2009 MERCEDES-BENZ SLR fuel

105 Controls in detail
Locking and unlocking
Locking and unlocking from the inside
You can lock or unlock the vehicle from in-
side using the central locking switches.
This can be useful, for example, if you want
to unlock the passenger door from the in-
side or want to lock the vehicle before
starting to drive.
The central locking switch does not lock or
unlock the fuel filler flap and the storage
compartments.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.The switches are located on the upper part
of the center console.
Central locking switches1Locking
2UnlockingLocking

Press central locking switch1.
If all the doors are closed, the vehicle
locks.
Unlocking

Press central locking switch2.
The vehicle unlocks.
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.
i
If the vehicle was previously centrally locked
using the SmartKey, it will not unlock using the
central locking switch.
If the vehicle was previously locked with the
central locking switch


while in the global remote control mode, the
complete vehicle is unlocked when a door is
opened from the inside


while in the selective remote control mode,
only the door opened from the inside is
unlocked

116 Controls in detailInstrument clusterTachometer
The red marking on the tachometer
(page 29) denotes excessive engine
speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
Outside temperature indicator
The outside temperature is displayed in
the left or right multifunction display
(page 117), depending on the setting for
the standard display (
page 132). The temperature sensor is located in the
front bumper area. Due to its location, the
sensor can be affected by road or engine
heat during idling or slow driving. There-
fore, the accuracy of the displayed temper-
ature can only be verified by comparison to
a thermometer placed next the sensor, not
by comparison to external displays, e.g.
bank signs, etc.
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your
garage), you will notice a delay before the
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature indications caused by heat
radiated from the engine during idling or
slow driving.
!
Avoid driving at excessive engine speeds, as
it may result in serious engine damage that is not
covered by the Mercedes-Benz Limited
Warranty.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.

121 Controls in detail
Control system
Menus, submenus and functions
Menu1
Menu2
Menu3
Menu4
Menu5
Menu6
Menu7
Standard display
722 S
1
1Only Mercedes-Benz SLR McLaren Roadster 722 S
AUDIO
Vehicle status
message memory
2
2The Vehicle status message memory menu is only displayed if there is a message stored.
Settings
Trip computer
Telephone
(page 122)
(page 123)
(page 127)
(page 128)
(page 129)
(page 139)
(page 141)
Commands/submenusDigital speedome-
ter/Outside tem-
perature
Engine oil tem-
perature
Selecting
radio station
Calling up vehicle
malfunction, warn-
ing and system sta-
tus messages
stored in memory
Resetting to fac-
tory settings
Fuel consumption
statistics since start
Loading
phone book
Calling up mainte-
nance service
display
Vehicle supply
voltage
Operating the
CD player
Instrument clus-
ter submenu
Fuel consumption
statistics since the
last reset
Searching for
name in
phone book
Checking tire
inflation pressure
RACETIMER
Time submenu
Resetting fuel con-
sumption statistics
Overall analysis
Lighting submenu
Distance to empty
Lap analysis
Vehicle submenu
i
The headings used in the menus table are
designed to facilitate navigation within the sys-
tem and are not necessarily identical to those shown in the control system displays.
The first function displayed in each menu will automatically show you which part of the system
you are in.

139 Controls in detail
Control system
Setting automatic locking
Use this function to activate or deactivate
the automatic central locking. With the
automatic central locking system
activated, the vehicle is centrally locked at
vehicle speeds of approximately
9mph(15km/h).
Move the selection marker with button
æ or ç to the
Vehicle
submenu.

Press button j or k repeatedly
until you see the following message in
the left multifunction display: Automatic Door Lock
.
The selection marker is on the current
setting.

Press button æ or ç to switch Automatic Door Lock
On or
Off
.
Trip computer menu
Use the trip computer menu to call up
statistical data on your vehicle.
The following information is available:Fuel consumption statistics since start

Press button ÿ or è repeatedly
until you see the first function of the
trip computer menu.

Press button j or k repeatedly
until you see the following message in
the left multifunction display:
From
Start
.
1Distance driven since start
2Average speed since start
3Time elapsed since start
4Average fuel consumption since start
Function
Page
Fuel consumption statistics since
start
139
Fuel consumption statistics since
last reset
140
Resetting fuel consumption
statistics
140
Distance to empty
140
i
The last function called up will reappear the
next time you enter the trip computer menu.
i
All statistics stored since the last engine
start will be reset approximately 4 hours after
the SmartKey in the starter switch is turned to
position0 or removed from the starter switch.
Resetting will not occur if you turn the SmartKey
back to position1 or2 within this time period.

