2010 MERCEDES-BENZ R320 Owner's Manual

Deactivating the climate control
system
G
Warning!
When the climate control system is switched
off, the outside air supply and circulation are
also
switched off. Only choose this setting for
a short time. Otherwise the windows could fog
up, impairing visibility and endangering you
and others.
Deactivating the front climate control X
Deactivating: Press button ^.
The
indicator lamp in the button comes on.
Canada only: Display J (Y page 172) is
cleared.
X Reactivating: Press button Ã.
i You can also press button ^ on the
climate control panel.
If you press button ¦ to reactivate the
climate control system, the defrosting
mode is activated.
Deactivating the rear climate control
from the front USA only
X
Deactivating: Press button ±.
The
indicator lamp in the button comes on.
X Reactivating: Press button ±.
The indicator lamp in the button goes out.
Canada only
X Deactivating: Press button X.
The
indicator lamp in the button comes on.
In display J (Y page 172), you will see the
Y symbol followed by MODE for
approximately 3 seconds.
X Within these 3 seconds press button
^.
In

display J, you will see the Y symbol
followed by OFF.
The rear climate control is switched off.
X Reactivating: Press button X. The indicator lamp in the button comes on.
In

display J, you will see the Y symbol
followed by ON and MODE. The MODE display
is cleared and the indicator lamp in button
X goes out after approximately
3 seconds.
The rear climate control switches on.
Deactivating the rear climate control
from the rear X
Deactivating: Press button ^.
The
indicator lamp in the button comes on.
X Reactivating: Press button Ã.
The
indicator lamp in the button comes on. Air conditioning
The air conditioning is operational while the
engine

is running and cools the interior air to
the temperature set by the operator. In
addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging. G
Warning!
If you switch off the air conditioning, 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.
i Condensation may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction.
Deactivating It is possible to deactivate the cooling
function of the climate control system. The
interior air will then no longer be cooled or
dehumidified.
X
Press button Á.
The indicator lamp in the button goes out.
The cooling function switches off after a
short delay. 3-zone automatic climate control
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Activating
Moist air can fog up the windows. You can
dehumidify the interior air with the air
conditioning.
X
Press button Á again.
The indicator lamp in the button comes on.
The air conditioning uses the refrigerant
R134a.
This refrigerant is free of CFCs which
are harmful to the ozone layer.
! If the air conditioning cannot be activated
again, this indicates that the air
conditioning is losing refrigerant. The
compressor has turned off.
Have the air conditioning checked at the
nearest authorized Mercedes-Benz Center. Automatic mode
You
can switch the climate control system on
and off for each zone of the passenger
compartment as desired.
When operating the climate control system in
automatic mode, the interior air temperature,
air volume and air distribution are adjusted
automatically.
In automatic mode, cooling with
dehumidification is switched on. This function
can be switched off if necessary. G
Warning!
If you switch off the air conditioning, 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.
X Set the desired temperature
(Y page 176).
X Activating: Press button Ã.
The
indicator lamp in the button comes on. i
The settings for the passenger side are
also used for the rear passenger
compartment.
X Deactivating:
Press button I or K.
The indicator lamp in button à goes out.
The automatic air volume is switched off
and is controlled according to the desired
setting. The automatic air distribution
remains switched on.
or
X Press an air distribution button Z 11
,
M 11
, \ 11
, P, ¯ 12
, c 11
or
O.
The

indicator lamp in button à goes out.
The automatic air distribution is switched
off and is controlled according to the
desired position. The automatic air volume
remains switched on.
Automatic mode with rear climate
control panel X
Activating: Press button Ã.
The
indicator lamp in the button comes on.
The temperature, air volume and air
distribution are adjusted automatically.
X Deactivating:
Press button I or K.
The automatic air volume is switched off
and is controlled according to the desired
setting. The automatic air distribution
remains switched on.
or
X Press button M or P.
The automatic air distribution is switched
off and is controlled according to the
desired

