2009 MERCEDES-BENZ SLR Owner's Manual

185 Controls in detail
Automatic climate control
Function
1
Left side air vent, adjustable
2
Left center air vent, adjustable
3
Air temperature controls for center
and side air vents
4
Right center air vent, adjustable
5
Right side air vent, adjustable
6
Air volume control for right side air
vent
7
Air volume control for center air
vents
8
Air volume control for left side air
vent
9
Automatic climate control panel
i
For draft-free ventilation, move the sliders
for the center air vents to the middle position.

186 Controls in detailAutomatic climate controlAutomatic climate control panel
Function
1
Air distribution, left (automatic or
manual operation)
2
Front defroster
3
Air recirculation
4
Rear window defroster (
page 183)
5
Air distribution, right (automatic or
manual operation)
Function
6
Temperature control, right
7
Automatic climate control on/off
(entire system)
8
Residual heat/ventilation
9
Air volume control (automatic or
manual operation)
a
AC cooling on/off
b
Temperature control, left

187 Controls in detail
Automatic climate control
The automatic climate control is operation-
al whenever the engine is running. You can
operate the climate control system in ei-
ther the automatic or manual mode. The
system cools or heats the interior depend-
ing on the selected interior temperature
and the current outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the ±mode is activated
(
page 194).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents can be very
hot or very cold (depending on the set tem-
perature). This may cause burns or frostbite
to unprotected skin in the immediate area of
the air vents. Always keep sufficient dis-
tance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution controls (
page 190) to di-
rect the air to air vents in the vehicle interior
that are not in the immediate area of
unprotected skin.
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility and endangering you
and/or others.
i
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before its
scheduled interval. A clogged filter will reduce
the air volume to the interior.
If the vehicle interior is hot, ventilate the interior
before driving off. The automatic climate control
will then adjust the interior temperature to the
set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.

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).

189 Controls in detail
Automatic climate control
Air distribution in automatic mode
You can separately adjust the air distribu-
tion for each side of the passenger
compartment.
Activating
Press control button1 or 5
(page 186).
The control button is engaged.
TheU symbol on the control button
comes on. Air distribution for the re-
spective side of the passenger com-
partment is adjusted automatically.
Deactivating

Press control button 1 or 5
(page 186) once more.
The control button sticks up slightly.
The U symbol on the control button
goes out. Automatic air distribution for
the respective side of the passenger
compartment is switched off. Adjust
the air distribution manually
(page 190).Air volume in automatic mode
The air volume settings are the same for
the entire passenger compartment.
Activating

Press control button 9 (
page 186).
The control button is engaged.
TheU symbol on the control button
comes on.
Deactivating

Press control button 9 (
page 186)
once more.
The control button sticks up slightly.
The U symbol on the control button
goes out. Adjust the air volume
manually (
page 191).
Setting the temperature
Use temperature controls6 andb to
separately adjust the air temperature on
each side of the passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). The automatic
climate control will adjust to the set
temperature as fast as possible.
Increasing
Turn temperature control6
and/orb (
page 186) slightly
clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.

190 Controls in detailAutomatic climate controlDecreasing
Turn temperature control6
and/orb (
page 186) slightly
counterclockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Adjusting the temperature for the
center and side air vents
When outside temperatures are low, you
can manually raise the air temperature for
the center and side air vents. The
controls3 are located between the
center air vents (page 185).
Turning on warm air

Press the left button (red).
The indicator lamp on the button
comes on. Warm air will enter from the
center and side air vents.Turning off warm air

Press the left button (red).
The indicator lamp on the button goes
out. The air from the outlets will return
to the temperature set in the system.
Turning on cooler air

Press the right button (blue).
The indicator lamp on the button
comes on. Cooler air will enter from the
center and side air vents.
Turning off cooler air

Press the right button (blue).
The indicator lamp on the button goes
out. The air from the outlets will return
to the temperature set in the system.
Adjusting air distribution
Use air distribution controls1 and5
(page 186) to separately adjust the air
distribution on each side of the passenger
compartment. The following symbols are
found on the controls:

Press control button 1 or 5
(page 186) until the control button
sticks up slightly and the U symbol
on the control button is out.
Automatic air distribution for the re-
spective side of the passenger
compartment is switched off.
Symbol
Function
h
Directs air through the cen-
ter and side air vents
j
Directs air to the windows
V
Directs air into the entire
vehicle interior
k
Directs air to the footwells

191 Controls in detail
Automatic climate control

Turn control button to the desired
symbol.
The air distribution is adjusted accord-
ing to the chosen setting.
Opening the center air vents

Turn thumbwheel 7 (
page 185)
upward.
Center air vents 2 and 4
(
page 185) are open.
Closing the center air vents

Turn thumbwheel 7 (
page 185)
downward.
Center air vents 2 and 4
(
page 185) are closed.Opening the side air vents

Turn thumbwheel 6 and 8
(page 185) upward.
The corresponding side air vent is
open.
Closing the side air vents

Turn thumbwheel 6 and 8
(page 185) upward.
The corresponding side air vent is
closed.
Adjusting air volume
Use air volume control9 (
page 186) for
both automatic (
page 188) and manual
air volume adjustment. Nine blower
speeds are available.

Press control button9 (
page 186).
The control button sticks up slightly.
The U symbol on the control button
goes out. Automatic air volume control
is switched off. The air volume is ad-
justed corresponding to the set blower
speed.
Maximum cooling MAX COOL
If the left and right air distribution controls
as well as the airflow volume control are
set to U and there is a high need for
cooling, MAX COOL is activated.
This provides the fastest possible cooling
of the vehicle interior, when the soft top is
closed.
i
You can also turn the air distribution control
to a position between two symbols.
i
The air vents are continuously variable.

192 Controls in detailAutomatic climate controlFront defroster
You can use this setting to defrost the
windshield, for example if it is iced up.
You can also defog the windshield and the
door windows.
Activating
Press button P (
page 186).
The indicator lamp on the button
comes on.
The air conditioning switches to the
following functions automatically:


cooling on to dehumidify


maximum blower speed and
heating power


air flows onto the windshield
and the door windows


the air recirculation mode is
switched offDeactivating

Press button P (
page 186).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are in effect
again.Windshield fogged on the outside

Switch the windshield wipers on
(page 52).
If the automatic air distribution and air
volume are switched off:

Turn air distribution controls1 and 5
(page 186) to position h ork.
or

Press control buttons 1, 5 and 9
(page 186).
The control buttons are engaged.
TheU symbol on the control
buttons come on. Air distribution and
air volume are adjusted automatically.
i
Keep this setting selected only until the
windshield or the door windows are clear again.
i
The cooling remains switched on.
i
Keep this setting selected only until the
windshield is clear again.