
1, 2, 3 ...
12 V socket ........................................ 258
A
ABS (Anti-lock Braking System) Display message ............................ 220
Function/notes ................................ 64
Warning lamp ................................. 243
Accident (notes) ................................ 287
Active light function (display
message) ............................................ 225
Active service system see Service interval display
ADAPTIVE BRAKE ................................. 68
Adaptive Highbeam Assist Display message ............................ 226
Switching on/off ........................... 123
Switching on/off (on-board
computer) ...................................... 209
Air bags
Display message ............................ 218
Front air bag (driver, front
passenger) ....................................... 37
Important safety notes ....................36
Knee bag .......................................... 38
PASSENGER AIRBAG OFF
indicator lamp (only Canada) ...........47
PASSENGER AIRBAG OFF
indicator lamp (only USA) ................42
Pelvis air bag ................................... 40
Safety guidelines ............................. 35
Side impact air bag ..........................39
Window curtain air bag ....................41
AIRCAP ................................................. 97
AIRCAP (cleaning instructions) ........ 280
Air-conditioning system see Climate control
Air dehumidification
Activating/deactivating with
cooling ........................................... 139
Air distribution
Setting ........................................... 141
Airflow
Setting ........................................... 142
Air nozzles
see Air vents .................................. 145
Air pressure
see Tire pressure
Air-recirculation mode
Activating/deactivating .................144
AIRSCARF ........................................... 112
Setting the vents ........................... 147
Air vents ............................................. 145
Glove box ....................................... 146
Important safety information .........145
Rear ............................................... 146
Setting the AIRSCARF vents ..........147
Setting the center air vents ...........145
Setting the side air vents ...............146
Switching AIRSCARF on/off ..........112
Alarm system
see ATA
Alertness Assistant
see ATTENTION ASSIST
Anti-lock Braking System
see ABS
Anti-Theft Alarm system
see ATA
Anti-theft system
ATA (Anti-Theft Alarm system) .........71
Ashtray ............................................... 257
Assistance menu (on-board
computer) .......................................... 206
ATA (Anti-Theft Alarm system) Activating/deactivating ...................71
Function ........................................... 71
Switching off the alarm ....................71
ATTENTION ASSIST
Activating/deactivating (on-
board computer) ............................ 207
Display message ............................ 229
Function/notes ............................. 193
Audio menu (on-board computer) .... 204
AUTO lights see Light sensor
Automatic car wash .......................... 277
Automatic transmission Display message ............................ 236
Driving tips .................................... 158
Emergency running mode ..............162
Kickdown ....................................... 158
Malfunction .................................... 162
Program selector button ................1584IndexBA 207 USA, CA Edition B 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.62010-05-20T10:38:09+02:00 - Seite 4

CD player/CD changer (on-board
computer) .......................................... 205
Center console ..................................... 29
Central locking Automatic locking (on-board
computer) ...................................... 210
SmartKey ......................................... 74
Changing bulbs
Headlamps ..................................... 126
Changing gears .................................. 158
Changing the programming SmartKey ......................................... 77
Children
In the vehicle ................................... 58
Restraint systems ............................ 59
Child seat
Automatic recognition .....................47
Automatic recognition/air bag
deactivation, self-test ......................49
Display message ............................ 215
LATCH-type (ISOFIX ) child seat
anchors ............................................ 61
Special seat belt retractor ...............61
Top Tether ....................................... 62
Troubleshooting ............................... 50
Cigarette lighter ................................ 258
Classification system for
occupants (OCS) Faults ............................................... 46
Operation ......................................... 42
System self-test ............................... 45
Climate control
3-zone automatic climate control ..137
Activating/deactivating .................139
Activating/deactivating air-
recirculation mode .........................144
Controlling automatically ...............140
Cooling with air dehumidification ..139
Defrosting the windshield ..............142
Demisting the windows .................. 143
Dual-zone automatic climate
control ........................................... 135
Important safety information .........134
Indicator lamp ................................ 140
Maximum cooling .......................... 143
Problems with "cooling with air
dehumidification" ........................... 140Problems with the rear window
heating .......................................... 144
Rear control panel .........................139
Refrigerant ..................................... 337
Setting the air distribution .............141
Setting the airflow .........................142
Setting the air vents ......................145
Setting the temperature ................141
Setting the temperature (rear
compartment) ................................ 141
Switching the rear window
heating on/off ............................... 144
Switching the residual heat
function on/off .............................. 144
Switching the ZONE function on/
off .................................................. 142
Cockpit ................................................. 25
Combination switch .......................... 122
Compass ............................................ 268
Consumption statistics (on-board
computer) .......................................... 202
Convenience closing feature .............. 87
Convenience opening feature ............ 87
Coolant (engine) Checking the level .........................274
Display message ............................ 226
Notes ............................................. 338
Temperature gauge ........................ 198
Warning lamp ................................. 246
Cooling
see Climate control
Cornering light (display message) ... 223
Crash-responsive emergency
lighting ............................................... 126
Cruise control Cruise control lever .......................172
Display message ............................ 233
Function/notes ............................. 172
Cup holder ......................................... 255
Center console .............................. 255
Rear compartment .........................255
Current fuel consumption (on-
board computer) ............................... 202
Customer Assistance Center (CAC) ............................................... 21
Customer Relations Department ....... 216IndexBA 207 USA, CA Edition B 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.62010-05-20T10:38:09+02:00 - Seite 6

