2008 MERCEDES-BENZ CLS COUPE winter tyres

14 W
Warning and indicator lamp ABS (yellow)
. . . . . . . . . . . . . . . . . . 244
Warning signal
Audible . . . . . . . . . . . . . . . . . . . . . . 251
Warning triangle . . . . . . . . . . . . . . . . 216
Washer fluid Display message . . . . . . . . . . . . . . 240
Wearing seat belts . . . . . . . . . . . . . . . . 88
Wheel bolts
Tightening torque . . . . . . . . . . . . . . 286
Wheels
General notes . . . . . . . . . . . . . . . . . 198
Technical data . . . . . . . . . . . . . . . . 305
Windowbags . . . . . . . . . . . . . . . . . . . . . 48
Windows Cleaning . . . . . . . . . . . . . . . . . . . . . 212
Cleaning the windscreen . . . . . . . . 211
Side windows . . . . . . . . . . . . . . . . . . 98
Windscreen
Cleaning . . . . . . . . . . . . . . . . . . . . . 211
Windscreen washer fluid . . . . . . . . . 317
Topping up . . . . . . . . . . . . . . . . . . . 197
Windscreen washer fluid reservoir
. . . . . . . . . . . . . . . . . . . . . . . . . . 197, 317
Windscreen washer reservoir
Capacity . . . . . . . . . . . . . . . . . . . . . 317
Windscreen washer system . . . . . . . 317Windscreen wipers
. . . . . . . . . . . . . . . 97
Cleaning . . . . . . . . . . . . . . . . . . . . . 211
Malfunction . . . . . . . . . . . . . . . . . . 259
Replacing the wiper blades . . . . . . 275
Winter diesel . . . . . . . . . . . . . . . . . . . 193
Winter driving . . . . . . . . . . . . . . 204, 205
Winter tyres . . . . . . . . . . . . . . . . . . . . 204
Limiting the speed (on-board com-
puter) . . . . . . . . . . . . . . . . . . . . . . . 144 Index
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Driving systems
142 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 select shift range
1, 2 or 3 in good time. 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 from overheating
and wearing too quickly. If you need addi-
tional 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. This
could cause the drive wheels to lose their
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
R Permanent for long-term speed restric-
tions, e.g. for driving on winter tyres
(Y page 144) 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 good
time.
i The speed indicated in the speedometer
may differ slightly from the limit speed
stored.
Variable Speedtronic With the cruise control lever you can operate
cruise control, Distronic* and variable
Speedtronic.
The LIM indicator lamp on the cruise control
lever indicates which system you have selec-
ted:
R
LIM indicator lamp off: Cruise control or Distronic* is selected
R LIM indicator lamp lit:
variable Speedtronic is selected
You can use the cruise control lever to limit
the speed to any speed above 30 km/h while
the engine is running. 1
To store the current speed or a higher
speed
2 LIM indicator lamp
3 To call up the current or last stored speed
or to make fine adjustments in 1 km/h
increments
4 To store the current speed or a lower
speed
5 To switch between cruise control, Dis-
tronic* and variable Speedtronic
6 To deactivate variable Speedtronic Controls
* optional
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Driving systems
144
Variable Speedtronic is deactivated automat-
ically when you depress the accelerator pedal
beyond the pressure point (kickdown). but
only if your current speed does not differ by
more than 20 km/h from the stored speed.
You will hear a warning tone if this is the case.
G
Risk of accident
It is not possible to deactivate variable
Speedtronic by braking.
i The last speed stored is cleared when you
switch off the engine.
Permanent Speedtronic i
Permanent Speedtronic is only available
for certain countries.
You can use the on-board computer to limit
the speed permanently to a value between
160 km/h (e.g. for driving with winter tyres)
and the maximum speed.
Shortly before the stored speed is reached, it
is shown in the multi-function display.
You cannot exceed the stored limit speed,
even if you depress the accelerator pedal
beyond the pressure point (kickdown). Setting permanent Speedtronic
X
Press è or · to select the Set-
tings... menu (Y page 121).
X Press the j button to call up the selec-
tion of submenus.
X Press æ or ç to select the Vehicle
submenu.
X Press j to select Speed limit (win-
ter tyres). X
Press the æ orç button to select the
desired setting.
The following settings can be selected:
R Off
Permanent Speedtronic is deactivated.
R A limit speed between 240 km/h and
160 km/h in increments of 10 km/h.
X To select a different display, press j,
è or ÿ. HOLD
HOLD relieves the strain on the driver:
R when pulling away, especially on steep
slopes
R when manoeuvring on steep slopes
R when waiting in traffic
The vehicle is kept stationary without the
driver having to depress the brake pedal.
The braking effect is cancelled and HOLD
deactivated when you depress the accelera-
tor pedal to pull away.
Activation conditions You can activate HOLD if:
R
the vehicle is stationary
R the engine is running
R the driver's door is closed
R the parking brake is not applied
R the bonnet is closed
R the selector lever is in position D, R or N Controls
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189
Running-in notes
............................... 190
Refuelling ........................................... 190
Engine compartment ........................ 193
Tyres and wheels .............................. 198
Winter driving ................................... 204
Driving tips ........................................ 206
Driving abroad ................................... 208
Service ............................................... 209
Care .................................................... 210
Operation
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Tyres and wheels
200It is therefore recommended to additionally
equip your vehicle with the TIREFIT kit*
when fitting tyres that do not feature run-
flat properties, e.g. winter tyres.
i A TIREFIT kit*
is available from any quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre.
You will find notes on driving with a flat tyre
in the "Practical advice" section
(Y page 287). Tyre tread
G
Risk of accident
Bear in mind that:
R tyre grip decreases rapidly on wet roads
when