140 Controls in detailControl systemFuel consumption since last reset
Press button ÿ or è repeatedly
until you see the first function of the
trip computer menu.

Press button j or k repeatedly
until you see the following message in
the left multifunction display: From Reset
.
1Distance driven since last reset
2Average speed since last reset
3Time elapsed since last reset
4Average fuel consumption since last
resetResetting fuel consumption statistics

Press button ÿ or è repeatedly
until you see the first function of the
trip computer menu.

Press button j or k repeatedly
until you see the reading that you want
to reset in the left multifunction
display.

Press and hold the reset button in the
instrument cluster (
page 114) until
the value is reset to 0.Distance to empty

Press button ÿ or è repeatedly
until you see the first function of the
trip computer menu.

Press button j or k repeatedly
until you see this message in the left
multifunction display:
Range:
.
The calculated remaining driving range
based on the current fuel tank level ap-
pears in the right multifunction display.
Your driving style will affect the
accuracy of the calculated range.
i
The fuel consumption statistics reset auto-
matically to
0 when either of the following values
is exceeded:


distance covered: 99 999 miles


time elapsed: 9 999 hours
i
If only very little fuel is left in the tank, a
vehicle at the fuel pump is shown instead of the
range.

180 Controls in detailAutomatic transmissionUpshifting
Pull the right shift paddle2
(page 177).
or

Briefly press the gear selector lever to
the right in theD+direction.
The transmission shifts to the next
higher gear.If the red gearshift indicator lamp>
comes on in the speedometer display
(
page 29), shift to the next higher gear.
The fuel supply will otherwise be interrupt-
ed to prevent the engine from overrevving.
Mercedes-Benz SLR McLaren Roadster
722S:
If you have selected the 722S menu
(page 123) and
up appears in the right
multifunction display in addition to the red
gearshift indicator lamp>, shift to the
next higher gear. The fuel supply will other-
wise be interrupted to prevent the engine
from overrevving.
Deactivating manual gearshift program

Turn program mode selector switch1
(page 175) to the shift programC
orS.
The selected gearshift program ap-
pears in the right multifunction display.Emergency operation
(Limp-Home Mode)
If vehicle acceleration becomes less re-
sponsive or sluggish or the transmission
no longer shifts, the transmission is most
likely operating in limp-home (emergency
operation) mode. In this mode only second
gear and reverse gear can be activated.
Stop the vehicle in a safe location.

Move gear selector lever to park
positionP.

Turn off the engine.

Wait at least 10 seconds before
restarting.

Restart the engine.

Move gear selector lever to drive
positionD (for second gear) or reverse
gearR.

Have the transmission checked at an
authorized Mercedes-Benz Center as
soon as possible.
i
When you brake or stop, the transmission
shifts down to a gear from which you can easily
accelerate or take off.
!
In the manual program modeM, the trans-
mission will not upshift, even if the engine has
reached its overrevving range. Shift up to the
next gear before the engine has reached its over-
revving range. Make absolutely certain that the
engine speed does not reach the red marking on
the tachometer (
page 28). Otherwise the en-
gine could be damaged which is not covered by
the Mercedes-Benz Limited Warranty.


188 Controls in detailAutomatic climate controlDeactivating the automatic climate control system
Deactivating
It is possible to completely deactivate the
automatic climate control system. 
Press button M (
page 186).
The indicator lamp on the button
comes on.Reactivating

Press button M (
page 186).
The indicator lamp on the button goes
out.
or

Turn one of the temperature controls
on the automatic climate control
(page 186).
The indicator lamp on button M
goes out.Operating the automatic climate
control system in automatic mode
Air distribution and air volume can be
adjusted automatically by the automatic
climate control system. You can also ad-
just the settings for air distribution and air
volume manually.
Warning!
G
When the automatic climate control system
is switched off, the outside air supply and
circulation are also switched off. Only
choose this setting for a short time. Other-
wise the windows could fog up, impairing
visibility and endangering you and/or
others.
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.
i
When operating the automatic climate
control system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidifica-
tion is switched on. This function can be
switched off if necessary (
page 194).

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.