MERCEDES-BENZ R350 2007 R171 Owner's Manual

240 Controls in detail
3-zone automatic climate control*
Windshield fogged on the outside
Switch the windshield wipers on
(
page 60).
Press buttonU (page 234).
AUTO appears in the displaye
(
page 234). Air volume and air
distribution are controlled separately
for each zone.
If the automatic air distribution and air
volume are switched off:
Press buttons8 and Y
(
page 234).
Maximum cooling MAX COOL
If the air distribution control as well as the
airflow volume control are set toU and
there is a high need for cooling, the
MAX COOL function is activated.
“
MAX COOL” appears in the front and rear
display.
This provides the fastest possible cooling
of the vehicle interior (when windows and
tilt/sliding sunroof* or tilt/sliding panel*
are closed).
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.
iKeep this setting selected only until the
windshield is clear again.
Warning!G
Fogged windows impair visibility, endanger-
ing 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 (
page 243) is activated, or
press button0.

241 Controls in detail
3-zone automatic climate control*
Activating
Press button: (page 234).
The indicator lamp on the button
comes on.
Deactivating
Press button: (page 234).
The indicator lamp on the button goes
out.
At outside temperatures above
79°F (26°C) the system will not automati-
cally switch back to outside air. A quantity
of outside air is added after approximately
30 minutes.
iThe air recirculation mode is activated
automatically at high outside temperatures.
The indicator lamp on button: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
(
page 243) or the outside temperature is
below 41°F (5°C), the air recirculation mode will
not switch on automatically.
Warning!G
Never operate the windows and tilt/sliding
sunroof* or tilt/sliding panel* if there is the
possibility of anyone being harmed by the
opening or closing procedure.
In case the procedure causes potential
danger:
Vehicles with or without tilt/sliding
sunroof*: The closing of the windows can be
immediately halted by pressing or pulling
the respective window switch. The closing of
the tilt/sliding sunroof* can be immediately
halted by moving the switch for the
tilt/sliding sunroof* in any direction.
The closing of the windows and the
tilt/sliding sunroof* can be reversed by
again pressing and holding the:button.
Vehicles with panorama roof*: The closing
of the windows and tilt/sliding panel* can
be immediately halted by releasing
the:button.
iTo cool the interior as fast as possible,
the automatic climate control automatically
switches to air recirculation. The indicator lamp
on button: is not lit when the system
switches to air recirculation automatically.
iThe air recirculation mode is deactivated
automatically

after 5 minutes if the outside temperature is
below approximately 41°F (5°C)

after 5 minutes if the air conditioning and
air-drying is turned off

after 30 minutes if the outside temperature
is above approximately 41°F (5°C)

242 Controls in detail
3-zone automatic climate control*
Air recirculation mode with
convenience closing and opening
feature
Vehicles with tilt/sliding sunroof*
Convenience closing:
Press button: for approximately
2 seconds.
The windows and/or tilt/sliding
sunroof will close. You can release
button: once the closing proce-
dure has begun. The windows and
tilt/sliding sunroof continue closing
until they are fully closed. The indicator
lamp on the button comes on. The air
recirculation mode is activated.Convenience opening:
Press button: for approximately
2 seconds.
The windows and/or tilt/sliding
sunroof will return to their previous
positions. You can release button:
once the opening procedure has
begun. The windows and tilt/sliding
sunroof continue opening until they
have reached their previous positions.
The indicator lamp on the button goes
out. The air recirculation mode is
deactivated.
Vehicles with panorama roof*
Convenience closing:
Press and hold button: until the
windows and the tilt/sliding panel are
closed or have reached the desired po-
sition. The indicator lamp on the button
comes on. The air recirculation mode is
activated.
Warning!G
Never operate the windows and tilt/sliding
sunroof* or tilt/sliding panel* if there is the
possibility of anyone being harmed by the
opening or closing procedure.
In case the procedure causes potential
danger:
Vehicles with or without tilt/sliding
sunroof*: The closing of the windows can be
immediately halted by pressing or pulling
the respective window switch. The closing of
the tilt/sliding sunroof* can be immediately
halted by moving the switch for the
tilt/sliding sunroof* in any direction.
The closing of the windows and the
tilt/sliding sunroof* can be reversed by
again pressing and holding the: button.
Vehicles with panorama roof*: The closing
of the windows and tilt/sliding panel* can
be immediately halted by releasing
the:button.
iA window, the tilt/sliding sunroof*, or the
tilt/sliding panel* will only return to its previous
position if it has not been moved to another
position using the respective window switch or
tilt/sliding sunroof* (or tilt/sliding panel*)
switch after it was closed with button :.

243 Controls in detail
3-zone automatic climate control*
Convenience opening:
Press and hold button: until the
windows and the tilt/sliding panel are
opened or have reached the desired
position. The indicator lamp on the
button goes out. The air recirculation
mode is deactivated.
Air conditioning
The cooling function, only operational
when the engine is running, cools the
vehicle down to the selected interior
temperature. The cooling function also
dehumidifies the air in the vehicle interior,
thereby preventing the windows from
fogging up.Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the
vehicle will then no longer be cooled or
dehumidified.
Press button9 (page 234).
The indicator lamp on the button goes
out. The cooling function switches off
after a short delay.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button9 again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R-134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
iCondensation may drip out from underneath
the vehicle. This is normal and not an indication
of a malfunction.
Warning!G
If you turn off the cooling function, the
interior air is not dried. The windows can fog
up more quickly. Window fogging may
impair visibility and endanger you and
others.
!If the air conditioning cannot be turned on
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 Light Truck Center.

