Page 158 of 376

158 Controls in detailClimate controlThe climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the au-
tomatic or manual mode. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the AC
OFF
mode is selected
(
page 162).
Setting the temperature
Use temperature controls2 and3 to
separately adjust the air temperature on
each side of the passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C).
Warning!
G
When operating the automatic climate con-
trol, the air that enters the passenger com-
partment through the air vents in the
footwell can be very hot or very cold (de-
pending on the set temperature). This may
cause burns or frostbite on unprotected skin
in the immediate area of the air vents. Al-
ways keep sufficient distance between un-
protected parts of the body and the footwell
air vents. If necessary, change the air flow
using the air distribution controls to direct
the air away from the footwell air vents
(page 159).
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iIf the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
Page 159 of 376
159 Controls in detail
Climate control
Increasing
Turn the temperature control a few de-
grees to the right.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Decreasing
Turn the temperature control a few de-
grees to the left.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Adjusting air distribution and volume
Use air distribution control4
(page 157) to adjust the air distribution.
The following symbols are found on the
controls:Adjusting manually
Press theU button.
The indicator lamp on the button goes
out.
Select any of the six air volume speeds
and the air distribution.
Symbol
Function
a
Directs air through the center,
side and rear passenger com-
partment air vents
Z
Directs air to the windows
X
Directs air into the entire vehi-
cle interior
Y
Directs air to the footwells
Page 160 of 376

160 Controls in detailClimate controlAdjusting automatically
Press theU button.
The indicator lamp on the button
comes on. Air distribution and volume
are adjusted automatically.
Windshield fogged on the outside
Switch the windshield wipers on.
Switch to manual mode.
Turn the air distribution control
toa orY.
Defrosting
Activating
Press button P.
The indicator lamp in the button illumi-
nates.
The climate control automatically
switches to the following functions:
maximum blower and heat output
air distribution to the windshield
and the side windows
rear ventilation is turned off
Deactivating
Press the P button.
The indicator lamp in the button goes
out. Defrosting is turned off.
Air recirculation
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside. This setting cuts off the
intake of outside air and recirculates the
air in the passenger compartment.
Activating
Press button O briefly.
The indicator lamp in the button illumi-
nates.Warning!
G
When the outside temperature is below
41°F (5°C), only switch to air recirculation
mode for short periods to prevent window
fogging.
Page 162 of 376

162 Controls in detailClimate controlDeactivating the climate control system
Deactivating
Set the air volume control switch to
position0.
Reactivating
Set the air volume control switch to any
speed.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
Deactivating
It is possible to deactivate the air condi-
tioning (cooling) function of the climate
control system. The air in the vehicle will
then no longer be cooled or dehumidified.
Press button°.
The indicator lamp on the button°
comes on.Activating
Moist air can fog up the windows. You can
dehumidify the air with the air conditioner.
Press button° again.
The indicator lamp on the button°
goes out.
The air conditioner uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!If the° button on the climate con-
trol panel starts to blink, this indicates
that the air conditioner is losing refrig-
erant. The compressor has turned itself
off. The air conditioner cannot be
turned on again.
Have the air conditioner checked at
the nearest authorized
Mercedes-Benz Light Truck Center.
Page 164 of 376

164 Controls in detailPower windows
Power windowsOpening and closing the windows
The side windows can be opened and
closed electrically. The switches for all the
side windows are on the driver’s door. The
switches for the respective windows are
on the front passenger and the rear doors.
1Switch for rear door window override
(
page 71)
2Left front window
3Right front window
4Right rear window
5Left rear window
Turn SmartKey in the starter switch to
position1 or2.Opening the windows
Press switch 2 to 5 to the resistance
point.
The corresponding window will move
downwards until you release the
switch.
Closing the windows
Pull on switch 2 to 5.
The corresponding window will move
upwards until you release the switch.
Fully opening windows (Express-open)
Press switch 2 to 5 past the resis-
tance point and release.
The corresponding window opens com-
pletely.
Stopping windows
Press or pull respective switch again.
Warning!
G
When closing the windows, make sure there
is no danger of anyone being harmed by the
closing procedure.
The closing procedure can be immediately
halted by releasing the switch or by releas-
ing button‹ on the SmartKey.
When leaving the vehicle, always remove the
SmartKey from starter switch, and lock your
vehicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment can cause an accident and/or serious
personal injury.
Page 165 of 376

165 Controls in detail
Power windows
Opening and closing windows with the
SmartKey
The sliding/pop-up roof (
page 166) will
also be opened or closed when the power
windows are operated with the SmartKey.
Aim transmitter eye at the driver’s door
handle.Opening (Summer opening feature)
Press and hold buttonŒ after un-
locking the vehicle.
The windows and sliding/pop-up roof
begin to open after approximately one
second.
Release transmit button to interrupt
procedure.Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and sliding/pop-up roof
begin to close after approximately one
second.
Release transmit button to interrupt
procedure.
Make sure all side windows and the slid-
ing/pop-up roof are properly closed before
leaving the vehicle.
Warning!
G
Never operate the windows or slid-
ing/pop-up roof if there is the possibility of
anyone being harmed by the opening or
closing procedure.
In case the procedure causes potential dan-
ger, the procedure can be immediately halt-
ed by releasing the button on the SmartKey.
To reverse direction of movement,
pressŒ for opening or ‹ for closing.
Page 167 of 376

167 Controls in detail
Sliding/pop-up roof
Opening and closing the sliding/pop-up
roof
To open, close, raise or lower the slid-
ing/pop-up roof, move the switch to
the resistance point in the required
direction1to4.
Release the switch when the roof has
reached the required position.Fully opening (Express-open)
To open the sliding/pop-up roof, move
the switch past the resistance point in
direction4 and release.
The sliding/pop up roof opens com-
pletely.
Stopping the sliding / pop-up roof
Move the switch in any direction.Opening and closing the sliding/pop-up
roof with the SmartKey
The power windows (
page 164) will also
be opened or closed when you operate the
sliding/pop-up roof with the SmartKey.
Aim transmitter eye at the driver’s door
handle.
iIf the movement of the sliding/pop-up
roof is blocked during the closing pro-
cedure, the roof will stop and reopen
slightly.
Warning!
G
Never operate the windows or slid-
ing/pop-up roof if there is the possibility of
anyone being harmed by the opening or
closing procedure.
In case the procedure causes potential dan-
ger, the procedure can be immediately halt-
ed by releasing the button on the SmartKey.
To reverse direction of movement,
pressŒ for opening or ‹ for closing.
Page 168 of 376
168 Controls in detailSliding/pop-up roofOpening (Summer opening feature)
Press and hold buttonŒ after un-
locking the vehicle.
The windows and sliding/pop-up roof
begin to open after approximately one
second.
Release transmit button to interrupt
procedure.Closing (Convenience feature)
Press and hold button‹ after lock-
ing the vehicle.
The windows and sliding/pop-up roof
begin to close after approximately one
second.
Release transmit button to interrupt
procedure.
Make sure all side windows and the slid-
ing/pop-up roof are properly closed before
leaving the vehicle.