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194
Controls in detail
Automatic climate control
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
̈ Press ± again (୴ page 185).
The indicator lamp on the button ±
goes out.
The air conditioning uses the refrigerant
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 SmartKey in the starter switch
to position 1 or 0, or remove it from
the starter switch.
̈ Press button T (୴ page 185).
The indicator lamp on button T
comes on.
Deactivating
̈ Press button T (୴ page 185).
The indicator lamp on button T
goes out.
The residual heat is automatically turned
off:
ț when the ignition is switched on
ț after about 30 minutes
ț if the battery voltage drops
!
If button ± on the automatic cli-
mate control panel starts to flash, this
indicates that the air conditioning is
losing refrigerant. The compressor has
turned itself off. The air conditioning
cannot be turned on again.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.
i
How long the system will provide heat-
ing depends on the coolant tempera-
ture and the temperature set by the
operator. The blower will run at speed
setting 1 regardless of the air distribu-
tion control setting.