2002 MERCEDES-BENZ ML320 Driving

116 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Air recirculation
This mode can be selected to temporarily reduce the
entry of annoying odors or dust into the vehicle’s
interior.
Outside air is not supplied to the vehicles’s interior.
To select, press briefly O button. The indicator lamp
in button lights up.
To cancel, press briefly O button again. The indicator
lamp in button goes out.
The system automatically switches from air
recirculation to fresh air, after:
•approx. 30 minutes, when the automatic climate
control switched on,
•approx. 5 minutes, when the automatic climate
control switched off.
•approx. 5 minutes, if the outside temperature is
below 45˚F (7˚C).
If the windows should fog up from the inside, switch
from recirculated air back to fresh air.Note:
To achieve the fastest possible cooling of the interior, the
automatic climate control automatically switches to air
recirculation.
The indicator lamp in the Obutton is not illuminated
when the system automatically switches to air
recirculation.

117 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Economy mode
The function of this setting corresponds to the
automatic mode. However, because the air conditioning
compressor will not engage (fuel savings), it is not
possible to air condition in this setting.
Press AC
OFF
button to activate. The indicator lamp in the
button illuminates.
Press AC
OFF
button once again to return to the previous
setting.
Important!
In the mode AC
OFF
the windows could fog up on the
inside. Switch off ACOFF
mode.Residual engine heat utilization
With the engine switched off, it is possible to continue
to heat or ventilate the interior for a short while,
dependent of the temperature set in the climate control.
Air volume and distribution are controlled
automatically.
To s e l e c t :
Turn the key in steering lock to position 1.
Press buttonT. The indicator lamp in the button
illuminates.
To s w i tch o f f :
Press buttonT. The indicator lamp in the button
goes out.
This function selection is automatically switched off,
•if turning the key in steering lock to position 2,
•after approx. 30 minutes,
•if the coolant temperature is too low and
•if the battery voltage drops.
Note:
The fan switches to a lower speed independent of the
setting of the air volume control.

118 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Switching the automatic climate control on and off
To s witch of f:
Set air volume control wheel to position0.
The indicator lamp in the Ubutton goes out.
The fresh air supply to the vehicle interior is shut off.
While driving, use this setting only temporarily,
otherwise the windshield could fog up.
To s witch on:
Press the Ubutton. The indicator lamp in the button
illuminates.Switching off the rear passenger compartment
ventilation and rear passenger climate control
For an improved cooling or heating output in the front
passenger compartment, the rear passenger
compartment ventilation can be switched off.
To s w i tch o f f :
Press the REAR-OFF button, see page 110. The indicator
lamp in the button illuminates.
The operation of the rear automatic climate control in
the center console and the fresh air supply to the rear
compartment is shut off.
To a c t i va t e :
Press REAR-OFF button again. The indicator lamp in the
button goes out.
The rear automatic climate control in the center console
switches to automatic mode and fresh air enters the rear
compartment.
For notes on the rear passenger compartment climate
control, see page 119.

119 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear passenger compartment climate control
The climate control is located on the rear center console.
1Air volume switch
2Air distribution switch
3Automatic mode AUTO
Automatic control of air distribution and air volumeNote:
In the automatic mode, the automatic climate control
cools or heats the interior depending on the
temperature selected on the front climate control unit.
With the automatic mode switched off, the air volume
and distribution can still be set manually. The
temperature setting remains in the automatic mode.
Manual setting of air volume and air distribution in
the rear passenger compartment
To switch off the automatic mode press air volume
switch (1) or air distribution switch (2).
Air volume and distribution can be selected manually.
The indicator lamp in Ubutton goes out.
Air distribution manual:
jAir distribution up.
kAir distribution down.
To return to automatic mode:
Press Ubutton. The indicator lamp in the button
illuminates
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120 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Rear passenger compartment adjustable air outlets
1Adjustable rear center air outlet, left
2Adjustable rear center air outlet, rightNotes:
The temperature at the air outlets for the rear passenger
compartment is the same as at the dashboard center air
outlets.
To achieve draft free ventilation of the rear
compartment, point the air nozzles upwards.
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121 Automatic climate control
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Rear window defroster
Turn the key in steering lock to position 2.
To select:
Press the Fbutton in the control panel of the
automatic air conditioner. The indicator lamp in the
button illuminates.
To c a nc el:
Press the Fbutton in the control panel of the
automatic air conditioner. The indicator lamp in the
button goes out.
Notes:
Heavy accumulation of snow and ice should be removed
before activating the defroster. The rear window defroster uses a large amount of power.
To keep the battery drain to a minimum, turn off the
defroster as soon as the rear window is clear.
The defroster is automatically turned off after
approximately 6–17 minutes of operation depending on
the outside temperature and vehicle speed.
If several power consumers are turned on
simultaneously, or the battery is only partially charged,
it is possible that the defroster will automatically turn
itself off. When this happens, the indicator lamp inside
the switch starts blinking.
As soon as the battery has sufficient voltage, the
defroster automatically turns itself back on.

122 Interior equipment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Power windows
Power window switches located on front center console
1left, front
2right, front
3left, rear
4right, rear
5Switch for rear door window overridePower window switches located on rear center console
6left, rear
7right, rear
P54.25-2477-26
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P54.25-2473-26

123 Interior equipment
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Turn key in steering lock to position 1 or 2.
Opening the side windows:
Press k on the switch to resistance point.
Closing the side windows:
Press j on the switch to resistance point.
Release switch when window is in desired position.
Express opening and closing of windows
Press k or j on the switch past resistance point
and release – window opens or closes completely.
To interrupt procedure, briefly press j or k.
If the upward movement of the window is blocked
during the closing procedure, the window will stop
during the last few inches before closure and open
slightly.
When pressing and holding the switch j to close the
window, and upward movement of the window is
blocked during the last few inches before closure, it will
stop and reopen.
Wa r n i n g !
When closing the windows, be sure that there is no
danger of anyone being harmed by the closing
procedure.The closing procedure can be immediately reversed
by pressing the power window switch.When leaving the vehicle, always remove the key
from the steering lock, and lock the vehicle. Do not
leave children unattended in the vehicle, or with
access to an unlocked vehicle. Unsupervised use of
vehicle equipment can cause serious personal
injury.