2008 MERCEDES-BENZ R320 warning

231 Controls in detail
3-zone automatic climate control*
Maximum cooling MAXCOOL
If the air distribution control as well as the
airflow volume control are set toU and
there is a high need for cooling, the
MAXCOOL function is activated.
“
MAXCOOL” appears in the 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.Activating
Press button: (page 224).
The indicator lamp on the button
comes on.
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 233) is activated, or
press button|.
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 233) or the outside temperature is
below 41°F (5°C), the air recirculation mode will
not switch on automatically.
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.

232 Controls in detail
3-zone automatic climate control*
Deactivating
Press button: (page 224).
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.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.
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)
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:.

233 Controls in detail
3-zone automatic climate control*
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.
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.
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.

241 Controls in detail
Power windows
Power windows
The door windows and the hinged quarter
windows* are opened and closed electri-
cally. The switches for all door windows
and the hinged quarter windows* are
located on the driver’s door control panel.
The switches for the respective door win-
dows are located on the front passenger
door and the rear doors. The hinged
quarter windows* can be operated from
the driver’s seat only.
Switch on the ignition (page 39).
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 97)
when children are riding in the back seats of
the vehicle. The children could 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.
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 childrenunattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
iYou can also open or close the windows
using the SmartKey, see “Summer opening
feature” (
page 244) and “Convenience
closing feature” (
page 245).
Depending on the current position, the power
windows may also open or close when the air
recirculation button:on the control panel
of the climate control (
page 210) or automatic
climate control* (
page 224) is pressed and
held.
iAfter switching off the ignition (page 39)
or removing the SmartKey from the starter
switch, the windows can be operated

until you open the driver’s or front passenger
door

for at least 5 minutes if nor door was opened

242 Controls in detail
Power windows
Door windows
1Left front door window
2Right front door window
3Right rear door window
4Left rear door windowOpening the door windows
Press switch1, 2, 3, or4
(
page 242) to the resistance point.
The corresponding door window moves
downwards until you release the
switch.
Closing the door windows
Pull switch1, 2, 3, or4
(
page 242) to the resistance point.
The corresponding door window moves
upwards until you release the switch.Fully opening the door windows
(Express-open)
Press switch1, 2, 3, or4
(
page 242) past the resistance point
and release.
The corresponding door window opens
completely.
Fully closing the door windows
(Express-close)
Pull switch1, 2, 3, or4
(
page 242) past the resistance point
and release.
The corresponding door window closes
completely.
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
obstruction including but not limited to
arms, hands, fingers, etc., the automatic
reversal will not operate.
Warning!G
Driver’s door only:
If within 5 seconds switch is again pulled
past the resistance point and released, the
automatic reversal will not function.

245 Controls in detail
Power windows
Vehicles with tilt/sliding panel*
If roller sunblinds are closed:
Press and hold buttonŒon the
SmartKey or SmartKey with
KEYLESS-GO*.
The windows and roller sunblinds begin
to open after approximately 1 second.
Release buttonŒon the SmartKey
or SmartKey with KEYLESS-GO* to
interrupt the opening procedure.
With the windows and roller sunblinds
fully opened, press and hold
buttonŒon the SmartKey or
SmartKey with KEYLESS-GO* once
more.
The tilt/sliding panel opens.
Release buttonŒon the SmartKey
or SmartKey with KEYLESS-GO* to
interrupt the opening procedure.If roller sunblinds are open:
Press and hold buttonŒon the
SmartKey or SmartKey with
KEYLESS-GO*.
The windows and the tilt/sliding panel
begin to open after approximately
1 second.
Release buttonŒon the SmartKey
or SmartKey with KEYLESS-GO* to
interrupt the opening procedure.
Convenience closing feature
When locking the vehicle, you can simulta-
neously close

the door windows

the hinged quarter windows*

the tilt/sliding sunroof* (or the
tilt/sliding panel*)
Warning!G
When closing the windows and the
tilt/sliding sunroof* (or tilt/sliding panel*),
make sure that there is no danger of anyone
being harmed by the closing procedure.
If potential danger exists, proceed as
follows:

Release button‹to stop the closing
procedure. To open, press and hold
button Œ. To continue the closing
procedure after making sure that there
is no danger of anyone being harmed by
the closing procedure, press and hold
button ‹.


248 Controls in detail
Power tilt/sliding sunroof*
Opening and closing
Warning!G
When closing the tilt/sliding sunroof, make
sure that there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof encounters an
obstruction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately
halted by releasing the switch or, if the
switch was moved past the resistance point
and released, by moving the switch in any
direction.
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 prop-
erly as entire body parts or portions of them
may protrude from the passenger compart-
ment.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.!To avoid damaging the seals, do not trans-
port 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.
!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.
iWhen 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 compart-
ment. To reduce or eliminate theses noises,
change the position of the tilt/sliding sunroof or
open a door window slightly.

250 Controls in detail
Power tilt/sliding sunroof*
Fully opening (Express-open) and
closing (Express-close)
To fully open or close the tilt/sliding
sunroof, move the sunroof switch past
the resistance point in the required
direction1or2 (
page 249) and
release.
The tilt/sliding sunroof opens or closes
completely.
Stopping the power tilt/sliding sunroof
during Express-open
Move the sunroof switch in any
direction.
The movement of the tilt/sliding
sunroof stops.
Synchronizing
The tilt/sliding sunroof must be
synchronized

after the battery has been
disconnected or discharged

after a malfunction

if the tilt/sliding sunroof does not open
smoothly
iIf the movement of the tilt/sliding sunroof is
blocked during the closing procedure, the
tilt/sliding sunroof will stop and reopen slightly.
Warning!G
If the tilt/sliding sunroof encounters an
obstruction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately
halted by releasing the switch or, if the
switch was moved past the resistance point
and released, by moving the switch in any
direction.
!If the tilt/sliding sunroof cannot be closed
or synchronized, contact an authorized
Mercedes-Benz Light Truck Center or call
Roadside Assistance (
page 325).