2011 MERCEDES-BENZ M-Class recirculation

1, 2, 3 ...
115 V socket ...................................... 269
12 V socket ........................................ 268
4ETS see ETS/4ETS
4MATIC (permanent four-wheel
drive) .................................................. 191
A
ABS (Anti-lock Braking System) Display message ............................ 228
Function/notes ................................ 65
Warning lamp ................................. 249
Accident (notes) ................................ 297
Active light function (display
message) ............................................ 233
Active service system see Service interval display
Adaptive Damping System (ADS) ..... 184
AdBlue ®
Adding ........................................... 156
Display message ............................ 236
Additional functions (on-board
computer) .......................................... 219
ADS (Adaptive Damping System) ..... 184
Air bags Display message ............................ 225
Front air bag (driver, front
passenger) ....................................... 39
Important safety information ...........38
PASSENGER AIRBAG OFF
indicator lamp (only Canada) ...........48
PASSENGER AIRBAG OFF
indicator lamp (only USA) ................42
Safety guidelines ............................. 37
Side impact air bag ..........................40
Window curtain air bag ....................41
Air-conditioning system
see Climate control
Air dehumidification
Activating/deactivating with
cooling ........................................... 129
Air distribution
Setting ........................................... 132
Air filter (display message) .............. 236
Airflow
Setting ........................................... 132
AIRMATIC package ............................ 183
Air nozzles see Air vents .................................. 135
Air pressure
see Tire pressure
Air-recirculation mode
Activating/deactivating .................133
Air vents ............................................. 135
Important safety information .........134
Rear ............................................... 135
Setting the center air vents ...........135
Setting the side air vents ...............135
Alarm system
see ATA
Ambient lighting (on-board
computer) .......................................... 216
AMG menu (on-board computer) ..... 209
Anti-lock Braking System see ABS
Anti-Theft Alarm system
see ATA
Anti-theft system
ATA (Anti-Theft Alarm system) .........69
Approach/departure angle .............. 170
Ashtray ............................................... 267
ATA (Anti-Theft Alarm system) Activating/deactivating ...................69
Function ........................................... 69
Switching off the alarm ....................69
Audio menu (on-board computer) .... 211
AUTO lights see Light sensor
Automatic car wash .......................... 288
Automatic transmission DIRECT SELECT lever .....................144
Display message ............................ 243
Driving tips .................................... 147
Emergency running mode ..............151
Kickdown ....................................... 147
Malfunction .................................... 151
Program selector button ................147
Pulling away ................................... 141
Starting .......................................... 141
Trailer towing ................................. 1474IndexBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 4

Cargo tie down rings ......................... 260
CD player/CD changer (on-board
computer) .......................................... 212
Center console ..................................... 31
Central locking Automatic locking (on-board
computer) ...................................... 217
SmartKey ......................................... 72
Changing bulbs
Headlamps ..................................... 111
Changing gears .................................. 146
Changing the programming SmartKey ......................................... 75
Checklist
After driving off-road ...................... 168
Before driving off-road ...................167
Child-proof locks
Rear doors ....................................... 63
Special seat belt retractor ...............61
Children
In the vehicle ................................... 58
Restraint systems ............................ 59
Child seat
Automatic recognition .....................48
Automatic recognition/air bag
deactivation, self-test ......................50
ISOFIX (LATCH-type child seat
anchors) ........................................... 61
Special seat belt retractor ...............61
Top Tether ....................................... 62
Troubleshooting ............................... 51
Cigarette lighter ................................ 267
Climate control Activating/deactivating .................128
Activating/deactivating air-
recirculation mode .........................133
Controlling automatically ...............130
Cooling with air dehumidification ..129
Defrosting the windshield ..............132
Demisting the windows .................. 133
Dual-zone automatic climate
control ........................................... 123
Important safety information .........122
Indicator lamp ................................ 130
Multi-zone automatic climate
control ........................................... 124
Problems with "cooling with air
dehumidification" ........................... 130Problems with the rear window
heating .......................................... 133
Rear control panel .................125, 128
Refrigerant ..................................... 362
Setting the air distribution .............132
Setting the airflow .........................132
Setting the air vents ......................135
Setting the temperature ................131
Setting the temperature (rear
compartment) ................................ 131
Switching the MONO function on/
off .................................................. 132
Switching the rear window
heating on/off ............................... 133
Switching the residual heat
function on/off .............................. 134
Clock (on-board computer) ............... 215
Cockpit ................................................. 27
Collapsible spare wheel Inflating ......................................... 309
see Emergency spare wheel
Combination switch .......................... 109
Compass ............................................ 279
Calling up ....................................... 279
Consumption statistics (on-board
computer) .......................................... 219
Convenience closing feature .............. 86
Convenience opening feature ............ 86
Coolant (engine) Checking the level .........................285
Display message ............................ 233
Notes ............................................. 362
Temperature gauge ........................ 208
Cooling
see Climate control
Cornering light (display message) ... 230
Crash-responsive emergency
lighting ............................................... 111
Cruise control .................................... 171
Cruise control lever .......................172
Display message ............................ 239
Cup holder ......................................... 265
Center console .............................. 265
Rear compartment .........................266
Current fuel consumption (on-
board computer) ............................... 2206IndexBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 6

