MERCEDES-BENZ S55AMG 2000 W220 Owner's Manual

168 Automatic climate control
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Basic setting – automatic mode
There are three basic settings for the automatic mode:
•Automatic air volume control
•Automatic air outlet control, left and right
•Automatic air outlet control, center, see page 165
We recommend these settings to be used all year round.Air volume and distribution are controlled
automatically.
Set the temperature switches on the left and right to
72°F (22°C). This provides for comfortable conditions in
the vehicle.
Automatic airf low regulation:
Press the A on the air volume switch. The display shows
“AUTO”.
Automatic air distribution:
Press on both U knobs until they click in. The h,
j and k symbols will no longer be visible.
The economy mode and air recirculation functions will
be switched off. The automatic blower will be activated
at the same time.

169 Automatic climate control
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(use only for short duration)
Air distribution, manual:
Press U button. The button pops out, the h, j
and k symbols are visible. Turn the button to select
the air distribution desired.
hAir from the center, side and door air outlets.
jAir from the center, side, door and windshield air
outlets.
kAir from the center, side, door and footwell air
outlets.
To return to automatic mode:
Press the U button until it clicks in. The h, j
and k symbols will no longer be visible.Air volume, manual
Press the air volume switch up or down. Seven blower
speeds can be selected.

170 Automatic climate control
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Defrosting
Press the P button. The display shows P.
The fan is set to a higher speed and the warm air is
directed to the defroster and windshield air outlets.
Pressing the switch again returns the system to the
previous setting.Windows fogged on the inside
Switch off the economy mode, if selected: Press
buttonS. The indicator lamp in the button will go
out.
Switch off air recirculation, if selected: Press
buttonO. The indicator lamp in the button will go
out.
Adjust left and right air outlets upwards.
Set blower to the maximum blower speed.
Increase temperature setting.
Open the side air outlets and direct them onto the side
windows.
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171 Automatic climate control
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cluster displayPractical hints Car care Index Windshield fogged on the outside
Switch on the windshield wiper.
Press on both U buttons until they click in. The
h, j and k symbols will no longer be visible.
Air recirculation
Select air recirculation:
The indicator lamp in the O button is off.
Press button O briefly. The indicator lamp in the
button illuminates.
To switch off the air recirculation:
The indicator lamp in the O button is on.
Press button O briefly. The indicator lamp in the
button will go out.
Switching on air recirculation and activating
convenience closing:
The indicator lamp in the O button is off.
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off air recirculation and activating
convenience opening:The indicator lamp in the O button is on.
Press button O for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.
The system automatically switches from air
recirculation to fresh air:
•after 30 minutes if the outside temperature is above
about 40°F(5°C),
•after 5 minutes if the outside temperature is below
about 40°F(5°C),
•after 5 minutes if economy mode S is selected.
The system switches automatically to air recirculation at
high outside temperatures. A quantity of outside air is
added after about 30 minutes.
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.

172 Automatic climate control
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Activated charcoal filter
An activated charcoal filter markedly reduces bad odors
and removes pollutants from air entering the passenger
compartment.
To select, press e button. The indicator lamp in the
button illuminates.
To cancel, press button. The indicator lamp in the button
goes out.
The system switches automatically to the air
recirculation mode, if the carbon monoxide (CO) or
nitrogen oxides (NO
X) concentration of the outside air
increases beyond a predetermined level.
The automatic air recirculation mode does not function
if economy mode S is selected or if the outside
temperature has fallen below 40°F(5°C).
The activated charcoal filter should be switched off
when windows fog up on the inside, or if the passenger
compartment needs to be quickly heated or cooled
down.Switching on the activated carbon filter and activating
convenience closing:
The indicator lamp in the e button is off.
Press button e for more than 2 seconds, the side
windows and the sliding / pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off activated carbon filter and activating
convenience opening:
The indicator lamp in the e button is on.
Press button e for more than 2 seconds, the side
windows and the sliding / pop-up roof return to the
position they were in before closing.
A window or the sliding / pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.

173 Automatic climate control
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The function of this setting corresponds to the
automatic mode. However, because the air conditioning
compressor will not engage (fuel savings), it is not
possible to air condition in this setting.Press S button to activate. The indicator lamp in the
button illuminates.
Press S button once again to return to the previous
setting.
Important!
In the S mode the windows could fog up on the
inside. Switch off S mode.

174 Automatic climate control
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Residual engine heat utilization
With the engine switched off, it is possible to continue
to heat or ventilate the interior for a short while. Air
volume and distribution are controlled automatically.
To s elec t:
Turn the electronic key in starter switch to position 1
or 0 or remove it altogether.
Press button T. The display shows “REST”.
This function selection will not activate if the battery
level is insufficient. The function switches off automatically:
•if the electronic key in starter switch is turned to
position 2,
•after approximately 30 minutes (if residual engine
heat utilization is selected on the optional rear air
conditioner: after approximately 15 minutes),
•if the battery voltage drops.
Note:
The battery symbol # will appear in the automatic
climate control display some time before the residual
engine heat utilization is switched off if the battery
voltage drops.

175 Automatic climate control
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cluster displayPractical hints Car care Index Switching the automatic climate control on and off
To s wi tch o f f:
Press button 0. The display shows “0”.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily,
otherwise the windshield could fog up.
To s wi tch o n :
Press button 0 or P or at least one of the U
buttons so that it pops out and then click it back in. Front center console storage compartment
ventilation
The front center console compartment has its own air
outlet.
To open: Slide the lever up.
To close: Slide the lever down.
The air volume is dependent on the setting of:
•air distribution control,
•air volume control,
•air outlets in the dashboard.
The air temperature is about the same as that of the
dashboard air outlets. It cannot be regulated separately.
Note:
The compartment can get very warm due to its confined
space. When storing heat sensitive objects in the
compartment, close the air outlet while heating the
passenger compartment.
Do not allow articles to obstruct the air outlet in the
storage compartment.

176 Automatic climate control
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Rear passenger compartment adjustable air outlets
1Center air outlet, left
2Center air outlet, right
3Air volume control for center air outlets
(vehicles without rear air conditioner)
To open: Turn the wheel to the left.4Rear side air outlet, right and left
5Air volume control for rear side air outlet
To open: Turn thumbwheel towards the window.
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177 Automatic climate control
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cluster displayPractical hints Car care Index Rear passenger compartment climate control
1On / off
Residual engine heat utilization, see page 174.
2Display
Depending on the ambient light conditions, the
figures on the display will be shown as dark figures
on a bright background (in daylight) or as, bright
figures on a dark background (at night).3Air distribution up / down
4Temperature control, right
5Air volume (automatic, manual)
6Temperature control, left
7Adjustable rear center air outlet, left
8Adjustable rear center air outlet, right
Note:
The rear air conditioner will not cool the air if the
Sbutton on the automatic air conditioner is pressed.
The temperature on both sides is automatically set to
72°F(22°C) if the rear seats are not occupied (rear seat
belts unbuckled).
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