218 Controls in detailClimate controlActivating rear climate control
Press buttonU.
The indicator lamp on the button
comes on. The air volume and air distri-
bution are adjusted automatically.Deactivating rear climate control
Press button´.
The indicator lamp on the button
comes on.
The cooling function switches off after
a short delay.Operating from the front
Deactivating
Press button: on the front climate
control panel (
page 208).
The indicator lamp on the button
comes on.
Reactivating
Press button: on the front climate
control panel (
page 208).
The indicator lamp on the button goes
out. The rear climate control is adjust-
ed automatically.
i
The climate control must be switched on
(
page 218).
i
The temperature is adjusted according to
the settings for the front passenger side made
on the front climate control panel (
page 211).
i
Switch off the rear climate control for im-
proved cooling or heating output in the front pas-
senger compartment.
You can also switch off the rear climate control
from the front passenger compartment
(
page 218).
227 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 222) to the desired level.
The indicator lamp on buttonU
goes out.
The AUTO
display disappears in the
displaye (
page 222) and the auto-
matic mode is switched off. The select-
ed blower speed appears in the
displaye (page 222).
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 222).
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 222).
The indicator lamp on the button goes
out. Defrosting is turned off.
The previous settings are once again in
effect.
i
Keep 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.
i
To switch off, you can also press
button´ orU (
page 222).
232 Controls in detail3-zone automatic climate control*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 39).
Press button9 (
page 222).
The indicator lamp on the button
comes on.
Deactivating
Press button9.
The indicator lamp on the button goes
out.
Rear automatic climate control
The control panel is located at the rear of
the front center console.
i
How long the system will provide heating
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.
i
The 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
233 Controls in detail
3-zone automatic climate control*
Activating rear automatic climate
control
Press buttonU.
The indicator lamp on the button
comes on. The temperature, air vol-
ume, and air distribution are adjusted
automatically.
Deactivating rear automatic climate
control
Press button´.
The indicator lamp on the button goes
out.
The cooling function switches off after
a short delay.Operating from the front
Deactivating
Press button> (
page 222).
The indicator lamp on the button goes
out.
In displaye (
page 222), you will see
the> symbol followed by
MODE
for
approximately 3 seconds.
Press button´ (
page 222).
In displaye (
page 222), you will see
the> symbol followed by
OFF
.
The rear automatic climate control is
switched off.
1
Left rear center air vent, adjustable
2
Right rear center air vent, adjustable
3
Temperature control
4
Air distribution and air volume
(automatic, manual)
5
Air distribution (directs air through
the center air vents)
6
Air distribution (directs air through
the footwells and side air vents)
7
Rear automatic climate control
on/off
8
Decreasing air volume
9
Indicator lamps for air volume
settings
a
Increasing air volume
i
The automatic climate control must be
switched on (
page 224).
i
Switch off the rear automatic climate con-
trol for improved cooling or heating output in the
front passenger compartment.
You can also switch off the rear automatic
climate control from the front passenger com-
partment (
page 222).
301 Controls in detail
Useful features
Opening rear ashtray
Briefly press ashtray cover2.
The ashtray1 opens automatically.
Removing rear ashtray insert
Grip the insert on the sides and pull it
out upwards.
Reinstalling rear ashtray insert
Install ashtray insert.
Close the ashtray.
Cigarette lighter
Switch on the ignition (
page 40).
Push in cigarette lighter.
The cigarette lighter will pop out auto-
matically when hot.
Cigarette lighter*
Switch on the ignition (
page 40).1Cigarette lighter
Open the ashtray (
page 300).
Push in cigarette lighter1.
The cigarette lighter will pop out auto-
matically when hot.
Warning!
G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
Make sure that any children traveling with
you do not injure themselves or start a fire
with the hot cigarette lighter.
When leaving the vehicle always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the 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 may cause an accident
and/or serious personal injury.
302 Controls in detailUseful features
Power outletsPower outlets are located
in the front center console
(page 302)
in the rear center console (
page 303)
on the right-hand side of the cargo
compartment (
page 303)
Power outlet in front center console
1Power outlet cover
Switch on the ignition (
page 40).
Open cover plate (
page 296).
Pull out cover1 and insert electrical
plug (cigarette lighter type).
!
