2012 MERCEDES-BENZ S-Class temperature

XTo adjust the temperature: slide ZVÆ or
turn cVd the COMAND controller.XTo confirm the selection: press W the
COMAND controller.
Setting the air distribution
You can set the air distribution separately for
the driver’s and front-passenger side.
XSelect left air distribution ; or right air
distribution B by turning cVd the
COMAND controller and press W to
confirm.¯Directs air through the defroster ventsPDirects air through the center and side
air ventsODirects air through the footwell ventsSDirects air through the center, side and
footwell ventsaDirects air through the defroster and
footwell vents_Directs air through the defroster,
center, side and footwell ventsbDirects air through the defroster,
center and side air ventsWControls air distribution automaticallyXTo adjust the air distribution: turn cVd
the COMAND controller.XTo confirm the selection: press W the
COMAND controller.Setting the airflow
You can set the airflow separately for the
driver’s and front-passenger side.
XSelect left airflow = or right airflow A by
turning cVd the COMAND controller and
press W to confirm.XTo adjust the airflow: slide ZVÆ or turn
cVd the COMAND controller.XTo confirm the selection: press W the
COMAND controller.
Climate control main menu
COMAND allows you to set additional
functions which cannot be selected using the
control panel in the center console. Call up
these functions using the climate control
main menu.
XTo open the climate control main
menu: select the AC climate control
symbol in the air-conditioning function bar
by turning cVd the COMAND controller
and press W to confirm.
The climate control menu opens.266VehicleCOMAND

Climate control main menu
You can:
R switch cooling with dehumidification on or
off ( Æ )
R control climate control centrally ( Mono)
R adjust the Footwell Temperature
R set the Airflow for the air vents
R operate the Rear air conditioning from the
front
Switching cooling with air
dehumidification on/off
Cooling is operational when the engine is
running, and cools according to the selected
interior temperature for the vehicle. Cooling
also dehumidifies the air inside the vehicle
and, thereby, prevents the windows from
fogging up.
GWARNING
If you switch off cooling with
dehumidification, the vehicle will not be
cooled and the air not dehumidified in warm
weather conditions. The windows can mist up
faster. This could result in your no longer
being able to observe the traffic conditions
properly and you may cause an accident.
i Condensation may collect on the
underside of the vehicle when the cooler is
operating.
XSelect the climate control main menu in the
air-conditioning function bar by turningcVd the COMAND controller and press
W to confirm.
The climate control menu opens.XTo switch on: select Æ and press W.XTo switch off: select Æ and press W.
A tick appears.
Controlling climate control centrally
You can use the Mono function to set all the
air-conditioning zones in the vehicle to the
same settings. If the Mono function is
switched on and you adjust climate control
on the driver’s side, these changes will also
be made in all the air-conditioning zones.
XSelect the climate control main menu in the
air-conditioning function bar by turning
cVd the COMAND controller and press
W to confirm.
The climate control menu opens.XSelect Mono and press W.
A tick appears when the function is
selected.
The Mono function is automatically switched
off if you:
Vehicle267COMANDZ

Rchange settings for automatic climate
control on the front-passenger side using
COMAND
R press one of the rocker switches to operate
automatic climate control on the front-
passenger side
R press one of the rocker switches on the
rear-compartment control panel
Adjusting the footwell temperature
You can use the Footwell Temperature
function to set the temperature difference
between the footwell and the rest of the
vehicle interior.
i This setting is quite effective in automatic
mode, especially at low outside
temperatures.
The greater the value you set, the higher the
temperature in the footwell.XSelect the climate control main menu in the
air-conditioning function bar by turning
cVd the COMAND controller and press
W to confirm.
The climate control menu opens.XSelect Footwell Temperature and press
W .
A scale appears.XTo change the temperature difference:
slide ZVÆ or turn cVd.XTo confirm your selection: press W.Setting the blower settings for the air
vents
This function allows you to determine the way
the air is blown through the air vents in
automatic mode.
You can select:
R Focused (high blower setting)
R Medium (standard setting)
R Diffuse (low blower setting)
i This setting is quite effective in automatic
mode, especially at high outside
temperatures.
If the vehicle has become very warm and the
automatic air conditioning is cooling the
interior, the blower settings are briefly
canceled.XSelect the climate control main menu in the
air-conditioning function bar by turning
cVd the COMAND controller and press
W to confirm.
The climate control menu opens.XSelect Airflow and press W.
A menu appears.
The current setting is indicated by a # dot.XTo change the airflow: slide ZVÆ or turn
cVd .XTo confirm your selection: press W.
Operating the rear-compartment air-
conditioning system from the front
The rear-compartment air-conditioning
system is operated in the same way as
268VehicleCOMAND

