2009 MERCEDES-BENZ SLR start stop button

49 Getting started
Driving
Starting difficulties
If the engine does not start as described,
carry out the following steps:
Turn the SmartKey in the starter switch
to position0 and repeat starting
procedure (
page 48).

Remember that extended starting
attempts can drain the battery.
If the engine does not start after several
starting attempts, there could be a
malfunction in the engine electronics or in
the fuel supply system.

Notify an authorized Mercedes-Benz
Center or call Roadside Assistance.
Parking brake
1Release button
2Parking brake lever

Pull lever2 upwards slightly, press
release button1 and move the lever
down to the stop.
The warning lamp; (USA only)
or3 (Canada only) in the
instrument cluster goes out.
Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. Children
could release the parking brake, which
could result in an accident and/or personal
serious injury.

124 Controls in detailControl systemRACETIMER
The RACETIMER allows you to time and
save driving stretches in hours, minutes
and seconds.
Press button è or ÿ repeatedly
until you see the 722S menu.

Press button j repeatedly until you
see the RACETIMER.1Lap
2RACETIMER
3Gear indicatorStarting the RACETIMER

Press button æ.
The timer starts.
Displaying intermediate time

Press button ç while the timer is
running.
The intermediate time is shown for
5 seconds.
Stopping the RACETIMER

Press button æ.
The timer stops.
Warning!
G
The RACETIMER feature is only for use on
roads and in conditions where high speed
driving is permitted. Racing on public roads
is prohibited under all circumstances and
the driver is and must always remain
responsible for following posted speed
limits.
i
You can start the RACETIMER when the
engine is running or the starter switch is in
position2 (
page 40).
i
While the RACETIMER is being displayed,
you cannot adjust the volume using
buttonsæ or ç.
i
When you stop the vehicle and turn the
SmartKey to position 1 (
page 40), the RACE-
TIMER stops timing. Timing is resumed when you
switch the ignition back on (page 40) or
restart the engine (
page 47) and then press
the æbutton.

125 Controls in detail
Control system
Saving lap time and starting a new lap
Press button ç while the timer is
running.
The intermediate time will be shown for
5 seconds.

Press button ç within the next
5 seconds.
The intermediate time shown will be
saved as a lap time.
The RACETIMER begins timing the new
lap. The new lap begins to be timed as
soon as the intermediate time is called
up.1Best lap time
2Lap number
3RACETIMER
4Gear indicator
Resetting current lap

Press button æ while the timer is
running.
The timer stops.

Press button ç.
The lap time is reset to “0”.Deleting all laps

Press button æ while the timer is
running.
The timer stops.

Press the reset button in the instru-
ment cluster twice (
page 114).

Press button æ.
The timer starts. The saved laps are
deleted.
i
You can save up to nine laps.
i
It is not possible to delete a single saved lap.
i
When you switch off the engine, the
RACETIMER will be reset to“0” after 30 seconds.
All laps are deleted.

156 Controls in detailAudio systemTrack search backward
Presse button.SEEK RWD
will appear in the display.
Track search will run the tape back-
ward to the start of the track currently
playing and switch to Play.
Stopping track search

Pressd, c, f or
ebutton.
The cassette will switch over to Play.Scanning


Starting scan
Press2 button.SC will appear in the display.
Each track on the cassette will be
played briefly in ascending order.


Stopping scan
Press2, d, c, f or
ebutton.
The system will switch to Play.Fast forward/reverse


Starting cassette fast forward mode
Pressd button.FORWARD
will appear in the display.


Starting cassette fast reverse mode
Pressc button.REWIND
will appear in the display.
The cassette will automatically switch over
to the play mode at the end or beginning of
the tape.


Stopping the cassette fast
forward/reverse mode
Pressd, c, f or
ebutton.
The cassette will switch over to the
play mode.

