cooling MERCEDES-BENZ S-Class 2011 W221 Owner's Manual

1, 2, 3 ...
12 V socket ........................................ 431
4ETS see ETS/4ETS
4MATIC (permanent four-wheel
drive) .................................................. 339
A
ABC see Active Body Control
ABC (Active Body Control)
Display message ............................ 403
ABS (Anti-lock Braking System)
Display message ............................ 388
Function/notes ................................ 67
Warning lamp ................................. 415
Active Blind Spot Assist
Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................356
Active Body Control (ABC) ................ 338
Active Driving Assistance package . 355
Active Lane Keeping Assist Activating/deactivating (on-
board computer) ............................ 376
Display message ............................ 404
Function/information ....................359
Active light function (display
message) ............................................ 397
Active multicontour seat .......... 106, 268
Active partition (USB devices only) Selecting ........................................ 234
Active service system
see Service interval display
ADAPTIVE BRAKE ................................. 71
Adaptive brake lamps ......................... 69
Adaptive Damping System (ADS) ..... 337
Adaptive Highbeam Assist Display message ............................ 397
Switching on/off ........................... 275
Switching on/off (on-board
computer) ...................................... 377
Additional speedometer ................... 377
Address book
Calling up ....................................... 201
Connecting a call ........................... 204
Creating an entry ........................... 203
Deleting an entry ........................... 204
Importing contacts ........................200
Introduction ................................... 200
Starting route guidance .................204
Voice tag ....................................... 205
Address book entry
Adopting as a home address .........175
Address entry menu .......................... 151
Air bags Display message ............................ 386
Front air bag (driver, front
passenger) ....................................... 46
Important safety notes ....................44
Safety guidelines ............................. 43
Side impact air bag ..........................46
Window curtain air bag ....................47
Air-conditioning system
see Climate control
Air dehumidification
Activating/deactivating with
cooling ........................................... 289
Air distribution
Setting ........................................... 291
Setting (COMAND) .........................262
Airflow
Setting ........................................... 292
AIRMATIC ........................................... 336
AIRMATIC (display message) ............ 402
Air nozzles see Air vents .................................. 295
Air pressure
see Tire pressure
Air-recirculation mode
Activating/deactivating .................293
Air vents ............................................. 295
Glove box ....................................... 295
Important safety information .........294
Rear ............................................... 295
Setting the center air vents ...........295
Setting the side air vents ...............295
Alarm system
see ATA 4Index

CD/DVDEjecting (Rear Seat Entertainment
System) ......................................... 248
Inserting (Rear Seat
Entertainment System) ..................247
CD player/CD changer
Operation (COMAND) ....................217
Center console ..................................... 35
Central locking Activating/deactivating
(COMAND) ..................................... 261
SmartKey ......................................... 76
Changing bulbs
Headlamps ..................................... 278
Changing direction
Announcement phase ....................164
Change of direction phase .............165
Preparation phase .........................164
Changing gears .................................. 309
Changing the programming SmartKey ......................................... 79
Channel presets ................................ 209
Character entry ................................. 127
Characters Entering ................................. 128, 130
Child-proof locks
Rear doors ....................................... 65
Children
In the vehicle ................................... 60
Restraint systems ............................ 61
Child seat
LATCH-type (ISOFIX ) child seat
anchors ............................................ 63
Special seat belt retractor ...............62
Top Tether ....................................... 64
Cigarette lighter ................................ 431
City Entering ......................................... 152
Classification system for
occupants (OCS) Faults ............................................... 52
Operation ......................................... 48
System self-test ............................... 51
Climate control
Activating/deactivating .................288
Activating/deactivating air-
recirculation mode .........................293Automatic climate control .............287
COMAND ....................................... 261
Controlling automatically ...............289
Controlling centrally (COMAND) ....264
Cooling with air dehumidification ..289
Cooling with air dehumidification
(COMAND) ..................................... 263
Defrosting the windshield ..............292
Demisting the windows .................. 293
Important safety information .........286
Indicator lamp ................................ 289
Main menu ..................................... 263
Maximum cooling .......................... 292
Problems with "cooling with air
dehumidification" ........................... 289
Problems with the rear window
heating .......................................... 293
Rear compartment (COMAND) ......265
Rear control panel .........................288
Refrigerant ..................................... 514
Setting the air distribution .............291
Setting the airflow .........................292
Setting the airflow (COMAND) .......265
Setting the air vents ......................295
Setting the footwell temperature
(COMAND) ..................................... 264
Setting the temperature ................290
Setting the temperature (rear
compartment) ................................ 291
Switching the rear window
heating on/off ............................... 293
Switching the residual heat
function on/off .............................. 294
Coat hooks ......................................... 424
Cockpit ................................................. 31
COMAND Basic functions .............................. 131
Components .................................. 116
Function buttons ........................... 117
Switching on/off ........................... 131
COMAND controller ........................... 116
COMAND display ............................... 119
Cleaning instructions .....................123
Folding in and swiveling .................122
Setting ........................................... 141
COMAND menu
Automatic climate control .............261Index7