FunctioniNotes/tipsISwitches the rear window
heating on/offJActivates/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.KInterior temperature sensorLSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.
Control panel for the multi-zone automatic climate control
For USA only
Functioni Notes/tipsFront control panel:Sets the temperature, leftSet the temperature to 72 ‡ (22 †).;Sets climate control to
automaticActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.124Overview of climate control systemsClimate control
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FunctioniNotes/tips=Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.?Increases the airflowADirects the airflow through the
defroster ventsBSwitches cooling with air
dehumidification on/offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Switches 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.CSets the temperature, rightSet the temperature to 72 ‡ (22 †).DSwitches rear-compartment
climate control on/offEDirects the airflow through the
center and side air ventsFDirects the airflow to the
footwells and side air ventsGDisplays the airflow levelHReduces the airflowISwitches the rear window
heating on/offJActivates/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.KInterior temperature sensorLSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Rear control panelMIncreases the airflowOverview of climate control systems125Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 125Z

FunctioniNotes/tips?Defrosts the windshieldOnly use the "defrosting" function briefly until the
windshield is clear again.AIncreases the airflowBSwitches the rear window
heating on/offCDirects the airflow through the
defroster vents, rightDOperates the rear-
compartment climate control
via the front control panelESets the temperature, rightSet the temperature to 72 ‡ (22 †).FSwitches climate control on/
offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.GDirects the airflow to the
footwells and side air vents,
rightHDirects the airflow through the
center and side air vents, rightISwitches cooling with air
dehumidification on/offActivate climate control using the à and Á
buttons. The indicator lamps in the à and Á
buttons light up.Switches 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.JDisplayKReduces the airflowLActivates/deactivates air-
recirculation modeMDirects the airflow through the
center and side air vents, leftNDirects the airflow to the
footwells and side air vents,
leftOverview of climate control systems127Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 127Z

