2010 MERCEDES-BENZ R320 warning

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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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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Closing when the tilt/sliding sunroof is
blocked
G
Warning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing the tilt/sliding sunroof with greater
force or without automatic reversal function.
If the movement of the tilt/sliding sunroof is
blocked
during the closing procedure (e.g. by
ice or pollution), the tilt/sliding sunroof will
stop and open slightly.
X Immediately after the tilt/sliding sunroof
has stopped and opened because it was
blocked, pull and hold the sunroof switch
in

direction of arrow = until the tilt/sliding
sunroof is fully closed.
The tilt/sliding sunroof closes with greater
force.
If the tilt/sliding sunroof is blocked again and
opens slightly:
X Immediately after the tilt/sliding sunroof
was

blocked and has opened, pull and hold
the sunroof switch in direction of arrow
= until the tilt/sliding sunroof is fully
closed.
The tilt/sliding sunroof closes without
automatic reversal function. G
Warning!
Pulling and holding the sunroof switch to
close the tilt/sliding sunroof immediately
after

it had been blocked two times will cause
the tilt/sliding sunroof to close without any
reversal function for as long as you hold the
sunroof switch. Synchronizing
The
tilt/sliding sunroof must be synchronized
R after the battery has been disconnected or
discharged
R after a malfunction
R if the tilt/sliding sunroof does not open
smoothly
! If the tilt/sliding sunroof cannot be closed
or synchronized, contact an authorized
Mercedes-Benz Center or call Roadside
Assistance.
X Vehicles with SmartKey: Switch off the
ignition

and remove the SmartKey from the
starter switch.
X Vehicles with KEYLESS-GO: Switch off the
ignition and open the driver’s door. This
puts the starter switch in position 0, same
as with the SmartKey removed from the
starter switch. The driver’s door then can
be closed again.
X Remove the fuse for the tilt/sliding sunroof
from the fuse box (Y page 340).
X Reinsert the fuse in the fuse box.
X Switch on the ignition.
X Press and hold the sunroof switch in
direction

of arrow : (Y page 182) until the
tilt/sliding sunroof is fully raised at the
rear.
X Keep holding the sunroof switch in
direction of arrow : for approximately
1 second.
X Check the express operation feature
(Y page 182).
If

