219 Controls in detail
Climate control
The climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the
automatic or manual mode. The system
cools or heats the interior depending on
the selected interior temperature and the
current 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 A/C mode is deactivated
(
page 227).
Warning!
G
When operating the 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 frostbite to unpro-
tected skin in the immediate area of the air
vents.
Always keep sufficient distance between un-
protected parts of the body and the air
vents. If necessary, use the air distribution
controls (
page 218) to direct the air to air
vents in the vehicle interior that are not in
the immediate area of unprotected skin.
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.
iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the fil-
ter 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 feature”
(page 251). The climate control will
then adjust the interior temperature to
the set value much faster.
Keep the air intake grille in front of the
windshield free of snow and debris.
226 Controls in detailClimate controlDeactivating
Press button:.
The indicator lamp on the button goes
out.
Air conditioning
The air conditioning is operational while
the engine is running and cools the interior
air to the temperature set by the operator.
In addition, the air conditioning dehumidi-
fies the interior air at outside temperatures
above 41°F (5° C) and helps prevent
window fogging.
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 condition-
ing and air-drying is turned off
after 30 minutes if the outside
temperature is above
approximately 41°F (5°C)
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.
234 Controls in detail3-zone automatic climate control*
Deactivating the climate control system
Deactivating
Press button´ (
page 232) until
the display is cleared.Reactivating
Press buttonU(
page 232).
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.iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the fil-
ter 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 feature”
(page 251). The automatic climate
control will then adjust the interior
temperature to the set value much fast-
er.
Keep the air intake grille in front of the
windshield free of snow and debris.
Warning!
G
When the automatic climate control is
switched off, the outside air supply and cir-
culation 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 232) on the automatic climate
control panel.
If you press button0 (
page 232)
to reactivate the automatic climate
control system, the defrosting mode is
activated.
235 Controls in detail
3-zone automatic climate control*
Deactivating the rear automatic
climate control
You can switch on and off the rear auto-
matic climate control with the automatic
climate control panel in the front.
Deactivating
Press button> (
page 232).
The indicator lamp on the button
comes on.
In displaye (
page 232), you will see
the >symbol followed by
MODE
for
approximately 3 seconds.
Press button´ (
page 232).
In displaye (
page 232), you will see
the >symbol followed by
OFF
.
The rear automatic climate control is
switched off.Reactivating
Press button> (
page 232).
The indicator lamp on button>
comes on.
In displaye (
page 232), 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.
For more information on rear air condition-
ing, see “Rear automatic climate control”
(
page 244).Operating the climate control system
in automatic mode
You can switch the automatic climate con-
trol system on and off separately for each
zone as needed.
Activating
Press buttonU (
page 232) while
the engine is running.
AUTO appears in the display of control
panele (
page 232). Air volume and
air distribution are controlled separate-
ly for each zone.
iYou can switch on and off the rear au-
tomatic climate control by pressing the
respective button on the rear climate
control panel (
page 244).
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
In automatic mode, cooling with dehu-
midify is switched on. This function can
be switched off if necessary.
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.
279 Controls in detail
Loading
Loading
Roof rack*
1Trim cover
Flip roof trim covers 1 open.
Attach the roof rack to the attachment
points under roof trim covers 1.
Follow roof rack manufacturer’s instal-
lation instructions.
For further information, inquire at your
Mercedes-Benz Light Truck Center.
Warning!
G
Only use the roof rack when the basic carri-
er bars have been completely mounted. The
left and right rails are only stabilized by
means of the basic carriers being mounted.
Follow the manufacturer’s installation
instructions. Otherwise, an improperly
attached roof rack system or its load could
become detached from the vehicle.
Do not exceed the maximum roof load of
220 lb (100 kg).
Take into consideration that when the roof
rack is loaded, the handling characteristics
are different from those when operating the
vehicles without the roof rack loaded.
!Use only those roof racks approved by
Mercedes-Benz for your vehicle model.
Follow manufacturer’s installation in-
structions. The vehicle could otherwise
be damaged.
When loading the roof rack, make sure
the tilt/sliding sunroof* (or
tilt/sliding panel*) can be com-
pletely raised at the rear
the tilt/sliding panel and the tail-
gate can be completely opened
312 Controls in detailUseful featurestrol counterclockwise or press
buttonç on the multifunction steering
wheel.
To activate, press the SOS button, the
Roadside Assistance button• or
the Information button¡, depend-
ing on the type of response required.System self-check
Initially, after switching on the ignition,
malfunctions are detected and indicated
(the indicator lamps in the SOS button, the
Roadside Assistance button• and the
Information button¡ stay on longer
than 10 seconds or do not come on). The
message
Malfunction. Drive to work-
shop
appears in the multifunction display.
iThe SOS button is located in the over-
head control panel.
The Roadside Assistance button•
and the Information button¡ are
located below the center armrest
cover.!The Tele Aid system utilizes the cellular
network for communication and the
GPS (G
lobal P
ositioning S
ystem) satel-
lites for vehicle location. If either of
these signals are unavailable, the
Tele Aid system may not function and if
this occurs, assistance must be sum-
moned by other means.
iWhen a Tele Aid call has been initiated,
the Modular COMAND System audio is
muted and the selected mode (radio,
CD etc.) pauses. The optional cellular
phone (if installed) inserted in cradle
switches off. If you must use this
phone, we recommend that you use it
only with the vehicle at a standstill in a
safe location. Remove the phone from
the cradle and place the call. The navi-
gation* system (if engaged) will contin-
ue to run. The display in the instrument
cluster is available for use, and spoken
commands are only available by press-
ing the RPT button on the Modular
COMAND System. A pop-up window
will appear in the Modular COMAND
System display to indicate that a Tele
Aid call is in progress. After the Tele Aid
call has ended, the optional cellular
phone inserted in the cradle switches
on again. A PIN entry might be neces-
sary.
315 Controls in detail
Useful features
Roadside Assistance button•
The Roadside Assistance button• is
located below the center armrest cover.
1Roadside Assistance button•
Open the storage tray (
page 296).
Press and hold button1 (for longer
than 2 seconds).
A call to a Mercedes-Benz Roadside
Assistance dispatcher will be initiated.
The button will flash while the call is in
progress. The message Connecting call
will appear in the
multifunction display.When the connection is established, the
message
Call connected
appears in the
multifunction display. The Tele Aid system
will transmit data generating the vehicle
identification number, model, color and
location (subject to availability of cellular
and GPS signals).
A voice connection between the Roadside
Assistance dispatcher and the occupants
of the vehicle will be established.
Describe the nature of the need for as-
sistance.
Warning!
G
If you feel at any way in jeopardy when in the
vehicle (e.g. smoke or fire in the vehicle,
vehicle in a dangerous road location), please
do not wait for voice contact after you have
pressed the emergency button. Carefully
leave the vehicle and move to a safe loca-
tion. The Response Center will automatically
contact local emergency officials with the
vehicle’s approximate location if they re-
ceive an automatic SOS signal and cannot
make voice contact with the vehicle occu-
pants.
iWhile the call is connected you can
change to the navigation menu by
pressing NAV button on the Modular
COMAND System unit.