the high-beam headlamps are switched on
automatically. The K indicator lamp in
the instrument cluster also lights up.
When you drive slower than approximately
30 mph (45 km/h) or if other road users
are identified or if the roads are sufficiently
illuminated:
the high-beam headlamps are switched off
automatically. The K indicator lamp in
the instrument cluster goes out. The _
indicator lamp in the instrument cluster
stays on.XTo deactivate: move the combination
switch back to its normal position.
The _ indicator lamp in the instrument
cluster goes out.GWARNING
The Adaptive Highbeam Assist is only an aid
intended to support you while driving. The
driver is and remains responsible for proper
vehicle lighting in accordance with the
prevailing light, sight and traffic conditions.
The system may be impaired or unavailable
when
R visibility is poor, e.g. due to snow, rain, fog,
or heavy spray
R the optical sensor area of the windshield is
dirty, fogged up, or covered by a sticker for
example
The system cannot recognize the following
road users:
R Road users without a lighting system of
their own, e.g. pedestrians
R Road users with dim lighting of their own,
e.g. cyclists
R Road users whose lighting is obstructed,
e.g. road users behind a guardrail
R In some seldom cases, even road users with
a lighting system of their own may be
recognized too late or not at all.
The automatic high-beam headlamps will then
not be deactivated or it will be activated in
spite of preceding or oncoming road users.
This could endanger you and/or others and
cause an accident. Always pay close attention
to the traffic situation and switch off the high
beam manually if necessary.
Headlamps fogged up on the inside
The headlamps may fog up on the inside if
there is high atmospheric humidity.
XDrive with the headlamps switched on.
The level of moisture diminishes,
depending on the length of the journey and
the weather conditions (humidity and
temperature).
If the level of moisture does not diminish:
XHave the headlamps checked at a qualified
specialist workshop.
Interior lighting
Overview of interior lighting
Front overhead control panel
:p Switches the left-hand reading lamp
on/off;u Switches the rear interior lighting
on/off=c Switches the front interior lighting
on/off?| Switches the automatic interior
lighting control on/offAp Switches the right-hand reading
lamp on/offInterior lighting281Lights and windshield wipersZ

Useful information
i This Operator's Manual describes all
models and all standard and optional
equipment of your vehicle available at the
time of publication of the Operator's
Manual. Country-specific differences are
possible. Please note that your vehicle may
not be equipped with all features
described. This also applies to safety-
related systems and functions.
i Please read the information on qualified
specialist workshops ( Y page 31).
Overview of climate control systems
Important safety notes
GWARNING
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 blocked filter replaced at a Mercedes-
Benz Center as soon as possible.
GWARNING
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise, the windows could fog up,
impairing visibility and endangering you and
others.
The automatic climate control controls the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
The automatic climate control is only
operational when the engine is running 16
.
Optimum operation is only achieved if you
drive with the side windows and sliding
sunroof/panorama roof with power tilt/
sliding panel closed.
You can also set some automatic climate
control functions via COMAND (Y page 265).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 93).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter can filter out most
particles of dust and completely filters out
pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the
interval for replacing the filter, which is
specified in the Service Booklet. As it
depends on environmental conditions, e.g.
heavy air pollution, the interval may be
shorter than stated in the Service Booklet.
i It is possible that the blower may be
activated automatically 40 minutes after
the SmartKey is removed. The vehicle is
then ventilated for 30 minutes to dry the
air-conditioning system.16 The residual heat function can only be activated/deactivated if the ignition is switched off.290Overview of climate control systemsClimate control