Setting the air distribution
Multi-zone automatic climate control: you can
set the air distribution individually for the
driver's and front-passenger sides. 19
Front control unit:Zdirects the airflow through the
defroster ventsMdirects the airflow through the
defroster vents¯directs the airflow through the
defroster ventscdirects the airflow through the footwell
and side air ventsOdirects the airflow through the footwell
and side air vents\directs the airflow through the center
and side air ventsPdirects the airflow through the center
and side air vents
Rear control panel:
Mdirects the airflow through the rear-
compartment air ventsOdirects the airflow through the footwell
air ventsXTurn the key to position 2 in the ignition
lock.XPress the Z, M , ¯ , c , O ,
\ or P button.
Setting the airflow
XTurn the SmartKey to position 2 in the
ignition lock.XTo increase/reduce: press the K or
I button.
Vehicles with Voice Control System: when
voice control is started, the airflow is
restricted to 50%. After voice control is
finished, the airflow is adjusted back to the
previous setting.
Switching the MONO function on/off
Only multi-zone automatic climate control
features the "MONO" function. 20
You can use the MONO function to adopt the
settings configured for temperature, air
distribution and airflow on the driver's side for
the front-passenger side and the rear
compartment.
XPress the º button.
The indicator lamp in the º button lights
up or goes out.
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 activate: press the ¦ button.
The indicator lamp in the ¦ button lights
up.
The climate control system switches to the
following functions:
R cooling with air dehumidification on
R high airflow 21
R high temperature 21
R air distribution to the windshield and
front side windows
R air-recirculation mode offXTo deactivate: press the ¦ button.
The indicator lamp in the ¦ button goes
out. The previously selected settings come
into effect again. The cooling with air19 Canada only.
20 Canada only.
21 Depending on the outside temperature.132Operating the control systemsClimate control
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dehumidification function remains on. Air-
recirculation mode remains deactivated.
or
XPress the ^ button.
or
XPress the à button.
or
XTurn the temperature control clockwise or
counter-clockwise.
or
XPress the K or I button.
Defrosting the windows
Windows fogged up on the inside
XActivate the "cooling with air
dehumidification" function Á.XActivate automatic mode Ã.XIf the windows continue to fog up, activate
the defrosting function ( Y page 132).
i
You should only select this setting until
the windshield is clear again.
Windows fogged up on the outside
XSwitch on the windshield wipers.XPress the P/\ 22
or O /c 22
air distribution button.
i You should only select this setting until
the windshield is clear again.
Rear window heating
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 ª button.
The indicator lamp in the ª button lights
up or goes out.
Problems with the rear window heating
If the indicator lamp in the ª rear window
heating button flashes, the on-board voltage
is too low or the roof is open. 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.
The operation of the air-recirculation mode is
the same for all control panels.
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.
22 Canada only.Operating the control systems133Climate controlBA 164.1 USA, CA Edition B 2011; 1; 2, en-USd2mskotVersion: 3.0.3.52010-04-21T17:25:06+02:00 - Seite 133Z

XTurn the SmartKey to position 2 in the
ignition lock.XTo activate: press the d button.
The indicator lamp in the d button lights
up.
i Air-recirculation mode is activated
automatically at high outside
temperatures. When air-recirculation mode
is activated automatically, the indicator
lamp in the d button is not lit.
Outside air is added after about 30
minutes.
XTo deactivate: press the d button.
The indicator lamp in the d button goes
out.
i Air-recirculation mode switches off
automatically:
R after approximately five minutes if
outside temperatures are under about
41 ‡ (5 †)
R after approximately five minutes if
cooling with air dehumidification is
deactivated
R after approximately 30 minutes if outside
temperatures are over about
41 ‡ (5 †)
i The air-recirculation mode does not
switch off automatically if outside
temperatures exceed 79 ‡ (26 †). After
about 30 minutes, outside air will be
added. 23
Switching the residual heat on/off
It is possible to make use of the residual heat
of the engine to continue heating the
stationary vehicle for up to 30 minutes after
the engine has been switched off. The heating
time depends on the temperature that has
been set.
i The blower will run at a low speed
regardless of the airflow setting.
i If you activate the "residual heat" function
at high temperatures, only the ventilation
will be activated. The blower runs at
medium speed.XTurn the SmartKey to position 0 in the
ignition lock or remove it.XTo switch on: press the Á button.
The indicator lamp in the Á button lights
up.XTo switch off: press the Á button.
The indicator lamp in the Á button goes
out.
i Residual heat is deactivated
automatically:
R after about 30 minutes
R when the ignition is switched on
R if the battery voltage drops
R if the coolant temperature is too low
Setting the air vents
Important safety guidelines
GWarning
When operating the climate control, the air
that enters the passenger compartment
through the air vents can be very hot or very
cold (depending on the set temperature). This
could cause burns or frostbite to unprotected
skin in the immediate area of the air vents.
Always keep sufficient distance between
unprotected parts of the body and the air
vents. If necessary, use the air distribution
adjustment to direct the air to air vents in the
vehicle interior that are not in the immediate
area of unprotected skin.
23 Vehicles with multi-zone automatic climate control.134Setting the air ventsClimate control
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