COMAND MenuVehicle ........................................... 257
COMAND operating system .............. 116
Combination switch .......................... 274
Conference connection ..................... 198
Consumption statistics (on-board
computer) .......................................... 368
Convenience closing feature .............. 91
Convenience opening feature ............ 90
Convenience telephone Importing contacts ........................200
Coolant (engine)
Checking the level .........................450
Display message ............................ 397
Notes ............................................. 515
Temperature gauge ........................ 365
Cooling
see Climate control
Copy protection (CD/DVD) ............... 225
Cornering light (display message) ... 394
Crosshair position Saving ............................................ 180
Cruise control
Cruise control lever .......................324
Display message ............................ 407
Function/notes ............................. 323
Cup holder ......................................... 427
Center console .............................. 427
Rear compartment .........................428
Current fuel consumption (on-
board computer) ............................... 368
Customer Assistance Center (CAC) ............................................... 27
Customer Relations Department ....... 27
D
Dashboard see Cockpit
Data carrier
MUSIC REGISTER ........................... 226
Data medium
Audio DVD ..................................... 224
CD/DVD ........................................ 225
MP3 ............................................... 224
Date format
Setting ........................................... 142
Daytime running lamps
Display message ............................ 396
Switching on/off (on-board
computer) ...................................... 377
Delayed switch-off
Exterior lighting (COMAND) ...........259
Interior lighting (COMAND) ............259
Destination
Adopting from the list of previous
destinations ................................... 176
Destination entry
Point of interest ............................. 160
Destination information ................... 169
Destination input .............................. 151
Address ......................................... 151
Destination memory ......................156
Intermediate stop .......................... 158
Last destination ............................. 157
Map ............................................... 157
Destination memory ......................... 175
Deleting an entry ........................... 178
My address .................................... 175
Storing a destination .....................176
Digital speedometer ......................... 368
DIRECT SELECT lever see Automatic transmission
Display (cleaning instructions) ........ 457
Display messages Brakes ........................................... 388
Calling up (on-board computer) .....380
Clearing (on-board computer) ........380
Driving systems ............................. 401
Engine ............................................ 397
KEYLESS-GO .................................. 411
Lamps ............................................ 394
Safety systems .............................. 381
Service interval display ..................451
SmartKey ....................................... 411
Tires ............................................... 407
Vehicle ........................................... 409
Distance
see Route overview
Distance recorder ............................. 368
Distance warning lamp ..................... 419
DISTRONIC PLUS ............................... 325
Deactivating ................................... 333
Display message ............................ 4068Index

Setting the airflow
You can set the airflow separately for the
driver’s side and for the 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
Using COMAND, you can set additional
functions that cannot be called up 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.
Climate control main menu
You can:
Rswitch cooling with dehumidification on/
off (Æ)
Rcontrol climate control centrally (Mono)
Radjust the Footwell temperature
Rset the Airflow for the air vents
Roperate the Rear air conditioning from the
front
Rset the Auxiliary heating,
departure time
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
misting up.
GRisk of accident
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.
iCondensation 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 turning
Vehicle263COMANDZ

Adjusting 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:
RFocused (high blower setting)
RMedium (standard setting)
RDiffuse (low blower setting)
iThis setting is quite effective in automatic
mode, especially at high outside
temperatures.
If the vehicle has become very warm and the
automatic climate control 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
climate control for the driver and front
passenger.
Switching on operation of the rear-
compartment air conditioning from the
front
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 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:
Rswitch back to front-compartment climate
control operation
Rswitch off the rear-compartment air
conditioning
Rswitch 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.
Vehicle265COMANDZ