194 Controls in detailAutomatic climate controlAir conditioning
The air conditioning (cooling) function is
operational when the engine is running and
cools the vehicle interior down to the se-
lected temperature. In addition, the cool-
ing function dehumidifies the air in the
vehicle interior, thus preventing the
windows from fogging up.Deactivating
It is possible to deactivate the cooling
function of the automatic climate control
system. The air in the vehicle will then no
longer be cooled or dehumidified.

Press ± button (
page 186).
The indicator lamp on the ±
button comes on. The cooling function
switches off after a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air
conditioning.

Press ± button again (
page 186).
The indicator lamp on the ± button
goes out.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Warning!
G
If you turn off the cooling function, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and/or
others.i
Condensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.
i
Under certain circumstances, e.g. when the
fuel system is too hot and needs to be cooled,
the cooling switches on again automatically. The
red lamp on the ± button the automatic
climate control panel flashes.
After cooling the fuel system sufficiently, the air
conditioning switches off again and the red lamp
stops flashing.
!
If you press the ± button on the auto-
matic climate control panel and it starts to flash,
this indicates that the air conditioning is losing
refrigerant. The compressor has turned off. The
air conditioning cannot be turned on again.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Center.

196 Controls in detailOpen airOpening and closing the door windows
The door windows are opened and closed
electrically. The switches for the door win-
dows are located on the door sill on the
driver’s side (
page 34). The switch for
the passenger side is located on the door
sill on the passenger side.
1Left window
2Right window

Switch on the ignition (
page 40).
Warning!
G
When closing the door windows, make sure
there is no danger of anyone being harmed
by the closing procedure.
The closing of the door windows can be im-
mediately halted by releasing the switch or,
if switch was pulled past the resistance
point and released, by either pressing or
pulling the respective switch.
If the window encounters an obstruction
t h a t b l o c k s i t s p a t h i n a c i r c u m s t a n c e w h e r e
you pulled the switch past the resistance
point and released it to close the window,
the automatic reversal function will stop the
window and open it slightly.
If the window encounters an obstruction
t h a t b l o c k s i t s p a t h i n a c i r c u m s t a n c e w h e r e
you are closing the window by pulling and
holding the switch, or by pressing and hold-
ing button‹ on the SmartKey, or by
pressing and holding the ,button on the
climate control panel, the automatic
reversal function will not operate.
When leaving the vehicle, always remove the
SmartKey from starter switch, take it with
you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.i
After switching off the ignition (
page 40)
or removing the SmartKey from the starter
switch, the door windows can be operated


until you open a door


for at least 5 minutes if no door was opened

199 Controls in detail
Open air
Your vehicle is equipped with a semi-auto-
matic soft top. This means that you will
have to release or lock the soft top manu-
ally by means of a handle. The soft top can
be opened or closed electrically using the
buttons on the soft top switch.
1Handle
Handle1 serves to release or lock the
soft top.
Warning!
G
When opening or closing the soft top, make
sure that nobody is trapped or injured by the
moving parts such as the soft top linkage.
If potential danger exists, release the soft
top switch. The soft top folding mechanism
stops immediately.Warning!
G
When leaving the vehicle, always remove the
SmartKey from the starter switch, take it
with you, and lock the vehicle. Do not leave
children unattended in the vehicle, or with
access to an unlocked vehicle. A child’s
unsupervised access to a vehicle could
result in an accident and/or serious
personal injury.
!
The opened soft top is stored behind the
roll-over bars. Never sit on the stored soft top
and never store objects on it. You will otherwise
damage the soft top.
Never use the space that emerges between the
roll-over bars and the rear window when the soft
top is closed as a storing space.
!
When you open or close the soft top, make
sure


there is sufficient clearance, as the soft top
swings upwards


that the soft top fabric is not frozen


that the soft top is not dirty or wet


that no items are placed on the soft top
Otherwise the soft top or other vehicle compo-
nents could be damaged.
!
Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the soft top when leaving the vehicle. If
water enters the vehicle interior, vehicle elec-
tronics could be damaged which is not covered
by the Mercedes-Benz Limited Warranty.