2008 MERCEDES-BENZ SL55AMG automat

188 Controls in detail
Automatic climate control

189 Controls in detail
Automatic climate control
Item
1Defroster air vents, fixed
2Left center air vent, adjustable
3Cockpit air vent, fixed
4Right center air vent, adjustable
5Right side air vent, adjustable
6Air volume control for right side air
vent
7Air volume control for center air
vents
8Air volume control for left side air
vent
9Automatic climate control panel
aLeft side air vent, adjustable
iFor draft-free ventilation, move the sliders
for center air vent and side air vents to the
middle position.

190 Controls in detail
Automatic climate control
Automatic climate control panel
The automatic climate control is operation-
al whenever the engine is running. You can
operate the automatic climate control
system in either the automatic or manual
mode. The system cools or heats the
interior depending on the selected interior
temperature and the current outside
temperature.Item
1Air distribution, left
2Front defroster
3Air recirculation
4Rear window defroster
5Air distribution, right
6Temperature control, right
7Automatic climate control on/off
(entire system)
8Residual heat/ventilation
9Air volume control
aAC cooling on/off
bTemperature control, left
Warning!G
When operating the automatic climate
control, the air that enters the passenger
compartment through the air vents can be
very hot or very cold (depending on the set
temperature). This may cause burns or frost-
bite on unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the air vents. If necessary, use the
air distribution control (
page 190) to di-
rect the air to air vents in the vehicle interior
that are not in the immediate area of unpro-
tected skin.

191 Controls in detail
Automatic climate control
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 A/Cmode is deactivated
(
page 198).Deactivating the automatic climate
control system
Deactivating
Press button ´ (page 190).
The indicator lamp on the button
comes on.Warning!G
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval.
A clogged filter will reduce the air volume to
the interior and the windows could fog up,
impairing visibility and endangering you and
others. Have a clogged filter replaced as
soon as possible at an authorized
Mercedes-Benz Center.
Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iIf the vehicle interior is hot, ventilate the in-
terior 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.
When the retractable hardtop is closed, do not
obstruct air flow by placing objects on the air
flow-through exhaust slots below the rear win-
dow.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 when the
retractable hardtop is closed. Otherwise the
windows could fog up, impairing visibility
and endangering you and others.

192 Controls in detail
Automatic climate control
Reactivating
Press button ´ (page 190).
The indicator lamp on the button goes
out.
The previous settings are in effect
again.
or
Turn one of the temperature controls
on the automatic climate control panel
(
page 190).
The indicator lamp on button ´
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.Air distribution in automatic mode
You can separately adjust the air distribu-
tion for each side of the passenger com-
partment.
Activating
Press control button1 or 5
(
page 190).
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 190) 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 194).
iWhen 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 dehumidify is
switched on. This function can be switched off if
necessary (
page 190).

193 Controls in detail
Automatic climate control
Air volume in automatic mode
The air volume settings are the same for
the entire passenger compartment.
Activating
Press control button 9 (page 190).
The control button is engaged.
TheU symbol on the control button
comes on.
Deactivating
Press control button 9 (page 190)
once more.
The control button sticks up slightly.
The U symbol on the control button
goes out. Adjust the air volume manu-
ally (
page 195).
Setting the temperature
Use temperature controls6 andb
(
page 190) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, 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 190) slightly
clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.Decreasing
Turn temperature control6
and/orb (
page 190) slightly
counterclockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.

194 Controls in detail
Automatic climate control
Adjusting air distribution
Use air distribution controls1 and5
(
page 190) 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 190) until the control button
sticks up slightly and the U symbol
on the control button is out.
Automatic air distribution for the
respective side of the passenger
compartment is switched off.
Turn control button to the desired
symbol.
The air distribution is adjusted
according to the chosen setting.
Opening the center air vents
Turn thumbwheel 7 (page 188)
upward to the first stop.
Center air vents 2 and 4
(
page 188) are open.
Opening the cockpit air vent and center
air vents
Turn thumbwheel 7 (page 188) up-
ward all the way.
Cockpit air vent 3 and center
air vents2 and 4 (
page 188)
are open.Closing the cockpit air vent and center
air vents
Turn thumbwheel 7 (page 188)
downward.
Cockpit air vent 3 and center
air vents2 and 4 (
page 188)
are closed.
Opening the side air vents
Turn thumbwheel 6 and 8
(
page 188) upward.
The corresponding side air vent is
open.
Closing the side air vents
Turn thumbwheel 6 and 8
(
page 188) upward.
The corresponding side air vent is
closed.
SymbolFunction
hDirects air through the cen-
ter and side air vents
jDirects air to the windows
VDirects air into the entire
vehicle interior
kDirects air to the footwells
iYou can also turn the air distribution control
to a position between two symbols.
iThe air vents are continuously variable.

195 Controls in detail
Automatic climate control
Adjusting air volume
Use air volume control9 (
page 190) for
both automatic (
page 192) and manual
air volume adjustment. Nine blower
speeds are available.
Press control button9 (page 190).
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 MAXCOOL
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, MAXCOOL is activated.
“MAX COOL” appears on the temperature
controls 6 and b (
page 190).
This provides the fastest possible cooling
of the vehicle interior (when retractable
hardtop is closed).
Automatic climate control panel with
MAXCOOL activated
Front 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
side windows.
iKeep this setting selected only until the
windshield or the side windows are clear again.