climate settings MERCEDES-BENZ S-Class 2012 W221 Owner's Manual

Climate controlAutomatic climate control .............291
COMAND ....................................... 265
Controlling automatically ...............293
Controlling centrally (COMAND) ....267
Cooling with air dehumidification ..293
Cooling with air dehumidification
(COMAND) ..................................... 267
Defrosting the windows .................296
Defrosting the windshield ..............296
Important safety notes ..................290
Indicator lamp ................................ 293
Main menu ..................................... 266
Maximum cooling .......................... 296
Overview of systems ......................290
Problems with cooling with air
dehumidification ............................ 293
Problem with the rear window
defroster ........................................ 297
Rear compartment (COMAND) ......268
Rear control panel .........................291
Refrigerant ..................................... 528
Setting the air distribution .............295
Setting the airflow .........................295
Setting the airflow (COMAND) .......268
Setting the air vents ......................298
Setting the footwell temperature
(COMAND) ..................................... 268
Setting the temperature ................294
Switching air-recirculation mode
on/off ............................................ 297
Switching on/off ........................... 292
Switching residual heat on/off ......298
Switching the rear window
heating on/off ............................... 297
Coat hooks ......................................... 434
Cockpit Overview .......................................... 34
see Instrument cluster
Color, setting (TV, video) .................. 240
COMAND At a glance (overview) .................... 118
Back button ................................... 119
Basic functions .............................. 133
Components .................................. 118
Display ........................................... 121
Example of operation .....................128
Function buttons ........................... 119Menu overview .............................. 121
Remote control .............................. 125
Switching on/off ........................... 133
System settings ............................. 143
COMAND controller ........................... 118
COMAND display Cleaning instructions .....................125
Folding in and swiveling .................124
Setting ........................................... 143
COMAND operating system .............. 118
Combination switch .......................... 279
Compass function ............................. 188
Conference connection ..................... 201
Consumption statistics (on-board
computer) .......................................... 376
Contrast, setting (TV, video) ............ 240
Convenience closing feature .............. 94
Convenience opening feature ............ 93
Convenience telephone Importing contacts ........................204
Convenience telephony .................... 193
Introduction ................................... 193
Coolant (engine)
Checking the level .........................460
Display message ............................ 404
Notes ............................................. 529
Temperature (on-board computer) . 379
Temperature gauge ........................ 372
Cooling
see Climate control
Copy protection (CD/DVD) ............... 229
Cornering light function Display message ............................ 401
Function/notes ............................. 280
Cruise control
Cruise control lever .......................331
Deactivating ................................... 332
Display message ............................ 415
Driving system ............................... 330
Function/notes ............................. 330
Important safety notes ..................330
LIM indicator lamp .........................331
Setting a speed .............................. 332
Storing and maintaining current
speed ............................................. 3318Index