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.
Dual-zone automatic climate control/3-zone
automatic climate control controls the
temperature and the humidity of the vehicle
interior and filters out undesirable
substances from the air.
Dual-zone automatic climate control/3-zone
automatic climate control is only operational
when the engine is running 9
.
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the
convenience opening feature ( Y page 87).
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 "residual heat"
function may be activated automatically an
hour after the SmartKey is removed. The
vehicle is then ventilated for 30 minutes to
dry the air-conditioning system.9 3-zone automatic climate control: the "residual heat" function can only be switched on/off if the ignition is
switched off.134Overview of climate control systemsClimate control
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Control panel for the dual-zone automatic climate control
For Canada only
FunctioniNotes/tips:Activates/deactivates air-
recirculation mode
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.
;Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.
=Switches the ZONE function
on/off
Use the ZONE function to adopt the temperature
settings on the driver's side for the front-passenger
side as well. The indicator lamp above the á
button goes out.
?DisplayASets climate control to
automatic
Activate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up.
BSwitches cooling with air
dehumidification on/off
Activate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up.
CSwitches the rear window
heating on/off
DSwitches climate control on/
off
ESets the temperature, rightSet the temperature to 72 ‡ (22 †).FSets the air distributionOverview of climate control systems135Climate controlBA 207 USA, CA Edition B 2011; 1; 3, en-USd2sboikeVersion: 3.0.3.62010-05-20T10:38:09+02:00 - Seite 135Z

FunctioniNotes/tipsGSets the airflowHSets the temperature, leftSet the temperature to 72 ‡ (22 †).
For USA only
FunctioniNotes/tips:Sets climate control to
automaticActivate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up.;Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.=Switches the ZONE function
on/offUse the ZONE function to adopt the temperature
settings on the driver's side for the front-passenger
side as well. The indicator lamp above the á
button goes out.?Activates/deactivates air-
recirculation modeOnly 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.ASwitches maximum cooling
MAX COOL on/offBSwitches cooling with air
dehumidification on/offActivate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up.CSwitches the rear window
heating on/off136Overview of climate control systemsClimate control
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FunctioniNotes/tips;Defrosting the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.=Switches the ZONE function
on/offUse the ZONE function to adopt the temperature
settings on the driver's side for the front-passenger
side and the rear compartment as well. The indicator
lamp above the á button goes out.?DisplayAActivates/deactivates air-
recirculation modeOnly 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.BSwitches the residual heat
function on/offUse 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.CSwitches cooling with air
dehumidification on/offActivate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up. You can also set the airflow
and air distribution of the automatic climate control
to one of three levels (FOCUS/MEDIUM/DIFFUSE).
You can set the desired level using button G. The
MEDIUM level is recommended.DSwitches the rear window
defroster on/offESwitches climate control on/
offActivate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up. You can also set the airflow
and air distribution of the automatic climate control
to one of three levels (FOCUS/MEDIUM/DIFFUSE).
You can set the desired level using button G. The
MEDIUM level is recommended.FSets the temperature, rightSet the temperature to 72 ‡ (22 †).138Overview of climate control systemsClimate control
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FunctioniNotes/tipsGSets climate control to
automatic (FOCUS/MEDIUM/
DIFFUSE)Activate climate control using the à and ¿
buttons. The indicator lamps above the à and
¿ buttons light up. You can also set the airflow
and air distribution of the automatic climate control
to one of three levels (FOCUS/MEDIUM/DIFFUSE).
You can set the desired level using button G. The
MEDIUM level is recommended.HSets the airflowISets the air distributionJSets the temperature, leftSet the temperature to 72 ‡ (22 †).Rear control panelKIncreases the temperatureSet the temperature to 72 ‡ (22 †).LDisplayMReduces the temperatureSet the temperature to 72 ‡ (22 †).Operating the control systems
Switching the control on/off
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 Activate climate control primarily using
the à button ( Y page 140).
Activating/deactivatingXTurn the key to position 2 in the ignition
lock.XTo activate: press the à button.
The indicator lamp above the à button
lights up. Airflow and air distribution are set
to automatic mode.
or
XPress the ^ button.
The indicator lamp above the ^ button
goes out. The previously selected settings
come into effect again.XTo deactivate: press the ^ button.
The indicator lamp above the ^ button
lights up.
Switching cooling with air
dehumidification on/off
Important information
The cooling with air dehumidification function
is only available when the engine is running.
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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 automatic climate control is
in cooling mode. This is normal and not a sign
that there is a malfunction.
i The cooling with air dehumidification
function uses refrigerant R134a. This
coolant does not contain
chlorofluorocarbons, and therefore does
not damage the ozone layer.
Activating/deactivating
XTo switch on: press the ¿ button.
The indicator lamp above the ¿ button
lights up.XTo switch off: press the ¿ button.
The indicator lamp above the ¿ button
goes out. The cooling with air
dehumidification function has a delayed
switch-off feature.
Problems with the "cooling with air
dehumidification" function
If the indicator lamp in the ¿ button does
not go out when switched off, the cooling with
air dehumidification function is switched off
due to a malfunction. You can no longer
activate the cooling with air dehumidification
function.
XConsult a qualified specialist workshop.Setting climate control to automaticGWarning
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.
XTurn the SmartKey to position 2 in the
ignition lock.XSet the desired temperature.XTo activate: press the à button.
The indicator lamp above the à button
lights up. Automatic air distribution and
airflow are activated.X3-zone automatic climate control: press
switch G up or down and select the
desired level ( Y page 137).FOCUSAir flow high/air distribution via
the center and side ventsMEDIUMAir flow medium/air distribution
via the center and side ventsDIFFUSEAir flow low/air distribution via the
center, side and defroster vents
i This setting is especially effective in
automatic mode when outside
temperatures are high.
XTo deactivate: press the air distribution
button.
Dual-zone automatic climate control: press
button F (Y page 135).140Operating the control systemsClimate control
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