2007 MERCEDES-BENZ R350 Owner's Manual

232 Controls in detail
3-zone automatic climate control*

233 Controls in detail
3-zone automatic climate control*
1Left side air vent, adjustable
2Thumbwheel for air volume control
for left side and door air vent
3Left center air vent, adjustable
4Right center air vent, adjustable
5Thumbwheel for air volume control
for left center air vent
6Thumbwheel for air volume control
for right center air vent
7Thumbwheel for air volume control
for right side and door air vent
8Right side air vent, adjustable
9Front passenger door air vent, fixed
aAutomatic climate control panel
bDriver’s door air vent, fixed
iFor draft-free ventilation, move the sliders
for center air vents and side air vents to the
middle position.

234 Controls in detail
3-zone automatic climate control*
1Temperature control, driver’s side
2Air distribution and air volume
(automatic, manual)
3Air distribution, driver’s side
4Front defroster
0USA only
P Canada only
5Increasing air volume
6Rear window defroster
1 USA only
F Canada only
7Air distribution, passenger side
8Rear automatic climate control
on/off
>USA only
™Canada only
9Temperature control, passenger side
aAutomatic climate control on/off
bAir distribution, passenger side
cAir distribution, passenger side
dAC cooling on/off
Residual heat/ventilation
eDisplay
fDecreasing air volume
gAir recirculation
hAir distribution, driver’s side
jAir distribution, driver’s side
kInterior temperature sensor
lAdopting driver’s side settings for all
zones

235 Controls in detail
3-zone automatic climate control*
The automatic climate control is a 3-zone
intelligent automatic climate control
system. Your vehicle interior is divided
into 3 zones.With the help of a sun sensor, the
automatic climate control determines the
relation of the sun to the vehicle and auto-
matically adjusts the inside temperature
for each individual zone.
The automatic climate control is oper-
ational whenever the engine is running. It
cools the vehicle’s interior according to the
angle and intensity of the sun’s rays, the
outside temperature and the selected tem-
perature. You can operate the automatic
climate control in either the automatic or
manual mode.
Nearly all dust particles, pollutants and
odors are filtered out before outside air
enters the passenger compartment
through the air distribution system.
The air conditioning will not engage (no
cooling) if the A/C mode is deactivated
(
page 243).
Warning!G
When operating the automatic 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 may cause burns or frost-
bite 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
controls (
page 234) to direct the air to air
vents in the vehicle interior that are not in
the immediate area of unprotected skin.

236 Controls in detail
3-zone automatic climate control*
Deactivating the automatic climate
control system
Deactivating
Press button´ (page 234) until
the displaye (
page 234) is cleared.
The indicator lamp on the button
comes on.Reactivating
Press buttonU (page 234).Warning!G
Follow the recommended settings for heat-
ing and cooling given on the following
pages. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air pollution)
may require replacement of the filter before its
scheduled interval. A clogged filter will reduce
the air volume to the interior.
If the vehicle interior is hot, ventilate the interior
before driving off, see “Summer opening fea-
ture” (
page 254). The automatic climate
control will then adjust the interior temperature
to the set value much faster.
Keep the air intake grille in front of the wind-
shield free of snow and debris.
Warning!G
When the automatic 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.
iYou can also press button´
(
page 234) on the automatic climate control
panel.
If you press button0 (
page 234) to reacti-
vate the automatic climate control system, the
defrosting mode is activated.

237 Controls in detail
3-zone automatic climate control*
Operating the automatic climate
control system in automatic mode
You can switch the automatic climate
control system on and off separately for
each zone as needed.
Activating
Press buttonU (page 234) while
the engine is running.
The indicator lamp on the button
comes on.
AUTO appears in the
displaye (
page 234). Air volume
and air distribution are controlled
separately for each zone.
Use temperature controls1 and9
(
page 234) to separately adjust the
air temperature on each side of the
passenger compartment.
The temperature of the interior is
adjusted automatically.
Deactivating
Press one button of the air distribution
(
page 234) or press button

orQ (
page 234).
The indicator lamp on the buttonU
goes out and
AUTO disappears in the
displaye (
page 234).
Depending on which button you press –
the air distribution button or the air vol-
ume button
or Q – automatic
control of either the air distribution or
air volume is switched off.
Setting the temperature
Use temperature controls1 and9
(
page 234) to separately adjust the air
temperature on each side of the passenger
compartment. You should raise or lower
the temperature setting in small incre-
ments, preferably starting at 72°F (22°C).
The automatic climate control will adjust
to the set temperature as fast as possible.
Increasing
Turn temperature control
1and/or9 slightly clockwise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
Decreasing
Turn temperature control
1and/or9 slightly counterclock-
wise.
The automatic climate control system
will correspondingly adjust the interior
air temperature.
iWhen operating the automatic climate con-
trol system in automatic mode, you will only
rarely need to adjust the temperature, air volume
and air distribution.
In automatic mode, cooling with dehumidify is
switched on. This function can be switched off if
necessary.

238 Controls in detail
3-zone automatic climate control*
Adjusting air distribution
Use the air distribution buttons3,h,
orj for the driver’s side, or7,b, orc
(
page 234) for the passenger side to
separately adjust the air distribution on
each side of the passenger compartment.
The following symbols are found on the
buttons:
Press the desired air distribution
button (
page 234).
The indicator lamp on the desired
button comes on.
Adjusting the air distribution for the
center and side air vents
Opening the center air vents
Turn thumbwheels 5 and 6
(
page 232) upward.
The corresponding center air vents on
the left and right are open.
Closing the center air vents
Turn thumbwheels 5 and 6
(
page 232) downward.
The corresponding center air vents on
the left and right are closed.Opening the side air vents
Turn thumbwheels 2 and 7
(
page 232) upward.
The corresponding side air vents on the
left and right are open.
Closing the side air vents
Turn thumbwheels 2 and 7
(
page 232) downward.
The corresponding side air vents on the
left and right are closed.
SymbolFunction
Driver’s
sidePassen-
ger side
6ZDirects air to the
windshield and
side air vents
7aDirects air through
the center, side
and rear passen-
ger compartment
air vents
8YDirects air to the
footwells and side
air vents

239 Controls in detail
3-zone automatic climate control*
Adjusting air volume
Five blower speeds are available.
Press button
to decrease or
buttonQ to increase air volume
(
page 234) to the desired level.
The indicator lamp on buttonU
goes out.
The
AUTO display disappears in the
display e (
page 234) and the
automatic mode is switched off. The
selected blower speed appears in the
displaye (
page 234).
Front defroster
You can use this setting to defrost the
windshield, such as when it is iced up. You
can also use it to defog the windshield and
side windows.
Activating
Press button0 (page 234).
The indicator lamp on the button
comes on.The automatic climate control switches to
the following functions automatically:

maximum blower speed and heating
power

air flows onto the windshield and the
front side windows (side air vents must
be open)

the air conditioning compressor
switches on at outside temperatures
above approximately 41°F (5°C) for
air-drying
Deactivating
Press button0 (page 234).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
iKeep this setting selected only until the
windshield or the side windows are clear again.
When the defrost setting has been selected, only
the rear window defroster can be switched on.
No other settings are possible.
iTo switch off, you can also press
button´ orU (
page 234).