the tread depth is less than 3 mm.
You should thus replace tyres that have
insufficient tread.
R winter tyres should be replaced when the
tread depth is 4 mm or less because oth-
erwise they no longer provide adequate
grip.
R the tread on a tyre may not wear evenly.
You should thus regularly check the tread
depth and the condition of the tread across the entire width of all tyres. If nec-
essary, turn the steering wheel so that
you can see the tyre tread more easily.
You could otherwise lose control of the
vehicle and cause an accident due to the
reduced grip of the tyres on the road. Tyre pressures
G
Risk of accident
Tyre pressure that is either too high or too
low has a negative effect on the vehicle’s
active

safety, which could lead you to cause
an accident. You should therefore regularly
check the pressure of all your tyres (includ-
ing the spare tyre*), particularly prior to
long trips, and correct the pressure as nec-
essary.
To test tyre pressure, use a suitable pressure
gauge. The outer appearance of a tyre does
not permit any reliable conclusion about the
tyre pressure. On vehicles fitted with the elec-
tronic tyre pressure monitor*, the tyre pres-
sure can be checked in the on-board com-
puter.
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 190).
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. Operation
* optional
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Winter driving
204
X
Press the reset button on the left of the
instrument cluster
(Y page 209).
The following message appears in the
multi-function display: Check current
tyre pressure?
X Press the æ button.
The following message appears in the
multi-function display:
Tyre pressure monitor restarted
The tyre pressure monitor has stored the
pressure of the tyres as a new reference
value.
If you wish to cancel the restart:
X Press the ç button. Winter driving
Have your vehicle winterproofed at a qualified
specialist workshop, e.g. at a Mercedes-Benz
Service Centre, at the onset of winter.
! Do not use a sharp object to remove snow
or ice from the trim on the B-pillar between
the side windows. 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 ESP ®
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 tread
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
the vehicle, affix an appropriate warning sign
in the driver's field of vision. This can be
obtained at a qualified specialist workshop,
e.g. from a Mercedes-Benz Service Centre.
In such circumstances, you should also
restrict the maximum speed of the vehicle
using permanent Speedtronic 26
to the maxi-
mum permissible speed for winter tyres
(Y page 144).
Once you have fitted the winter tyres:
X Restart the tyre pressure moni-
tor* (Y page 202). G
Risk of accident
If you fit the spare wheel* when driving with
winter tyres, bear in mind that driving sta-
bility will be impaired owing to unstable
cornering

