the
vehicle.
Also check the tyre pressure of the spare
wheel*. H
Environmental not
e
Check the tyre pressure regularly, and at
least every 14 days. Tyre pressure loss warning system*
G
Risk of accident
The tyre pressure loss warning system doe s
not warn you of an incorrectly set tyre pres-
sure. The table on the inside of the fuel fille r
flap will help you decide whether the tyre
pressures should be corrected.
The tyre pressure loss warning system does
not replace the need to regularly check
your vehicle's tyre pressures, since an even
loss of pressure on several tyres at the
same time cannot be detected by the tyre
pressure loss warning system.
The tyre pressure loss warning system is
not able to warn you of a sudden loss of
pressure, e.g. if the tyre is penetrated by a
foreign object.
In the event of a sudden loss of pressure,
bring the vehicle to a halt by braking care-
fully. Do not make any sudden steering
movements when doing so.
While the vehicle is in motion, the tyre pres-
sure loss warning system monitors the set
tyre pressure using the rotational speed of
the wheels. This enables the system to detect
significant pressure loss in a tyre. If the spee d
of rotation of a wheel changes as a result of
a loss of pressure, a corresponding warning Operation
* optional
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Tyres and wheels
15
9
message will appear in the multi-function dis-
play.
The function of the tyre pressure loss warning
system is limited or delayed if:
R snow chains are fitted to your vehicle's
tyres
R road conditions are wintry
R you are driving on sand or grave l
R you adopt a very sporty driving style (cor -
nering at high speeds or driving with high
rates of acceleration)
R you are driving with a heavy load (in th e
vehicle or on the roof)
Restarting the tyre pressure loss warn-
ing system Restart the tyre pressure loss warning system
if you have :
R changed the tyre pressure
R changed the wheels or tyre s
R fitted new wheels or tyres
X Before restarting, consult the table of tyre
pressures on the inside of the fuel filler fla p
to ensure that the tyre pressure in all fou rtyres is set correctly for the operating con-
ditions concerned
.
X Also observe the notes in the section on
tyre pressures (Y page 157). G
Risk of accident
The tyre pressure loss warning system can
only give reliable warnings if you have set
the correct tyre pressure.
If an incorrect tyre pressure is set, thes e
incorrect values will be monitored.
A tyre with insufficient pressure results in
an instability of the vehicle when driving,
thus increasing the risk of an accident .
X Make sure that the key is in position 2in
the ignition lock .
The standard display appears in the multi-
function display (Y page 95).
X Press korj to select the tyre pres-
sure function:
Run Flat Indicator active
Menu: R-Button æ
X Press the reset button on the left of the
instrument cluster.
The following message appears in the
multi-function display:
Restart Run Flat Indicator ?Yes Cancel
If you wish to confirm the restart:
X Press the æbutton.
The following message appears in the
multi-function display:
Run Flat Indicator restarted
After a teach-in period, the tyre pressure
loss warning system will monitor the set
tyre pressures of all four tyres.
If you wish to cancel the restart:
X Press the çbutton.
or
X Wait until the message
Restart Run Flat Indicator?
Yes Cancel disappears.
The tyre pressure values stored at the last
restart will continue to be monitored. Operation
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Winter driving
160 Interchanging the wheels
G
Risk of accident
Interchange the front and rear wheels only
if they have the same dimensions: for exam-
ple size, offset, etc.
After every wheel interchange/change,
have the tightening torque checked at a
qualified specialist workshop that 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.
The wheels could work loose if they are not
tightened to a torque of 110 Nm.
For safety reasons, Mercedes-Benz recom -
mends that you only use wheel bolts of the
correct size which have been approved for
Mercedes-Benz vehicles.
The wheels may be interchanged every 5,000
km to 10,000 km depending on the degree of
tyre wear, provided that the vehicle has the
same size front and rear tyres. Do not reverse
the direction of tyre rotation.
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. The fron
t
tyres typically wear more on the shoulders
and the rear tyres in the centre.
Clean the contact surfaces of the wheel and
the brake disc thoroughly every time a whee l
is changed. Check the tyre pressure and, if
necessary, restart the tyre pressure loss
warning system*. Winter driving
Introduction to winter operation
Have your vehicle winterproofed at a qualified
specialist workshop, e.g. at a Mercedes-Ben z
Service Centre, at the onset of winter. Winter tyres
Use winter tyres at temperatures below +7 °
C and on snow or ice-covered roads. Only
then can the effect of the ABS and ES P®
driv-
ing systems be ensured in winter too.
Use winter tyres of the same make and tread
on all wheels to maintain safe handling char-
acteristics. G
Risk of accident
You must replace winter tyres with a trea d
depth of less than 4 mm immediately. They
are no longer suitable for winter use, in par-
ticular because they do not provide suffi-
cient grip. This could cause you to lose
control of your vehicle and cause an acci-
dent .
Always observe the maximum permitted
speed specified for the winter tyres you have
fitted. If you fit winter tyres which have a
lower maximum permitted speed than that of Operation
* optional
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Driving
tips 16
2
X
Vehicles with manual transmission: engage
neutral.