Vehicle equipment
i This manual describes all the standard
and optional equipment of your vehicle
which was available at the time of
purchase. Country-specific differences are
possible. Bear in mind that your vehicle
may not feature all functions described
here. This also refers to safety-related
systems and functions.
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 clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center.
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.
Automatic climate control regulates the
temperature and the humidity in the vehicle
interior and filters undesirable substances
from the air.
Automatic climate control is only operational
when the engine is running 19
. Optimum
operation is only achieved when you drive
with the side windows and tilt/sliding
sunroof/panorama roof with power tilt/
sliding panel closed.
Some functions of automatic climate control
can also be set via COMAND ( Y page 261).
i
Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 90).
This will speed up the cooling process and
the desired vehicle interior temperature
will be reached more quickly.
i The integrated filter can remove most
particles of dust and removes pollen
completely. 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 interior 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.19 The "residual heat" function can only be switched on/off if the ignition is switched off.286Overview of climate control systemsClimate control

Activating/deactivating the rear-
compartment climate control using the
front control panelXTurn the key to position 2 in the ignition
lock.XActivate the Y rear compartment
function via COMAND ( Y page 265).
The rear-compartment climate control can
be controlled via the front control panel
using the Y rear compartment function.XTo switch on: 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 switch off: press the ^ rocker
switch up or down.
The indicator lamp in the rocker switch
lights up.
Activating/deactivating the rear-
compartment climate control using the
rear control panel
XTurn the key to position 2 in the ignition
lock.XTo activate: press rocker switch
K (Y page 287) up or down and select
AUTO .
or
XPress rocker switch K (Y page 287) up or
down and select MAN.XTo deactivate: press rocker switch
K (Y page 287) up or down and select
OFF .
Activating/deactivating cooling with
air dehumidification
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 the automatic climate
control 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 263).
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.
Operating the climate control systems289Climate controlZ

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 key 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.
XTo switch off: 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 262).
The indicator lamp in the à rocker
switch goes out.
Controlling the rear-compartment
climate control automatically using the
front control panel
XTurn the key to position 2 in the ignition
lock.
XActivate the Y rear compartment
function via COMAND (Y page 265).
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 the à rocker
switch up or down.
The indicator lamp in the à rocker
switch lights up.
XTo switch off: 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 262).
The indicator lamp in the à rocker
switch goes out.
iTo return to the standard display, activate
the "front climate control" function via
COMAND (Y page 265).
iThe rear display changes to the standard
display automatically after five seconds.
Controlling the rear-compartment
climate control automatically using the
rear control panel
XTurn the key 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 287).
XTo deactivate: press rocker switch K up
or down and select MAN or
OFF (Y page 287).
Setting the temperature
Climate control climate zones
You can select different temperature settings
for the driver's and front-passenger sides as
290Operating the climate control systemsClimate control

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 263).
XTurn the key to position 2 in the ignition
lock.XTo increase/reduce: press the K
rocker switch up or down.
Setting the rear-compartment airflow
using the front control panel
XTurn the key to position 2 in the ignition
lock.XActivate the Y rear compartment
function via COMAND ( Y page 265).
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 key to position 2 in the ignition
lock.XTo increase/reduce: press rocker switch
J up or down ( Y page 287).
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 20
R high temperature 20
R air distribution to the windshield and
front side windows
R air-recirculation mode offXTo switch off: 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.
Maximum cooling MAX COOL
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.
20
Depending on the outside temperature.292Operating the climate control systemsClimate control

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 263).XActivate automatic mode Ã.XIf the windows continue to fog up, activate
the defrosting function ( Y page 292).
i
You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
XActivate the windshield wipers.XActivate automatic climate control.
i You should only select this setting until
the windshield is clear again.
Rear window defroster
Activating/deactivating
GWarning
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others.
The rear window heating has a high current
draw. You should therefore switch it off as
soon as the window is clear as it only switches
off automatically after several minutes.
If the battery voltage is too low, the rear
window heating may switch off.
XTurn the SmartKey to position 2 in the
ignition lock.XPress the ¤ rocker switch up or down.
The indicator lamp in the ¤ rocker
switch lights up or goes out.Problems with the rear window heating
The rear window heating has deactivated
itself prematurely or cannot be activated.
XSwitch off any consumers that are not
required, e.g. reading lamps or interior
lighting.
When the battery is sufficiently charged,
the rear window heating is activated again
automatically.
Activating/deactivating air-
recirculation mode
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the
vehicle will then be recirculated.
GWarning
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press the ¬
button.
XTurn the SmartKey to position 2 in the
ignition lock.XTo activate: press the g rocker switch
up or down.
The indicator lamp in the g rocker
switch lights up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. The indicator lamp in the
g rocker switch is not lit when
automatic air-recirculation mode is
activated.
Outside air is added after about 30
minutes.
Operating the climate control systems293Climate controlZ