The lighter socket can accommodate
12V DC electrical accessories (up to a maximum
of 180 W) designed for use with the standard
“cigarette lighter” plug type. Keep in mind, how-
ever, that connecting accessories to the lighter
socket (for example extensive connecting and
disconnecting, or using plugs that do not fit prop-
erly) can damage the lighter socket. With the
socket damaged, the lighter may no longer be
able to be placed in the heating (pushed-in) posi-
tion, or the lighter may pop out too early with the
lighter not hot enough.
To help avoid damaging the cigarette lighter
socket, we recommend connecting 12V DC elec-
trical accessories designed for use with the stan-
dard “cigarette lighter” plug type to the 12V
power outlets (
page 302) in your vehicle
whenever possible.
i
If the engine is off, and the cigarette lighter
is being used extensively, the vehicle battery
may become discharged.
!
If you use all power outlets in the vehicle,
make sure that the maximum current drawn
does not exceed 55 A.
i
The power outlets can be used to
accommodate 12V DC electrical accessories
(e.g. air pump, auxiliary lamps) up to a maximum
of 240 W.
If the engine is off, the battery may become dis-
charged if used for long periods of time.
i
You can use the power outlet in the cargo
compartment or in the front of the rear seats
even if the ignition is switched off.
An emergency shut-off feature ensures that the
vehicle’s electrical voltage does not fall below a
minimum level. If the voltage drops to this mini-
mum level, the power outlets are automatically
switched off. This ensures that enough power re-
mains to start the engine.
304 Controls in detailUseful features1Retainer pin
2Eyelet
Removing
Pull floormat off of retainer pins1.
Remove the floormat.
Installing
Lay down the floormat in the respective
footwell.
Press the floormat eyelets2 onto re-
tainer pins1.
Heated steering wheel*
The steering wheel heating warms up the
leather area of the steering wheel.
The stalk is on the lower left-hand side of
the steering wheel.
1Switching on
2Indicator lamp
3Switching offSwitching on
Switch on the ignition (
page 40).
Turn switch at the tip of stalk in the
direction of arrow1.
The steering wheel is heated. Indicator
lamp2 comes on.
i
The steering wheel heating is turned off tem-
porarily and the indicator lamp2 remains on
when
the temperature of the vehicle interior is
above 86°F (30°C)
the temperature of the steering wheel is
above 95°F (35°C)
When these conditions do not apply anymore,
steering wheel heating continues.
305 Controls in detail
Useful features
Switching off
Turn switch at the tip of stalk in the
direction of arrow3.
The heated steering wheel is switched
off. Indicator lamp2 goes out.
For information on the steering wheel, see
“Multifunction steering wheel”
(
page 148).
Telephone*
Radio transmitters, such as a portable tele-
phone or a citizens band unit, should only
be used inside the vehicle if they are con-
nected to an antenna that is installed on
the outside of the vehicle.
The external antenna must be approved by
Mercedes-Benz. Please contact an autho-
rized Mercedes-Benz Light Truck Center
for information on the installation of an ap-
proved external antenna. Refer to the radio
transmitter operation instructions regard-
ing use of an external antenna.
i
Indicator lamp2 flashes or goes out
in case of power surge or undervoltage
in case of a steering wheel heating malfunc-
tion
i
The steering wheel heating switches off
automatically when you remove the SmartKey
from the starter switch or, on vehicles with
KEYLESS-GO*, when you switch off the ignition
(
page 39) and open the driver’s door.
Warning!
G
Never operate radio transmitters equipped
with a built-in or attached antenna (i.e. with-
out being connected to an external antenna)
from inside the vehicle while the engine is
running. Doing so could lead to a malfunc-
tion of the vehicle’s electronic system, pos-
sibly resulting in an accident and/or serious
personal injury.
Warning!
G
Please do not forget that your primary re-
sponsibility is to drive the vehicle. A driver’s
attention to the road must always be
his /her primary focus when driving. For
your safety and the safety of others, we rec-
ommend that you pull over to a safe location
and stop before placing or taking a tele-
phone call.
If you choose to use the telephone
1 while
driving, please use the hands-free device
and only use the telephone when road,
weather and traffic conditions permit. Some
jurisdictions prohibit the driver from using a
cellular telephone while driving a vehicle.
Only operate the COMAND system1 if road,
weather and traffic conditions permit.
Bear in mind that at a speed of just 30 mph
(approximately 50 km/h), your vehicle is
covering a distance of 44 feet (approximate-
ly 14 m) every second.
1Observe all legal requirements