244 Controls in detail
3-zone automatic climate control*
Using driver-side settings for all
temperature zones
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 automatic climate control system
will automatically regulate the settings for
all temperature zones quickly and comfort-
ably.
Activating
Adjust the temperature, air volume and
air distribution (
page 234).
Press button; (page 234).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.Deactivating
Press button; (page 234) again.
The indicator lamp on the button goes
out.
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.
iIf 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.
iHow long the system will provide heating
depends on

the coolant temperature

the battery voltage
Regardless of the temperature and air volume
set on the automatic climate control panel, an
interior temperature is aimed at by 72°F (22°C)
and the blower runs on low speed to protect the
vehicle battery.

245 Controls in detail
3-zone automatic climate control*
Activating
Switch off the ignition (page 39).
Press button9 (page 234).
The indicator lamp on the button
comes on.
Deactivating
Press button9.
The indicator lamp on the button goes
out.Rear automatic climate control
(second row)
The control panel is located at the rear of
the front center console.
Rear automatic climate control panel
iThe residual heat is automatically turned off:

when the ignition is switched on

after about 30 minutes

if the coolant temperature is too low

if the battery voltage drops
1Increasing air volume
2Air distribution and air volume
(automatic, manual)
3Air distribution (directs air through
the side air vents
4Right rear center air vent, adjustable
5Air distribution (directs air through
the footwells and side air vents)
6Rear automatic climate control
on/off
7Decreasing air volume
8Left rear center air vent, adjustable
9Indicator lamps for air volume
settings
aTemperature control

246 Controls in detail
3-zone automatic climate control*
Activating rear automatic climate
control
Press buttonU.
The indicator lamp on the button
comes on. The temperature, air
volume, and air distribution are ad-
justed automatically.
Deactivating rear automatic climate
control
Press button´.
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Operating from the front
Deactivating
Press button> (page 234).
The indicator lamp on the button
comes on.
In displaye (
page 234), you will see
the >symbol followed by
MODE for
approximately 3 seconds.
Press button´ (page 234).
In displaye (
page 234), you will see
the >symbol followed by
OFF.
The rear automatic climate control is
switched off.Reactivating
Press button> (page 234).
The indicator lamp on the button
comes on.
In displaye (
page 234), you will see
the >symbol followed by
ON and
MODE. The MODE display is cleared and
the indicator lamp on button>
goes out after approximately
3 seconds.
The rear automatic climate control
switches on.
iThe automatic climate control must be
switched on (
page 236).
iSwitch off the rear automatic climate
control for improved cooling or heating output in
the front passenger compartment.
You can also switch off the rear automatic
climate control from the front passenger com-
partment (
page 246).

247 Controls in detail
3-zone automatic climate control*
Setting the temperature
Make sure the front automatic climate
control is switched on (
page 236).
Press button> (page 234).
The indicator lamp on the button
comes on.
In displaye (
page 234), you will see
the >symbol followed by
MODE.
Set the desired temperature for the
rear passenger compartment using
temperature control 9 (
page 234).
After approximately 3 seconds after
the last adjustment, the display switch-
es back to its standard display and the
indicator lamp on button> goes
out.Adjusting air distribution
Use the air distribution controls3 or5
to adjust the air distribution for the rear
passenger compartment.
The symbols on the controls represent the
following functions:Adjusting manually
Press the desired air distribution con-
trol.
The indicator lamp on button U
goes out.
Adjusting automatically
Press buttonU.
The indicator lamp on the button
comes on. The air distribution is ad-
justed automatically.
iYou can also press the>button once
more to switch back to the standard display.
SymbolFunction
ZDirects air to the center air
vents
YDirects air to the footwells and
the side air vents

248 Controls in detail
3-zone automatic climate control*
Setting the temperature
Use temperature controla (
page 245)
to separately adjust the air temperature of
the rear passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C). The automatic
climate control will adjust to the set
temperature as fast as possible.Increasing the temperatureTurn temperature controla
(
page 245) slightly clockwise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.
Decreasing the temperature
Turn temperature controla
(
page 245) slightly counterclock-
wise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.Adjusting air volume
Adjusting manually
Five blower speeds are available.
Press button
to decrease or
buttonQ to increase air volume to
the desired level.
The indicator lamp on buttonU
goes out. The selected blower speed is
shown by the indicator lamps for air
volume settings 9 (
page 245).
Adjusting automatically
Press buttonU.
The indicator lamp on the button
comes on. The air volume is adjusted
automatically.
iThe rear automatic climate control will not
cool the air when the air conditioning is switched
off (
page 243).

249 Controls in detail
3-zone automatic climate control*
B-pillar air vents
Air vents are located in both B-pillars.
1Air vent, adjustable
2Thumbwheel for air volume control
Adjusting air volume
Turn thumbwheel 2 to the left to
increase the air volume.
or
Turn thumbwheel 2 to the right to
decrease the air volume.Adjusting air distribution
Move air vent slider 1 to the left, right,
up, or down to direct the air in the de-
sired direction.
Rear automatic climate control
(second and third row)*
The rear automatic climate control for the
second and third row* is operated in the
same manner as the rear automatic
climate control for the second row
(
page 245).Air vents are located in the left and right
side trim below the rear quarter windows.
1Defrost air vent for rear quarter
window, fixed
2Air vent, adjustable
3Thumbwheel for air volume control