Mercedes-Benz ML320. Manual — part 78

139

Controls in detail

Automatic climate control

Activating

왘

Press button

Ä (

컄

page 135).

The indicator lamp on the button
comes on.

Deactivating

왘

Press button

Ä (

컄

page 135).

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.

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.

왘

Press button

° (

컄

page 135).

The indicator lamp on the button

°

comes on.

Activating

Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.

왘

Press button

° again.

The indicator lamp on the button

°

goes out.

The air conditioning system uses the refrig-
erant R-134a. This refrigerant is free of
CFCs which are harmful to the ozone layer.

i

To achieve the fastest possible cooling
of the interior, the automatic climate
control automatically switches to air
recirculation. The indicator lamp in the
button

Ä is not illuminated when

the system automatically switches to
air recirculation.

i

The air recirculation mode is
deactivated automatically

앫

after 30 minutes if the automatic
climate control is switched on

앫

after five minutes if the air condi-
tioning is switched off

앫

after five minutes if the outside
temperature is above approximate-
ly 45°F (7°C)

i

Condensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.

140

Controls in detail

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

왘

Turn the key in the steering lock to
position 0 or 1 (

컄

page 33).

왘

Press button

° (

컄

page 135).

The indicator lamp on button

°

comes on.

Deactivating

왘

Press button

°.

The indicator lamp on button

°

goes out.

!

If the

° button on the automatic

climate control panel starts to flash,
this indicates that the air conditioning
system is losing refrigerant. The com-
pressor has turned itself off. The air
conditioning cannot be turned on
again.

Have the air conditioning system
checked at the nearest authorized
Mercedes-Benz Light Truck Center.

i

How long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set in the
climate control. The blower will run at
lower speed regardless of the air vol-
ume control setting.

i

The residual heat is automatically
turned off:

앫

when the ignition is switched on

앫

after about 30 minutes

앫

if the coolant temperature is too
low

앫

if the battery voltage drops

141

Controls in detail

Automatic climate control

Rear passenger compartment ventila-
tion and rear automatic climate control

Deactivating

For an improved cooling or heating output
in the front passenger compartment, you
can switch off the rear passenger compart-
ment ventilation.

왘

Press button

§ (

컄

page 135).

The indicator lamp on the button
comes on.

The operation of the rear automatic
climate control and the fresh air supply
to the rear compartment is shut off.

Activating

왘

Press button

§ again.

The indicator lamp on the button goes
out.

The rear automatic climate control
switches to automatic mode and fresh
air enters the rear compartment.

Automatic mode

The automatic climate control panel for the
rear is located on the rear center console.

1 Air volume control
2 Air distribution control
3 Automatic control (air distribution, air

volume)

왘

Press button

U.

The indicator lamp on the button
comes on.

The automatic climate control cools or
heats the interior depending on the
temperature selected on the front
climate control unit.

Adjusting air volume and air distribu-
tion manually

Adjusting air volume

왘

Press upper part of button

R.

The blower setting is increased each
time the button is pressed.

왘

Press lower part of button

R.

The blower setting is decreased each
time the button is pressed.

i

When the air volume or air distribution
control is pressed, the automatic mode
is switched off. The indicator lamp in
button

U is turned off. Temperature

setting remains in automatic mode.

컄컄

142

Controls in detail

Automatic climate control

Adjusting air distribution

왘

Press upper part of button

Ô.

Air is directed upwards.

왘

Press lower part of button

Ó.

Air is directed to the footwell.

Front and rear air vents

Adjusting side air vents

왘

Turn thumbwheel 4 (

컄

page 135) to

one of the following positions:

!

When in manual mode, the rear blower
setting cannot be increased beyond
the setting for the front blower setting.
For example, if the driver or front pas-
senger changes the blower setting to
level 3, the rear blower will not go high-
er than level 3 as well.

i

For draft-free ventilation, adjust the air
vents upwards.

To allow unrestricted operation of the
automatic climate control, the air vents
should remain open.

Symbol

Function

h

Open

l

Ventilation of side
windows in area of
exterior mirror

M

Closed

컄컄