position. The automatic air volume
remains switched on. Setting the temperature
You can set the air temperature for each of
the 3 zones separately.You should raise or
lower the temperature setting in small
11 Canada only
12 USA only 176
3-zone automatic climate control
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increments, preferably starting at 72‡
(22†).
Front temperature with front climate
control panel
USA only
X
Increasing/decreasing: Turn
temperature control : and/or C
(Y page 170) slightly clockwise or
counterclockwise.
Canada only
X Increasing/decreasing: Turn
temperature control : and/or E
(Y page 172) slightly clockwise or
counterclockwise.
Rear temperature with front climate
control panel USA only
X
Press button ±.
X Increasing/decreasing: Turn
temperature control C (Y page 170)
slightly clockwise or counterclockwise.
Canada only
X Press button X.
In display J (Y page 172) you will see the
Y symbol.
X Increasing/decreasing: Turn
temperature control E (Y page 172)
slightly clockwise or counterclockwise. Rear temperature with rear climate
control panel X
Increasing/decreasing: Turn
temperature control ; (Y page 174)
slightly clockwise or counterclockwise. Adjusting air distribution
USA only The air distribution can be adjusted manually.
The symbols on the buttons represent the
following functions:
Symbol Function
¯
Directs air to the windshield and
side air vents
P
Directs air through the center
and side air vents
O
Directs air to the footwells and
side air vents
X
Press the desired air distribution button
¯, P, or O.
The automatic mode is switched off. The
indicator lamp in the desired button comes
on.
Canada only The air distribution can be adjusted
separately on each side of the passenger
compartment.
The symbols on the buttons represent the
following functions:3-zone automatic climate control
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Symbol
Driver’s
side Symbol
Passenger
side Function
Z M
Directs air to
the windshield
and side air
vents
\ P
Directs air
through the
center, side
and rear
passenger
compartment
air vents
c O
Directs air to
the footwells
and side air
vents
X
Press the desired air distribution button
Z, \, or c for the driver’s side,
or M, P, or O for the passenger
side.
The automatic mode is switched off. The
indicator
lamp in the desired button comes
on. Adjusting air volume
USA only
X Decrease/increase:
Press button I or
K.
The automatic mode is switched off. The
selected blower speed is shown in air
volume display G (Y page 170).
Canada only
X Decrease/increase:
Press button I or
K.
The automatic mode is switched off. The
selected blower speed appears in display
J (Y page 172). When using the Voice Control System, the
blower speed reduces automatically. When
the Voice Control System is not used
anymore, the blower speed increases to the
previously selected level. 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
side windows.
i Keep this setting selected only until the
windshield or the side windows are clear
again.
Activating X
Press button ¦.
The
indicator lamp in the button comes on.
The climate control switches to the
following functions automatically:
R most efficient blower speed and heating
power, depending on outside
temperature
R air flows onto the windshield and the
front door windows (side air vents must
be open)
R the air conditioning compressor
switches on at outside temperatures
above approximately 41‡ (5†) for air-
drying
Adjustments
You can adjust the air volume and the
temperature when the front defroster is
switched on. The air flow will remain on the
windshield and front door windows.
X Press button I to decrease or button
K
to increase air volume to the desired
level.
The air volume decreases/increases to the
next lower/higher blower speed and
heating switches to the temperature that 178
3-zone automatic climate control
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was set before the front defroster was
switched on.
The
indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
or
X Turn temperature control : and/or C
(USA only) ( Y page 170) or : and/or E
(Canada only)

(Y page 172) slightly in any
direction.
Heating switches to the temperature that
was set before the front defroster was
switched on.
The indicator lamp in button ¦ goes out.
The indicator lamp in button Á comes
on.
i The air conditioning compressor remains
on even if the indicator lamp in button
¦ goes out. This helps to prevent the
windshield from fogging.
Deactivating X
Press button ¦ once more.
The indicator lamp in the button goes out.
Defrosting is turned off.
The previous settings are once again in
effect. The air conditioning compressor
remains switched on.
i To deactivate, you can also press button
^ or Ã.
Windshield fogged on the outside X
Switch the windshield wipers on
(Y page 104).
X Press button Ã.
The indicator lamp in the button goes out.
Air volume and air distribution are
controlled separately for each zone.
If the automatic air volume and air
distribution are switched off: X
Press buttons O/c 13
and P/
\ 13
. Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e. g. before driving through
a tunnel). This setting cuts off the intake of
outside air and recirculates the air in the
passenger compartment. G
Warning!
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 button
¦.
X Activating: Press button d.
The
indicator lamp in the button comes on.
i The air recirculation mode is activated
automatically at high outside
temperatures.
The

indicator lamp in button d is not lit
when the air recirculation mode is switched
on automatically.
A quantity of outside air is added after
approximately 30 minutes.
If you have turned off the air conditioning
or the outside temperature is below 41‡
(5†), the air recirculation mode will not
switch on automatically.
X Deactivating: Press button d.
The indicator lamp in the button goes out.
13 Canada only 3-zone automatic climate control
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i
The manually selected air recirculation
mode is deactivated automatically:
R after 5 minutes if the outside
temperature is below approximately
41‡ (5†)
R after
5 minutes if the air conditioning and
air-drying are turned off
R after 30 minutes if the outside
temperature is above approximately
41‡ (5†)
At outside temperatures above 79‡ (26†)
the system will not automatically switch back
to outside air. A quantity of outside air is
added after approximately 30 minutes. Residual heat and ventilation
With
the engine switched off, it is possible to
continue to heat or ventilate the interior for
up to 30 minutes. This feature makes use of
the residual heat produced by the engine.
i How long the system will provide heating
depends on the coolant temperature and
the battery voltage.
Regardless of the temperature and air
volume set on the climate control panel, an
interior temperature is aimed at by 72‡
(22†) and the blower runs on low speed to
protect the vehicle battery.
X Activating: Switch off the ignition.
X Press button Á.
The
indicator lamp in the button comes on.
X Deactivating: Press button Á again.
The indicator lamp in the button goes out.
The residual heat is deactivated
automatically:
R when the ignition is switched on
R after approximately 30 minutes
R if the battery voltage drops
R if the coolant temperature is too low Using driver-side settings for all
temperature zones
This feature is only available in Canada
vehicles.
You can use the settings of the driver’s side,
such as temperature, air volume and air
distribution,

