clutch MERCEDES-BENZ SLK55AMG 2007 R171 Owner's Manual

51 Getting started
Driving
Starting the engine Manual transmission
Gearshift pattern for manual transmission
For more information, see “Manual trans-
mission” (
page 153).Starting
Depress brake pedal.
Make sure the gearshift lever is in neu-
tral position (no gear selected).
Fully depress clutch pedal.
Otherwise the engine cannot be start-
ed due to the integrated safety inter-
lock.
Do not depress accelerator.
Turn the SmartKey in the starter switch
to position3 (
page 37) and hold until
the engine starts.
For information on turning off the engine,
see “Turning off engine” (
page 61).
Warning!G
Inhalation of exhaust gas is hazardous to
your health. All exhaust gas contains carbon
monoxide (CO), and inhaling it can cause un-
consciousness and possible death.
Do not run the engine in confined areas
(such as a garage) which are not properly
ventilated. If you think that exhaust gas
fumes are entering the vehicle while driving,
have the cause determined and corrected
immediately. If you must drive under these
conditions, drive only with at least one win-
dow fully open.

54 Getting started
Driving
Manual transmission
Depress the brake pedal.
Fully depress the clutch pedal.
Move gearshift lever to first gear to
drive forward, or to reverse gear to
drive rearward.
Simultaneously release the brake pedal
and slowly the clutch pedal.
Carefully depress the accelerator
pedal.Automatic transmission*
Depress the brake pedal.
Move the gear selector lever to
positionDorR.
Release the brake pedal.
Carefully depress the accelerator
pedal.
After a cold start, the transmission engag-
es at a higher revolution. This allows the
catalytic converter to reach its operating
temperature earlier.
iOnce the vehicle is in motion, the automatic
central locking system engages and the locking
knobs drop down.
The automatic door lock feature can be deacti-
vated (
page 146).
You can open a locked door from the inside.
Open door only when conditions are safe to do
so.
Warning!G
It is dangerous to shift the gear selector
lever out ofPorN if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or in reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
!In order to avoid damage to the transmis-
sion:

Wait for the gear selection process to com-
plete before setting the vehicle in motion.

Place the gear selector lever in
positionDorR only when the vehicle is
stopped.

57 Getting started
Driving
Switching on windshield wipers
Turn the combination switch to the
desired position depending on the
intensity of the rain.
0Windshield wipers off
IIntermittent wiping
IINormal wiper speed
IIIFast wiper speed
Intermittent wipingVehicles with rain sensor*:
Intermittent wiping interval is dependent
on wetness of windshield.
Turn the combination switch to
positionI.
Vehicles with rain sensor*:
After the initial wipe, pauses between
wipes are automatically controlled by the
rain sensor.!Vehicles with rain sensor*:
Do not leave windshield wipers on an intermit-
tent setting when the vehicle is taken to an auto-
matic car wash or during windshield cleaning.
Windshield wipers will operate in the presence of
water sprayed on the windshield, and windshield
wipers may be damaged as a result.
!Vehicles with rain sensor*:
If you have set intermittent wiping, dirt on the
surface of the rain sensor or optical effects
may cause the windshield wipers to wipe in an
undesired fashion. This could then damage
the windshield wiper blades or scratch the
windshield. You should therefore switch off
the windshield wipers when weather conditions
are dry.iIntermittent wiping is interrupted when the
vehicle is at a standstill and a door is opened.
This protects persons getting into or out of the
vehicle from being sprayed.
Intermittent wiping will be continued when all
doors are closed and

the clutch pedal is depressed (vehicles with
manual transmission)
or

the gear selector lever is in positionDorR
(vehicles with automatic transmission*)
or

the wiper setting is changed using the
combination switch

154 Controls in detail
Manual transmission
Gearshift pattern for manual transmission
Shifting into reverse
Stop the vehicle completely.
Fully depress the clutch pedal.
Move the gearshift lever to the neutral
position (no gear selected).
Move the gearshift lever to the left until
you feel a certain resistance.
Push the gearshift lever past this
resistance.
Then move the gearshift lever forward
into positionR.
!When you are shifting into the5th or6th
gear, make sure that you press the gearshift
lever to the right. Otherwise, you could acciden-
tally shift into the3rd or4th gear and damage
the transmission.
Downshifting gears leading to overrevving the
engine can result in engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Never hold the vehicle stopped on a hill by using
the clutch pedal. The clutch may be damaged
which is not covered by the Mercedes-Benz
Limited Warranty.
Do not exceed the engine speed limits. Refer to
tachometer (
page 119) for engine speeds.
!Only shift into reverse gearR when the
vehicle is stationary, as the transmission could
otherwise be damaged.

