MERCEDES-BENZ R500 2006 W251 Owner's Manual

240 Controls in detail3-zone automatic climate control*
Deactivating
Press button:(
page 232).
The indicator lamp on the:button
goes out.
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 dan-
ger:
Vehicles with or without tilt/sliding sun-
roof*: The closing of the windows can be im-
mediately 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/slid-
ing 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.
iIf you press and hold button:, the
windows and the tilt/sliding sunroof*
or tilt/sliding panel* will close.iTo cool the interior as fast as possible,
the automatic climate control automat-
ically switches to air recirculation. The
indicator lamp on button:is not lit
when the system switches to air recir-
culation automatically.
iThe air recirculation mode is
deactivated automatically

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


after five minutes if the air condi-
tioning and air-drying is turned off


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

241 Controls in detail
3-zone automatic climate control*
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Air conditioning
The cooling function, only operational
when the engine is running, cools the vehi-
cle down to the selected interior tempera-
ture. The cooling function also
dehumidifies the air in the vehicle interior,
thereby preventing the windows from fog-
ging up.
iPress and hold button:for approx-
imately 2 seconds. The windows,
and/or the tilt/sliding sunroof*, (or
tilt/sliding panel*) will return to their
previous position. You can release
button:once the opening proce-
dure has begun. The windows and/or
the tilt/sliding sunroof* (or tilt/sliding
panel*) continue opening until they
have reached their previous position.
A window or the tilt/sliding sunroof*
(or 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:.
A window or the tilt/sliding sunroof (or
tilt/sliding panel*) that was moved will
remain in its current position if
button:is used to re-open the re-
maining windows or tilt sliding sun-
roof* (or tilt/sliding panel*).
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.Warning!
G
If you turn off the cooling function, 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.

242 Controls in detail3-zone automatic climate control*Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the automatic
climate control system. The air in the vehi-
cle will then no longer be cooled or dehu-
midified.
Press button9 (
page 232).
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.Using driver-side settings for all tem-
perature 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 climate control system will auto-
matically regulate the settings for all tem-
perature zones quickly and comfortably.
Activating
Adjust the temperature, air volume and
air distribution (
page 232).

Press button; (
page 232).
The indicator lamp on the button
comes on.
The driver-side settings are used for all
temperature zones.
!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.

243 Controls in detail
3-zone automatic climate control*
Deactivating
Press button; (
page 232) 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.Activating

Switch off the ignition (
page 38).

Press button9 (
page 232).
The indicator lamp on the button
comes on.
Deactivating

Press button9.
The indicator lamp on the button goes
out.
iIf you manually set the temperature, air
volume or air distribution for the pas-
senger side or the rear passenger com-
partment when the MONO setting is
active, the MONO setting will be
switched off.
iHow long the system will provide heat-
ing 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.
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

244 Controls in detail3-zone automatic climate control*Rear automatic climate control
The control panel is located in the rear cen-
ter console.Rear automatic climate control panel
Activating rear air conditioning
Press buttonU.
The indicator lamp on the button
comes on. The temperature, air vol-
ume, and air distribution are adjusted
automatically.
Deactivating rear air conditioning

Press button´.
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.
1
Increase air volume
2
Air distribution and air volume
(automatic, manual)
3
Air distribution (directs air through
the side air vents
4
Right rear center air vent, adjustable
5
Air distribution (directs air through
the footwells and side air vents)
6
Rear automatic climate control
on/off
7
Decrease air volume
8
Left rear center air vent, adjustable
9
Indicator lamps for air volume
settings
a
Temperature control
iThe climate control must be switched
on (
page 234).

245 Controls in detail
3-zone automatic climate control*
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 adjust-
ed automatically.Setting the temperature
Use temperature controla (
page 244)
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 cli-
mate control will adjust to the set temper-
ature as fast as possible.
iSwitch off the rear automatic climate
control for improved cooling or heating
output in the front passenger compart-
ment.
You can also switch off the rear auto-
matic climate control from the front
passenger compartment (
page 235).
Symbol
Function
Z
Directs air to the center air
vents
Y
Directs air to the footwells and
the side air vents
iThe rear automatic climate control will
not cool the air when the air condition-
ing is switched off (
page 242).