Radio-controlled devices
(installing) .......................................... 454
Read-aloud function .......................... 174
Reading lamp ..................................... 281
Real-time traffic reports ................... 174
Rear compartment Activating/deactivating climate
control ........................................... 292
Setting the air distribution .............295
Setting the airflow .........................295
Setting the air vents ......................299
Setting the temperature ................294
Rear fog lamp
Display message ............................ 402
Switching on/off ........................... 278
Rear seat
Adjusting ....................................... 104
Rear Seat Entertainment System
Adjusting the sound settings .........248
Audio mode (CD, DVD, MP3) .........250
AUX mode ...................................... 258
Changing batteries (remote
control, headphones) .....................247
Changing the picture format ..........249
Components/overview ..................138
Headphones (cordless) ..................142
Multiple users ................................ 248
Overview of picture settings ..........249
Remote control .............................. 140
Screen ........................................... 139
Setting the audio format ................258
System settings ............................. 249
Using headphones .........................248
Using the main loudspeaker ..........248
Video DVD mode ........................... 254
Rear seats
Overview .......................................... 42
Rear view camera
Cleaning instructions .....................467
Function/notes ............................. 354
Rear-view mirror ............................... 112
Rear window blind ............................ 439
see Rear window roller sunblind
see Roller sunblind
Rear window defroster
Problem (malfunction) ...................297
Rear window heating
Switching on/off ........................... 297Redialing (telephone) ........................ 200
Refueling Fuel gauge ....................................... 35
Important safety notes ..................317
Refueling process ..........................319
see Fuel
Remote control
Garage door opener .......................450
Remote operation
Selecting a screen (Rear Seat
Entertainment System) ..................140
Switching a screen on/off (Rear
Seat Entertainment System) ..........140
Reporting
Malfunctions relevant to safety ........ 31
Reserve (fuel tank)
see Fuel
Reserve fuel
Display message ............................ 407
Warning lamp ................................. 428
see Fuel
Reset function ................................... 150
Resetting (factory settings) ............. 150
Residual heat (climate control) ........ 298
Restraint system see SRS (Supplemental Restraint
System)
Reversing lamps (display
message) ............................................ 403
Road map see Map
Roadside Assistance (breakdown) .... 29
Roller blind see Roller sunblind
Roller sunblind
Panorama roof with power tilt/
sliding panel ..................................... 97
Rear side windows ...........................93
Rear window .................................. 439
Rear window (COMAND) ................261
Roller sunblind of the panorama
roof with power tilt/sliding panel Operating (front roller sunblind) ....... 98
Operating (rear roller sunblind) ........98
Roof carrier ........................................ 436
Roof lining and carpets (cleaning
guidelines) ......................................... 469Index19

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

climate control for the driver and front
passenger.
Switching on operation of the rear-
compartment air conditioning from the
frontXSelect 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 Rear Y and press W.
Rear appears in the main menu on the air-
conditioning function bar. The rear-
compartment air-conditioning system can
be controlled from the front.
Main menu for the rear-compartment air-
conditioning system
In the main menu for the rear-compartment
air-conditioning system, you can:
R switch back to front-compartment climate
control operation
R switch off the rear-compartment air
conditioning
R switch automatic mode for the rear-
compartment air conditioning on/off
XTo open the main menu: select the
climate control main menu in the air
conditioning function bar and press W.
The current setting is indicated by a # dot.
To switch back to operation of the rear-
compartment air-conditioning system from
the front:XIn the climate control main menu, select
Front Climate Control and press W.
The air-conditioning function bar shows the
climate control settings for the driver and
front passenger.
To switch off the rear-compartment air
conditioning:
XIn the climate control main menu, select
Rear Climate Control OFF and press
W .
To switch on automatic mode for the rear-
compartment air conditioning:
XIn the climate control main menu, select
Rear Automatic and press W.
Automatic mode for the rear-compartment
air-conditioning system is switched on.
Seats
Lumbar supports
The lumbar support in the backrest of the
driver's and front-passenger seats can be
adjusted to provide optimum support for your
back.
XTo select the seat: press the T
function button.
The main area of the COMAND display is
active. A scale appears.Vehicle269COMANDZ

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

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

XTo deactivate: press the K rocker
switch up or down.
The indicator lamp in the à rocker
switch goes out.
or
XSet the air distribution using COMAND
( Y page 266).
The indicator lamp in the à rocker
switch goes out.
Controlling the rear-compartment
climate control automatically 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).
Rear-compartment climate control can be
controlled via the front control panel using
the Y rear compartment function.XSet the desired temperature.X To switch on: press rocker switch Ã
up or down.
The indicator lamp in the à rocker
switch lights up.XTo deactivate: press the K rocker
switch up or down.
The indicator lamp in the à rocker
switch goes out.
or
XSet the air distribution using COMAND
( Y page 266).
The indicator lamp in the à rocker
switch goes out.
i To return to the standard display, activate
the front climate control function via
COMAND ( Y page 268).
i The rear display changes to the standard
display automatically after five seconds.
Controlling the rear-compartment
climate control automatically using the
rear control panelXTurn the SmartKey to position 2 in the
ignition lock.XSet the desired temperature.X To activate: press rocker switch K up or
down and select AUTO(Y page 291).XTo deactivate: press rocker switch K up
or down and select MAN or
OFF (Y page 291).
Setting the temperature
Climate control climate zones
You can select different temperature settings
for the driver's and front-passenger sides as
well as for the left and right sides of the rear
compartment and the footwells.
Setting the front-compartment
temperature using the front control
panel
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: press the w
rocker switch up or down.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
i You can also use COMAND to set the
temperature ( Y page 265).
294Operating the climate control systemClimate control