249 Controls in detail
Driving systems
Canceling cruise control
There are several ways to cancel the cruise
control:
Step on the brake pedal.
The cruise control is canceled. The last
speed set is stored for later use.
or
Briefly push the cruise control lever in
direction of arrow3 (
page 248).
The cruise control is canceled. The last
speed set is stored for later use.
iOn uphill or downhill grades, the cruise
control may not be able to maintain the set
speed. Once the grade eases, the set speed will
be resumed.
On downhill grades, the cruise control maintains
the set speed with braking from the vehicle’s
braking system.
In addition, on longer downhill grades the
automatic transmission* will automatically
downshift.
iVehicles with manual transmission:
If you depress the clutch pedal when shifting into
another gear, the engine speed may increase.

Drive with sufficient engine speed.

Shift gears in a timely manner.

If possible, do not shift down more than one
gear.
iThe last stored speed is canceled when you
turn off the engine.
iThe cruise control switches off automatical-
ly, if

you step on the brake pedal.

you pull up the parking brake lever firmly.

the vehicle speed is below 20 mph
(30 km/h).

ESP® is in operation or switched off with the
ESP® switch (page 86).

Vehicles with manual transmission:
you depress the clutch pedal for longer than
6 seconds during shifting into another gear.

Vehicles with automatic transmission*:
you move the gear selector lever to
positionN while driving.
!Vehicles with automatic transmission*:
Moving gear selector lever to positionN while
driving also cancels cruise control. However, the
gear selector lever should not be moved to
positionN while driving except to coast when
the vehicle is in danger of skidding (e.g. on icy
roads).
iDepressing the accelerator pedal does not
deactivate the cruise control. After brief
acceleration (e.g. for passing), the cruise
control will resume the last speed set.

286 Operation
Driving instructions
Winter driving instructions
The most important rule for slippery or icy
roads is to drive sensibly and to avoid
abrupt acceleration, braking and steering
maneuvers. Do not use the cruise control
system under such conditions.
When the vehicle is in danger of skidding,
move gear selector lever* to positionN or
declutch in case of manual transmission.
Try to keep the vehicle under control by
corrective steering action.Road salts and chemicals can adversely af-
fect braking efficiency. Increased pedal
force may become necessary to produce
the normal brake effect.
Depressing the brake pedal periodically
when traveling at length on salt-strewn
roads can bring road-salt-impaired braking
efficiency back to normal.
If the vehicle is parked after being driven
on salt-treated roads, the braking efficien-
cy should be tested as soon as possible af-
ter driving is resumed.
For more information, see “Winter driving”
(
page 332).
iFor information on driving with snow chains,
see “Snow chains” (
page 333).
Warning!G
On slippery road surfaces, never downshift
in order to obtain braking action. This could
result in drive wheel slip and reduced vehi-
cle control. Your vehicle’s ABS will not pre-
vent this type of control loss.
Warning!G
Make sure not to endanger any other road
users when carrying out these braking ma-
neuvers.
Warning!G
If the vehicle becomes stuck in snow, make
sure snow is kept clear of the exhaust pipe
and from around the vehicle with the engine
running. Otherwise, deadly carbon monox-
ide (CO) gases may enter the vehicle interi-
or, resulting in unconsciousness and death.
To assure sufficient fresh air ventilation,
open a window slightly on the side of the ve-
hicle not facing the wind.
Warning!G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose. In-
dicated temperatures just above the freez-
ing point do not guarantee that the road
surface is free of ice.