246 Controls in detail3-zone automatic climate control*Increasing the temperature
Turn temperature controla
(page 244) 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 244) slightly counterclock-
wise.
The rear automatic climate control will
correspondingly adjust the interior air
temperature for the rear passenger
compartment.Setting the temperature from the front
automatic climate control panel
You can adjust the temperature for the
rear automatic climate control from the
front panel.

Make sure the front automatic climate
control is switched on (
page 234).

Press button> (
page 232).
The indicator lamp on button>
comes on.
In displaye (
page 232), you will see
the >symbol followed by
MODE
.

Set the desired temperature for the
rear passenger compartment using
temperature control 9 (
page 232).
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 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 theU button
goes out. The selected blower speed is
shown by the indicator lamps for air
volume settings 9 (
page 244).
Adjusting automatically

Press buttonU.
The indicator lamp on the button
comes on. The air volume is adjusted
automatically.iYou can also press the>button
once more to switch back to the stan-
dard display.

247 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 in-
crease the air volume.
or

Turn thumbwheel 2 to the right to de-
crease 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.
Air vents in third-row side trim
Air vents are located in the left and right
side trim below the hinged quarter win-
dows.
1Defrost air vent for hinged quarter
window, fixed
2Air vent, adjustable
3Thumbwheel for air volume controlAdjusting air volume

Turn thumbwheel 3 downwards to in-
crease the air volume.
or

Turn thumbwheel 3 upwards to de-
crease the air volume.
Adjusting air distribution

Move air vent slider 2 to the left, right,
up, or down
The air is directed in the desired direc-
tion.

248 Controls in detailPower windowsOpening and closing
The door windows and the hinged quarter
windows are opened and closed electrical-
ly. The switches for all door windows and
the hinge quarter windows are located on
the driver’s door control panel
(page 34). The switches for the respec-
tive door windows are located on the con-
trol panels of the front passenger door and
the rear doors. The hinged quarter win-
dows can be operated from the driver’s
seat only.1Left front door window
2Right front door window
3Right rear door window
4Hinged quarter windows
5Override switch (
page 93)
6Left rear door window

Switch on the ignition (
page 38).
Warning!
G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
Activate the override switch (
page 93)
when children are riding in the back seats of
the vehicle. The children may otherwise in-
jure themselves, e.g. by becoming trapped
in the window opening.
The closing of a door window can be imme-
diately halted by releasing the switch or, if
switch was pulled past the resistance point
and released, by either pressing or pulling
the respective switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you pulled the switch past the resistance
point and released it to close the door win-
dow, the automatic reversal function will
stop the door window and open it slightly.

249 Controls in detail
Power windows
Opening the door windows
Press switch1, 2, 3, or6
(page 248) to the resistance point.
The corresponding door window moves
downwards until you release the
switch.
Closing the door windows

Pull switch1, 2, 3, or6
(page 248) to the resistance point.
The corresponding door window moves
upwards until you release the switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing a door window by pulling and
holding the switch, or by pressing and hold-
ing button‹on the SmartKey, by press-
ing and holding the lock button (vehicles
with KEYLESS-GO*) on the door handle, the
automatic reversal function will not operate.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment can cause an accident
and / or serious personal injury.
iYou can also open or close the win-
dows using the SmartKey, see “Sum-
mer opening feature” (
page 251)
and “Convenience closing feature”
(
page 252).
Depending on the current position, the
power windows may also open or close
when the air recirculation buttonÄ
on the control panel of the climate con-
trol (page 218) or automatic climate
control (page 232) is pressed and
held.
iWith the SmartKey in starter switch
position0 or removed from the starter
switch, the windows can be operated

until you open the driver’s or front
passenger door


for at least 5 minutes
Warning!
G
If you pull and hold the switch up when clos-
ing the door window, and upward movement
of the door window is blocked by some ob-
struction including but not limited to arms,
hands, fingers, etc., the automatic reversal
will not operate.