Setting the temperature in the rear
compartment using the front control
panelXTurn 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 increase/reduce: press the w
rocker switch up or down.
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
i To return to the standard display, activate
the front climate control function via
COMAND ( Y page 268).
i The rear display changes to the standard
display automatically after five seconds.
Setting the temperature in the rear
compartment using the rear control
panel
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: press rocker
switch H or M up or down ( Y page 291).
Only change the temperature setting in
small increments. Start at 72 ‡ (22 †).
Setting the footwell temperature
The footwell temperature can be set via
COMAND ( Y page 268).
Setting the air distribution
Air distribution settings
The air distribution can be set individually for
the driver's and front-passenger sides.
¯Directs air through the defroster ventsPDirects air through the center and side
air ventsODirects the airflow through the
footwell air 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 ventsWSets the air distribution to automatic
Setting the air distribution in the front/
rear compartment using COMAND
The air distribution can be set using COMAND
( Y page 266).
Setting the rear-compartment air
distribution using the rear control panel
XTurn the SmartKey to position 2 in the
ignition lock.XPress rocker switch I or L up or down
repeatedly ( Y page 291) until the desired
air distribution symbol is shown in the
display.
Setting the airflow
Setting the front-compartment airflow
using the front control panel
You can select different airflow settings for
the driver's and front-passenger sides as well
as for the rear compartment.
You can also use COMAND to set the airflow
( Y page 266).
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: press the K
rocker switch up or down.Operating the climate control system295Climate controlZ

Setting the rear-compartment airflow
using the front control panelXTurn 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 increase/reduce: press the K
rocker switch up or down.
Setting the rear-compartment airflow
using the rear control panel
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: press rocker switch
J up or down ( Y page 291).
Defrosting the windshield
You can use this function to defrost the
windshield or to defrost the inside of the
windshield and the side windows.
i You should only select the defrosting
function until the windshield is clear again.
XTurn the SmartKey to position 2 in the
ignition lock.XTo switch on: press the ¬ rocker
switch up or down.
The indicator lamp in the ¬ rocker
switch lights up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow 17
R high temperature 17
R air distribution to the windshield and
front side windows
R air-recirculation mode offXTo deactivate: press the ¬ rocker
switch up or down.
The indicator lamp in the ¬ rocker
switch goes out. The previously selected
settings come into effect again. The cooling
with air dehumidification function remains
on. Air-recirculation mode remains
deactivated.
or
XPress the w rocker switch up or down.
or
XPress the K rocker switch up or down.
MAX COOL maximum cooling
The MAX COOL function is only available in
vehicles for the USA.
MAX COOL is only operational when the
engine is running.
The MAX COOL function is activated
automatically:
R if climate control is set to automatic
( Ã ) on both sides
R if additional cooling is used
The display shows MAX COOL.
This is the quickest way to cool the vehicle
interior when the sliding sunroof and the side
windows are closed.
Defrosting the windows
Windows fogged up on the inside
XActivate the cooling with air
dehumidification function via COMAND
( Y page 267).XActivate automatic mode Ã.XIf the windows continue to fog up, activate
the defrosting function ( Y page 296).
i
You should only select this setting until
the windshield is clear again.
17 Depending on the outside temperature.296Operating the climate control systemClimate control