the tilt/sliding sunroof opens and closes
completely, the roof is synchronized.
Otherwise repeat the above steps. Power tilt/sliding sunroof
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Panorama roof with power tilt/
sliding panel
Extending and retracting the roller
sunblinds
The roller sunblinds only operate with the tilt/
sliding panel closed. The front and rear roller
sunblind cannot be operated individually. G
Warning!
When extending the roller sunblinds, make
sure no one is in danger of being injured by
the extending procedure. The extending of the
roller sunblinds can be immediately halted by
releasing the switch. Roof panel switch
:
Retracting
; Retracting
= Extending
X Switch on the ignition.
X Retracting/Extending: Move the roof
panel switch to the resistance point in the
required direction of arrow :, ; or =
until the roller sunblinds have reached their
desired position.
X Express retracting: Push the roof panel
switch past the resistance point in
direction of arrow ; and release.
The roller sunblinds retract completely.
X Stopping during express retracting:
Move the roof panel switch in any direction. Opening and closing the panorama
roof with power tilt/sliding panel
G
Observe Safety notes, see page 55. G
Warning!
When opening or closing the tilt/sliding panel,
make sure there is no danger of anyone being
harmed by the opening/closing procedure.
The tilt/sliding panel is equipped with the
express operation and automatic reversal
function. If the movement of the tilt/sliding
panel is blocked during the closing procedure,
the tilt/sliding panel will stop and open
slightly.
The tilt/sliding panel operates differently
when the roof panel switch is pressed and
held. See the “Closing when the tilt/sliding
panel is blocked” section in this chapter for
details.
The opening/closing procedure of the tilt/
sliding panel can be immediately halted by
releasing the roof panel switch or, if the roof
panel switch was moved past the resistance
point and released, by moving the roof panel
switch in any direction. G
Warning!
The panorama roof with tilt/sliding panel 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 panel.
Do not open the tilt/sliding panel if there is
snow or ice on the roof, as this could result
in malfunctions. 184
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!
Please keep in mind that weather
conditions can sometimes change rapidly.
Make sure to close the tilt/sliding panel
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. Roof panel switch
:
Raising
; Opening
= Closing
The tilt/sliding panel only operates with the
roller sunblinds retracted.
i You can also open or close the tilt/sliding
panel using the SmartKey, see “Summer
opening feature” ( Y page 108) or see
“Convenience closing feature”
(Y page 108).
X Switch on the ignition.
Opening X
Opening manually: Press and hold the
roof panel switch to the resistance point in
direction of arrow ;.
X Release the roof panel switch when the
desired position is reached.
X Express operation: To open the tilt/
sliding panel completely, press the roof
panel switch past the resistance point in
direction of arrow ; and release.
X Stopping during express operation:
Move the roof panel switch in any direction. i
Express opening is not available when the
tilt/sliding panel is raised. The tilt/sliding
panel must be closed first.
i When the tilt/sliding panel 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 panel or open a window slightly.
Raising X
Raising manually: Press and hold the roof
panel switch in direction of arrow :.
X Release the roof panel switch when the
desired position is reached.
Closing X
Closing manually: Pull and hold the roof
panel switch in direction of arrow =.
X Release the roof panel switch when the
desired position is reached.
Closing when the tilt/sliding panel is
blocked G
Warning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing the tilt/sliding panel without
automatic reversal function.
If the movement of the tilt/sliding panel is
blocked during the closing procedure (e.g. by
ice or pollution), the tilt/sliding panel will stop
and open slightly.
X Immediately after the tilt/sliding panel has
stopped and opened because it was
blocked, pull and hold the roof panel switch
in direction of arrow = until the tilt/sliding
panel is fully closed. Panorama roof with power tilt/sliding panel
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If the tilt/sliding panel is blocked again and
opens slightly:
X
Immediately after the tilt/sliding panel was
blocked and has opened, pull and hold the
roof panel switch in direction of arrow =
until the tilt/sliding panel is fully closed.
The tilt sliding panel closes without
automatic reversal function. G
Warning!
Pulling and holding the roof panel switch to
close the tilt/sliding panel immediately after
it had been blocked two times will cause the
tilt/sliding
panel to close without any reversal
function for as long as you hold the roof panel
switch. Synchronizing
The tilt/sliding panel and roller sunblinds
must be synchronized
R after

the battery has been disconnected or
discharged
R after a malfunction
R if the tilt/sliding panel does not open
smoothly
! Do not attempt to open the tilt/sliding
panel before the tilt/sliding panel is
properly synchronized. The tilt/sliding
panel could otherwise lock-up in the open
position.
If the tilt/sliding panel cannot be closed or
synchronized, contact an authorized
Mercedes-Benz Center or call Roadside
Assistance.
X Vehicles with SmartKey: Remove the
SmartKey from the starter switch.
X Vehicles with KEYLESS-GO: Switch off the
ignition and open the driver’s door. This
puts the starter switch in position 0, same
as with the SmartKey removed from the starter switch. The driver’s door then can
be closed again.
X Remove the respective fuse from the fuse
box (Y page 340).
X Reinsert the fuse in the fuse box.
X Switch on the ignition.
X Push and hold the roof panel switch in
direction

of arrow = (Y page 185) until the
roller sunblinds are fully extended.
X Keep holding the roof panel switch in
direction of arrow = (Y page 185) for
approximately 1 second.
X Pull and hold the roof panel switch in
direction

of arrow ; (Y page 185) until the
roller sunblinds are fully retracted.
X Keep holding the roof panel switch in
direction of arrow ; (Y page 185) for
approximately 1 second.
X Push and hold the roof panel switch in
direction

of arrow = (Y page 185) until the
tilt/sliding panel is fully closed.
X Keep holding the roof panel switch in
direction of arrow = (Y page 185) for
approximately 1 second.
X Check the express operation feature of the
tilt/sliding panel ( Y page 184).
If the tilt/sliding panel opens completely,
the

roof is synchronized. Otherwise repeat
the above steps. Loading and storing
Loading instructions
G
Warning!
Always fasten items being carried as securely
as possible. Use cargo tie-down rings and
fastening

materials appropriate for the weight
and size of the load.
In an accident, during hard braking or sudden
maneuvers, loose items will be thrown around
inside the vehicle. This can cause injury to 186
Loading and storing
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