X Vehicles with automatic transmission*:
shift the selector lever to N.
X Try to bring the vehicle under control using
corrective steering. Driving tips
Rolling with the engine switched off
G
Risk of accident
Never switch the engine off while the vehi-
cle is in motion.
There is no power assistance for the steer-
ing and the service brake when the engine
is not running.
You will require considerably more effort to
steer and brake and you could therefore
lose control of the vehicle and cause an
accident. Brakin
g G
Risk of accident
Do not change down for additional engine
braking on a slippery road surface. Thi s
could cause the drive wheels to lose thei r
grip and the vehicle could skid. G
Risk of accident
Make sure that other road users are not
endangered by your braking. Downhill gradients On long and steep downhill gradients, espe-
cially if the vehicle is laden, you must shift to
a lower gear in good time or, on vehicles with
automatic transmission*, select shift rang e
1 ,2 or 3.
i This also applies if you have activated
cruise control or Speedtronic.
This uses the braking effect of the engine and
you will not have to brake to such an exten t
to maintain the same speed. This relieves the
load on the brake system and prevents the
brakes from overheating and wearing too
quickly. If you need additional braking ,
depress the brake pedal repeatedly rather
than continuously.
Heavy and light loads If the brakes have been subjected to a heavy
load, do not stop the vehicle immediately, but
drive on for a short while. This allows the air-
flow to cool the brakes more quickly. G
Risk of accident
Never depress the brake pedal continu -
ously while the vehicle is in motion, e.g.
never cause the brakes to rub by applying Operation
* optional
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Where will I find...?
173
6
Valve extractor
7 Electric air pump
Vehicles with a collapsible spare
wheel* 1
Collapsible spare wheel
2 Vehicle tool kit (under collapsible spare
wheel)
3 Retaining screw
X Turn retaining screw 3anti-clockwise.
X Remove collapsible spare wheel 1. Vehicle tool kit
1
Folding wheel chock
2 Jack
3 Sheet for faulty wheel
4 Centring pin
5 Towing eye
6 Wheel wrenc h
7 Valve extractor
8 Electric air pump
Setting up the folding wheel choc k
The folding wheel chock serves as an addi-
tional measure for securing the vehicle against rolling away, e.g. when a wheel is
being changed.
1
To fold the plates upwards
2 To fold out the lower plate
3 To insert the plate
X Fold both plates 1upwards.
X Fold out lower plate 2.
X Guide the lugs on the lower plate fully int o
openings in base plate 3. Practical advice
* optional
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Display
messages 17
8 Display messages Possible cause/consequence Possible solution
Tyre pressure Check tyres
The tyre pressure loss warning system*
has detected a significant pressure loss. X
Stop the vehicle without making any sudden
steering or braking manoeuvres. Pay attention
to the traffic conditions as you do so.
X Check the tyres.
X Check the tyre pressure and correct it if nec-
essary (Y page 157).
X Repair or change the faulty wheel as necessar y
( Y page 218).
X Then restart the tyre pressure loss warning
system* once the tyre pressure is correc t
( Y page 158). Check tyres, then restart Run
Flat Indicator There was a tyre pressure warning mes-
sage. X
Make sure that the pressure is correct for all
tyres (Y page 157).
X Restart the tyre pressure loss warning sys-
tem* (Y page 158). Run Flat Indi-
cator inoperative
The tyre pressure loss warning system
*is
deactivated due to a malfunction . X
Visit a qualified specialist workshop. SRS Restraint system
malfunction Con-
sult workshop The restraint systems are faulty. X
Visit a qualified specialist workshop immedi-
ately. Practical advice
* optional
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Flat tyre
219
For all vehicles 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 Switch off the engine.
X Remove the key from the ignition lock.
X Place the warning triangle (Y page 172) or
warning lamps at a suitable distance.
Observe legal requirements. G
Risk of injury
The jack is designed only to raise the vehi-
cle 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. Oth-
erwise, the jack will not be able to achieve
its load-bearing capacity due to the restric-
ted height. Do not start the engine at any time while
the wheel is being changed.
Do not lie under the vehicle when it is being
supported by the jack. If you do not rais
e
the vehicle as described, it could slip off the
jack (e.g. if the engine is started or a door
or the boot lid are opened or closed) and
you could be seriously injured . 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 temperature s
down to -20 °C. G
Risk of accident
In the following situations, your safety is at
particular risk and TIREFIT is unable to pro -
vide breakdown assistance:
R if there are cuts or punctures in the tyre
greater than 4 mm
R if the wheel rim is damaged
R if you have driven at very low tyre pres-
sures or on a flat tyre
Do not drive any further. Consult a qualified
specialist workshop which has the neces- sary specialist knowledge and tools to carr
y
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 work-
shop.
X Do not remove any foreign objects which
have penetrated the tyre, e.g. screws or
nails .
X Remove TIREFIT, the accompanying "max .
80 km/h" sticker and the electric air pum p
from the stowage well underneath the boot
floor (Y page 172). 1
Driver's field of vision sticker
2 Wheel sticker Practical advice
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