Automatic climate control panelFront control panel:Sets climate control to automatic mode, left (Y page 293);Sets the temperature, left ( Y page 294)=Sets the airflow, left ( Y page 295)?Defrosts the windshield ( Y page 296)AActivates/deactivates air-recirculation mode ( Y page 297)BSwitches climate control on /off( Y page 292)CSwitches the residual heat function on/off( Y page 298)DSwitches the rear window defroster on/off ( Y page 297)ESets the airflow, right ( Y page 295)FSets the temperature, right ( Y page 294)GSets climate control to automatic mode, right ( Y page 293)Rear control panel HSets the temperature, left ( Y page 294)ISets the air distribution, left ( Y page 295)JSets the airflow ( Y page 295)KOFF Switches rear-compartment climate control off ( Y page 292)AUTO Sets rear-compartment climate control to automatic mode ( Y page 293)MAN Sets rear-compartment climate control to manual mode ( Y page 293)LSets the air distribution, right ( Y page 295)MSets the temperature, right ( Y page 294)Overview of climate control systems291Climate controlZ

Notes on using climate control
Below, you can find a number of notes and
recommendations to help you use climate
control optimally.
R Activate climate control using the Ã
rocker switch. The indicator lamp in the
à rocker switch lights up.
R Set the temperature to 72 ‡ (22 †).
R Only use the "defrosting" function briefly
until the windshield is clear again.
R Only use "air-recirculation" mode briefly,
e.g. if there are unpleasant outside odors
or when in a tunnel. The windows could
otherwise fog up as, in air-recirculation
mode, no fresh air is drawn into the vehicle.
R Use the residual heat function if you want
to heat or ventilate the vehicle interior
when the ignition is switched off. The
"residual heat" function can only be
activated or deactivated with the ignition
switched off.
Operating the climate control system
Activating/deactivating climate
control
Important information
GWARNING
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility and
endangering you and others.
i Switch on climate control primarily using
the à rocker switch ( Y page 293).
Switching the front climate control on/
off using the front control panelXTurn the SmartKey to position 2 in the
ignition lock.XTo activate: press the ^ rocker switch
up or down.
The indicator lamp in the rocker switch
goes out. The previously selected settings
come into effect again.XTo deactivate: press the ^ rocker
switch up or down.
The indicator lamp in the rocker switch
lights up.
Switching the rear-compartment
climate control on/off using the front
control panel
XTurn the SmartKey to position 2 in the
ignition lock.XActivate the Y rear compartment
function via COMAND ( Y page 268).
The rear-compartment climate control can
be controlled via the front control panel
using the Y rear compartment function.XTo activate: press the ^ rocker switch
up or down.
The indicator lamp in the rocker switch
goes out. The previously selected settings
come into effect again.XTo deactivate: press the ^ rocker
switch up or down.
The indicator lamp in the rocker switch
lights up.292Operating the climate control systemClimate control

Switching the rear-compartment
climate control on/off using the rear
control panelXTurn the SmartKey to position 2 in the
ignition lock.XTo switch on: press rocker switch
K (Y page 291) up or down and select
AUTO .
or
XPress rocker switch K(Y page 291) up or
down and select MAN.XTo switch off: press rocker switch
K (Y page 291) up or down and select
OFF .
Activating/deactivating cooling with
the air dehumidification function
Important information
The cooling with air dehumidification function
is only available when the engine is running.
The air inside the vehicle is cooled and
dehumidified according to the temperature
selected.
GWARNING
If you switch 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 others.
Condensation may drip from the underside of
the vehicle when it is in cooling mode. This is
normal and not a sign that there is a
malfunction.
You can activate or deactivate the cooling
with air dehumidification function via
COMAND ( Y page 267).
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Problems with the cooling with air
dehumidification function
If you can no longer switch on the cooling with
air dehumidification function via COMAND,
the cooling with air dehumidification function
is switched off due to a malfunction.
XConsult a qualified specialist workshop.
Setting climate control to automatic
GWARNING
If you switch 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 others.
In automatic mode, the set temperature is
maintained automatically at a constant level.
The system automatically regulates the
temperature of the dispensed air, the airflow
and the air distribution.
Automatic mode will achieve optimal
operation if cooling with air dehumidification
is also activated. If desired, cooling with air
dehumidification can be deactivated.
Controlling the front climate control
using the front control panel
XTurn the SmartKey to position 2 in the
ignition lock.XSet the desired temperature.X To switch on: press the à rocker
switch up or down.
The indicator lamp in the à rocker
switch lights up.Operating the climate control system293Climate controlZ