2003 MERCEDES-BENZ ML55AMG Owner's Manual

129 Controls in detail
Automatic climate control
Activating
Press button
O
(page 125).
The indicator lamp on the button lights
up.
Deactivating

Press button
O
(page 125).
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.
Press button
°
(page 125).
The indicator lamp on the button
°

lights up.
iTo achieve the fastest possible cooling
of the interior, the automatic climate
control automatically switches to air
recirculation. The indicator lamp in the
button
O
is not illuminated when
the system automatically switches to
air recirculation.
iThe air recirculation mode is activated
automatically after

30 minutes if the automatic climate
control is switched on


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


after five minutes if the outside
temperature is above approximate-
ly 45°F (7 °C)
iCondensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.

130 Controls in detailAutomatic climate controlActivating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
Press button
°
again.
The indicator lamp on the button
°

goes out.
The air conditioning system uses the refrig-
erant R134A. This refrigerant is free of
CFCs which are harmful to the ozone layer.
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
Turn the key in the steering lock to
position1.

Press button
°
(page 125).
The indicator lamp on button
°

comes on.Deactivating

Press button
°
.
The indicator lamp on button
°

goes out.
!If the
°
button on the automatic cli-
mate control panel starts to blink, this
indicates that the air conditioning sys-
tem is losing refrigerant. The compres-
sor 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.
iHow 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.
iThe 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

131 Controls in detail
Automatic climate control
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Activating
Switch ignition on.

Press button
F
(page 125).
The indicator lamp on the button lights
up.
Deactivating

Press button
F
again.
The indicator lamp on the button goes
out.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.
Press button
§
(page 125).
The indicator lamp on the button lights
up.
The operation of the rear automatic cli-
mate control and the fresh air supply to
the rear compartment is shut off.
Activating

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.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.!If the rear window defroster switches
off too soon and the indicator lamp
starts blinking, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.

132 Controls in detailAutomatic climate controlAutomatic mode
The automatic climate control panel for the
rear is located on the rear center console.
1Air volume control
2Air distribution control
3Automatic control (air distribution, air
volume)
Press button
U
.
The indicator lamp on the button lights
up.
The automatic climate control cools or
heats the interior depending on the
temperature selected on the front cli-
mate control unit.Adjusting air volume and air distribu-
tion manually
Adjusting air volume

Press upper part of button
R
.
The blower setting is increased each
time the button is pressed.

Press lower part of button
R
.
The blower setting is decreased each
time the button is pressed.Adjusting air distribution

Press
Ô
, upper part of button2.
Air is directed upwards.

Press
Ó
, lower part of button2.
Air is directed to the footwell.
Front and rear air outlets
iWhen 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.
iFor draft-free ventilation, adjust the air
outlets upwards
To allow unrestricted operation of the
automatic climate control, the air out-
lets should remain open.

133 Controls in detail
Automatic climate control
Adjusting side air outlets
Turn thumbwheel4 (
page 125), to
one of the following positions:Center air outlets
Opening

Turn thumbwheel center air outlet 1
(page 125) upward to position
h
.
Closing

Turn thumbwheel center air outlet 1
downward to position
M
.
Use the left thumbwheel to adjust the cen-
ter air outlets on the left and in the center.
Use the right thumbwheel to adjust the
right center air outlet.Rear passenger compartment air out-
lets
1Adjustable center air outlet, left
2Adjustable center air outlet, right
Symbol
Function
h
Open
l

Ventilation of side win-
dows in area of exterior
mirror
M
Closed
iThe temperature at the air outlets for
the rear passenger compartment is the
same as at the dashboard center air
outlets.

134 Controls in detailPower windows
Power windowsOpening and closing the side windows
The power window switches are on the
front center console.
1Left front
2Right front
3Switch for rear door window override
(
page 69)
4Left rear
5Right rear Additional switches for the rear windows
are located on the rear center console.
6Left rear
7Right rear
To operate the power windows, turn key to
position2 (
page 33) in the steering lock.
Warning!
G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
When leaving the vehicle, always remove the
key from steering lock and lock your vehicle.
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Unsupervised use of vehicle equipment may
cause an accident and/or serious personal
injury.

135 Controls in detail
Power windows
Opening the windows
Press switch
k
to resistance point.
The window will move downwards until
you release the switch.
Closing the windows

Press switch
j
to resistance point.
The window will move upwards until
you release the switch.
Fully opening the windows

Press switch
k
past the point of re-
sistance and release.Fully closing the windows

Press switch
j
past the point of re-
sistance and release.
Stopping the windows

Briefly press switch
k
or
j
.
!If the side window is blocked in the up-
per area, the closing process is inter-
rupted and the window reopens
slightly.
Remove the obstruction, press switch j
past the point of resistance again
and release.
If the window still does not close
without an object having been trapped,
then hold the
j
switch down. The
side window will then close without the
obstruction sensor function.
iIf the driver’s window cannot be auto-
matically closed without an object
having been trapped, press the
j

switch past the point of resistance
again within five seconds and release.
The side windows will now close with-
out the obstruction sensor function.
Warning!
G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.

136 Controls in detailPower windowsSynchronizing power windows
The side power windows must be resyn-
chronized

after the battery has been disconnect-
ed


if the windows cannot be fully opened
or closed

Switch ignition on.

Press switch
j
until the window is
completely closed and hold down for
approximately 1 second. Repeat proce-
dure for each window.
Rear quarter windows*
The switches are on the upper part of the
center console.
1Left side
2Right side
To operate the power windows, turn key to
position2 (
page 33) in the steering lock.Opening the windows

Press and hold the upper part of
switches1 or2.
The window will open.
Closing the windows

Press and hold the lower part of
switches1 or2.
The window will close.Warning!
G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
When leaving the vehicle, always remove the
key from the steering lock, and lock the ve-
hicle. Do not leave children unattended in
the vehicle, or with access to an unlocked
vehicle. Unsupervised use of vehicle equip-
ment may cause an accident and/or serious
personal injury.