for all temperature zones. These
settings only need to be made once and the
climate control system will automatically
regulate the settings for all temperature
zones quickly and comfortably.
X Activating:
Adjust the air temperature, air
volume and air distribution.
X Press button ¸.
The
indicator lamp in the button comes on.
The driver-side settings are used for all
temperature zones.
X Deactivating: Press button ¸ again.
The indicator lamp in the button goes out.
i If you manually set the temperature, air
volume

or air distribution for the passenger
side or the rear passenger compartment
when the MONO setting is active, the
MONO setting will be switched off. Rear window defroster
G
Warning!
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 defroster uses a large
amount of power. To keep the battery drain
to a minimum, switch off the defroster as
soon as the rear window is clear. The
defroster is switched off automatically after
some time of operation depending on the
outside temperature. 180
Rear window defroster
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X
Switch on the ignition.
X Switching on: Press button ª on the
respective climate control panel.
The
indicator lamp in the button comes on.
X Switching off: Press button ª again.
The rear window defroster switches off when
the battery voltage is too low. The indicator
lamp in button ª flashes. Too many
electrical consumers may be operating
simultaneously.
X Switch off consumers that are currently not
needed if required. Power tilt/sliding sunroof
Opening and closing
G
Observe Safety notes, see page 55. G
Warning!
When opening or closing the tilt/sliding
sunroof, make sure there is no danger of
anyone

being harmed by the opening/closing
procedure.
The tilt/sliding sunroof is equipped with the
express operation and automatic reversal
function. If the movement of the tilt/sliding
sunroof is blocked during the closing
procedure, the tilt/sliding sunroof will stop
and open slightly.
The tilt/sliding sunroof operates differently
when the sunroof switch is pressed and held.
See the “Closing when the tilt/sliding sunroof
is blocked” section for details.
The opening/closing procedure of the tilt/
sliding sunroof can be immediately halted by
releasing the sunroof switch or, if the sunroof
switch was moved past the resistance point
and released, by moving the sunroof switch in
any direction. G
Warning!
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening

also presents a potential for injury for
occupants wearing their seat belts properly as
entire body parts or portions of them may
protrude from the passenger compartment.
! To avoid damaging the seals, do not
transport any objects with sharp edges
which can stick out of the tilt/sliding
sunroof.
Do not open the tilt/sliding sunroof if there
is snow or ice on the roof, as this could
result in malfunctions.
If you cannot open or close the tilt/sliding
sunroof due to a malfunction contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
! Please keep in mind that weather
conditions can sometimes change rapidly.
Make sure to close the tilt/sliding sunroof
when leaving the vehicle. If water enters
the vehicle interior, vehicle electronics
could be damaged which is not covered by
the Mercedes-Benz Limited Warranty.
i You can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO function, see “Summer
opening feature” ( Y page 108) and
“Convenience closing feature”
(Y page 108).
i After switching off the ignition or
removing the SmartKey from the starter
switch, you can operate the tilt/sliding
sunroof until you open the driver’s or front
passenger door. If no door was opened you
can operate the tilt/sliding sunroof for up
to 5 minutes. Power tilt/sliding sunroof
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Sunroof switch
:
Raising
; Opening
= Closing
With the sunroof closed or raised, you can
slide the sunroof screen forward and back. Sunroof screen
X
Switch on the ignition.
Opening X
Opening manually: Press and hold the
sunroof switch to the resistance point in
direction of arrow ;.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To open the tilt/
sliding sunroof completely, press the
sunroof switch past the resistance point in
direction of arrow ; and release.
X Stopping during express operation:
Move the sunroof switch in any direction. i
Express opening is not available when the
tilt/sliding sunroof is raised. The tilt/
sliding sunroof must be closed first.
i When the tilt/sliding sunroof is open,
resonance noises may result in addition to
the usual wind noises. They are caused by
minimal pressure changes in the passenger
compartment. To reduce or eliminate these
noises, change the position of the tilt/
sliding sunroof or open a window slightly.
Raising X
Raising manually: Press and hold the
sunroof switch to the resistance point in
direction of arrow :.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To raise the tilt/
sliding sunroof completely, press the
sunroof switch past the resistance point in
direction of arrow : and release.
X Stopping during express operation:
Move the sunroof switch in any direction.
i Express raising is not available when the
tilt/sliding sunroof is open. The tilt/sliding
sunroof must be closed first.
Closing X
Closing manually: Pull and hold the
sunroof switch to the resistance point in
direction of arrow =.
X Release the sunroof switch when the
desired position is reached.
X Express operation: To close the tilt/
sliding sunroof completely, pull the sunroof
switch past the resistance point in
direction of arrow = and release.
X Stopping during express operation:
Move the sunroof switch in any direction. 182
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