Page 257 of 761

256 Control systems
COMAND automatic climate control
Selecting “Footwell Temperature”:
Slide qmr or rotate ymz and then
pressn.
Changing temperature difference:
Slide qmr or rotate ymz.
Exiting menu: Press n, back
buttonL in the center console
(
page 86) or slideomp.
The setting is saved.Adjusting air flow from air vents
The “Airflow” setting defines air distribu-
tion and air volume in automatic mode:
“Focused” (default setting, increased
air flow)
“Medium” (reduced air flow)
“Diffuse” (minimal air flow)
Select climate control settings Cen-
tral climate control menu “Airflow”.
A selection list appears.
The current setting is indicated by a
dotR.
Changing air flow: Slide qmr or
rotateymz.
Confirming selection: Press n.
iIn automatic mode, this setting optimizes
the air flow when outside temperatures are high.
iWhen the interior ambient temperature of
the vehicle is very hot and the automatic climate
control is cooling the interior, the setting for air
flow is temporarily overridden.
Page 258 of 761

257 Control systems
COMAND automatic climate control
Operating rear climate control* from
the front
The “Rear)” function is used to oper-
ate the rear climate control via COMAND
and the buttons on the center console con-
trol unit (
page 477).
Switching on rear climate control oper-
ation from the front
Select climate control settings Cen-
tral climate control menu.
Selecting “Rear)”: Slide qmr or
rotate ymz.
Confirming selection: Press n.In the climate control settings, “)”
appears in the central menu. The rear
climate control can be operated from
the front.
Climate control settings, rear climate
control
1Rear temperature, left
2Rear air distribution, left
3Rear air volume
4Central menu for rear climate control
5Rear air distribution, right
6Rear temperature, right
The rear climate control is operated in the
same manner as the climate control sys-
tem for the driver’s and front passenger’s
side (
page 251).Central menu for rear climate control
In the central menu for the rear climate
control, you can:
switch back to operating the front cli-
mate control system
switch off the rear climate control
switch the automatic function of the
rear climate control from automatic to
manual
Select climate control settings Cen-
tral climate control menu.
Page 289 of 761

288 Control systems
Voice Control* introduction
Setting volume level
Activate Voice Control.
Speak a command, for example “Help”.
Pressæ orç. The volume is in-
creased or decreased during voice out-
put.
or
Set volume for voice output using the
COMAND volume thumbwheel on the
lower part of the front center console
(
page 96).
Displays
COMAND Display
In addition to the acoustic help function,
a visual help function (
page 237) is avail-
able on the COMAND display.
Upon activating the Voice Control, the
most important available commands for
the currently active system appear on the
COMAND display.When the Voice Control System requires
additional information from the user, a se-
lection list is shown on the COMAND dis-
play in the address book and navigation
system.
1COMAND display
Multifunction display
For example: telephone numbers are
shown on the multifunction display while
dialing when the main “Telephone” menu
is selected in the instrument cluster con-
trol system.1Multifunction display
Symbols
The following symbols are found in follow-
ing Voice Control System pages:
sThis symbol stands for commands
and voice entries you are speaking.
tThis symbol stands for voice output
by the system.
uThis symbol indicates that informa-
tion is available on the COMAND
display.
Page 355 of 761

354 Controls in detail
Seats
Luxury head restraint* adjusting
1Head restraint side cushions
2Adjusting head restraint forward and
backward
You can individually adjust side
cushions1 of the luxury head restraints.Adjusting side cushions: Pull or push
side cushions1 into desired position.
Adjusting forward or backward: Pull
or push head restraint in direction of
arrow2.
Rear head restraintsFolding head restraints back
The rear seat head restraints and the rear
seat power head restraints* can be folded
backward for increased visibility.
1Switch in the front center console
Switch on the ignition (page 344).
Press switch1 in the front center con-
sole briefly.
The rear head restraints will fold back-
ward.
Warning!G
When folding back the side cushions, never
reach between the side cushion and the
mounting post. You could otherwise be
trapped.
Warning!G
For safety reasons, always drive with the
rear head restraints in the upright position
when the rear seats are occupied.
Otherwise, the back of the head will not be
supported in the event of a collision. As a re-
sult, rear seat occupants could be injured.
Warning!G
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
Page 356 of 761