characteristics caused by the dif-
ferent tyres. You should therefore adapt
your driving style and drive carefully.
Have the spare wheel* replaced at the
nearest qualified specialist workshop
which has the necessary specialist knowl-
edge and tools to carry out the work
26 Only available for certain countries. Operation
* optional
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Winter driving
205required. Mercedes-Benz recommends
that you use a Mercedes-Benz Service
Centre
for this purpose. In particular, work
relevant to safety or on safety-related sys-
tems must be carried out at a qualified
specialist workshop. Snow chains
For safety reasons, Mercedes-Benz recom-
mends that you only use snow chains which
have

been specially approved for your vehicle
by Mercedes-Benz or are of a corresponding
standard of quality.
! Information about the use of snow chain-
compatible AMG winter tyres is applicable
for AMG tyres. Use of snow chains is only
permissible with these tyres.
If you intend to fit snow chains, please bear
the following points in mind: R
Snow
chains cannot be fitted to all wheel/
tyre combinations.
R Snow chains must not be fitted to emer-
gency spare wheels, e.g. the "Minispare" or
collapsible emergency spare wheel.
R Fit snow chains to both rear wheels. Com-
ply with the manufacturer's installation
instructions.
! If snow chains are fitted to the front
wheels, they may come into contact with
the bodywork and axle components when
the vehicle is in motion and damage the
tyre or the vehicle.
On vehicles with AIRMATIC DC*, you must
only drive at raised vehicle level if snow
chains have been fitted (Y page 146).
Do not exceed the maximum permissible
speed of 50 km/h.
i You may wish to deactivate ESP ®
when
pulling away with snow chains fitted
(Y page 59). This way you can allow the
wheels to spin in a controlled manner, ach-
ieving an increased driving force (cutting
action). Winter driving
G
Risk of accident
Do not shift down for additional engine
braking on a slippery road surface. This
could cause the drive wheels to lose their
grip and the vehicle could skid.
You

should drive particularly carefully on slip-
pery road surfaces. Avoid sudden accelera-
tion, steering and braking manoeuvres.
If the vehicle threatens to skid or cannot be
stopped when moving at low speed:
X Shift the selector lever to N.
X Try to bring the vehicle under control using
corrective steering. Operation
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Flat tyre
287MOExtended run-flat system*
The MOExtended run-flat system must only
be
used in conjunction with the tyre pressure
loss warning system or the tyre pressure
monitor*.
! The maximum permissible distance which
can be driven in run-flat mode depends on
the load in the vehicle. It is 50 km if the
vehicle is partially laden and 30 km if fully
laden.
The maximum range that can be driven in
emergency operation is measured from the
point at which the pressure loss warning
message appears in the multi-function dis-
play.
You must not exceed a maximum speed of
80 km/h.
i Vehicles featuring the MOExtended run-
flat system are not equipped with the
TIREFIT kit*.
It is therefore recommended to additionally
equip your vehicle with the TIREFIT kit*
when fitting tyres that do not feature run-
flat properties, e.g. winter tyres. i
A TIREFIT kit* is available from any quali-
fied specialist workshop, e.g. a Mercedes-
Benz Service Centre. G
Risk of accident
The handling characteristics of your vehicle
deteriorate in run-flat mode, for example:
R when cornering
R when braking
R when accelerating rapidly
Adapt your driving style accordingly and
avoid

sudden changes in direction and sud-
den acceleration, as well as driving over
obstacles (i.e. kerbs, potholes), and driving
off-road. This is particularly the case when
the vehicle is heavily laden.
The maximum permissible distance that
can be driven in run-flat mode depends to
a large extent on the loads placed on the
vehicle. It can be shorter due to high
speeds, a heavy load, sudden acceleration
and/or manoeuvring, the road surface con-
dition, outside temperature, etc., or further
if you drive carefully and conservatively.
Do not continue to drive in run-flat mode if:
R you hear banging noises
R the vehicle starts to shake R
you see smoke and smell rubber
R ESP ®
is intervening constantly
R there

are tears in the sidewalls of the tyre
After driving in run-flat mode, you must
have the rims checked for damage at a
qualified specialist workshop which has the
necessary specialist knowledge and tools
to carry out the work required. The faulty
tyre must be replaced in every case.
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.
i On a vehicle with MOExtended tyres, only
MOExtended spare tyres should be used.
These must be of the size specified for the
vehicle. Practical advice
* optional
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