355 Controls in detail
Seats
Placing head restraints upright
Pull the rear head restraint upright until
it locks into position.Placing power head restraints* upright
(rear outer seats)
Switch on the ignition (page 344).
Press and hold switch1 in the front
center console (
page 354).
The rear outer seats head restraints
will place upright.
Pull the rear center seat head restraint
upright manually until it locks into posi-
tion.Rear power head restraints*
(rear outer seats)
1Placing upright head restraint
2Head restraint tilt
3Folding down head restraint
4Head restraint tilt
Switch on the ignition (page 344) or
open the respective door.
Press switch up in the direction of
arrow1.
The rear outer seats power head re-
straint will place upright.
!Make sure the head restraints engage when
placing them upright manually. Otherwise their
protective function cannot be ensured.
iWhen you fasten your seat belt in the rear,
the respective rear outer seat head restraint
places upright automatically.
Page 381 of 761
380 Controls in detail
Lighting
Courtesy lighting
For better orientation the inside door han-
dles (depending on vehicle production
date), the driver and passenger footwells
and the center console are illuminated in
the dark.Trunk lamp
The trunk lamp switches on if the trunk is
opened.
If the trunk remains open, the trunk light-
ing switches off automatically after ap-
proximately 10 minutes.
Page 469 of 761

468 Controls in detail
Air vents
Opening and closing air vents
Center air vents
Opening: Turn thumbwheels 4
and5 upward (
page 466).
Closing: Turn thumbwheels 4 and 5
downward.
Side air vents
Opening: Turn thumbwheels next to
side air vents2 and8 upward
(
page 466).
Closing: Turn thumbwheels down-
ward.
Rear center console air vents
Increasing/decreasing air volume:
Turn thumbwheelsa or d to the left
or right (
page 466).
Ventilated storage compartment
In vehicles without rear passenger com-
partment climate control*: the storage
compartment under the front armrest can
be ventilated when the automatic climate
control is switched on.1Switching ventilation off
2Switching ventilation on
The air volume is dependent on the setting
of:
air distribution control
air volume control
air vents in the dashboard
The air temperature is about the same as
that of the dashboard air vents. It cannot
be regulated separately.
iFor draft-free ventilation, move the sliders
for the center air vents 3 and 6 (
page 466)
to the middle position.
iVehicles without rear passenger compart-
ment climate control*:
The temperature at the air ventsb andc
(
page 466) for rear passenger compartment
will be approximately the same as at the dash-
board center air vents.
!Extreme temperatures can occur in the stor-
age compartment. Switch off the air vents in the
storage compartment while the heating is
switched on if you are transporting heat-sensi-
tive items in the compartment.
Keep the air vents free of obstruction.
Page 473 of 761

472 Controls in detail
Automatic climate control
Setting temperature
Use temperature controls %$
2anda (
page 469) in the center con-
sole or COMAND (
page 252) to sepa-
rately adjust the air temperature on each
side of the passenger compartment. You
should raise or lower the temperature set-
ting in small increments, preferably start-
ing at 72°F (22°C). The automatic climate
control will adjust to the set temperature
as fast as possible.
Press temperature control %$
2and/ora (
page 469) upward or
downward.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Adjusting air volume
Use buttonsQ (
page 469) in the cen-
ter console or COMAND to separately ad-
just the air volume on each side of the
passenger compartment.
Press buttonQ up to increase or
down to decrease air volume.
The indicator lamps on buttonsU
(
page 469) goes out.
The automatic function is switched off.
The air volume is adjusted correspond-
ing to the set blower speed.
Front defroster
You can use this setting to defrost the
windshield, for example if it is iced up. You
can also defog the windshield and the door
windows.Activating
Press button; (page 469) up or
down.
The indicator lamp on the button
comes on.
The air conditioning switches to the follow-
ing functions automatically:
most efficient blower speed and heat-
ing power, depending on outside tem-
perature
air flows onto the windshield and the
front door windows
the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
the air recirculation mode is switched
off
iKeep this setting selected only until the
windshield is clear again.