218
Controls in detail
Dual-zone automatic climate control
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
왘 Press button 2 (컄 page 206) or
(
컄 page 207) again.
The indicator lamp on the button
comes on.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
Residual heat and ventilation
(Canada only)
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 Switch off the ignition.
왘 Press button T (컄 page 207).
REST
in the display 4 (컄 page 207)
comes on.
Deactivating
왘 Press button T (컄 page 207) again.
REST
in the display 4 (컄 page 207)
goes out.
!
If the air conditioning cannot be turned on
again, this indicates that the air conditioning is
losing refrigerant. The compressor has turned it-
self off.
Have the air conditioning checked at the nearest
authorized Mercedes-Benz Center.
i
If you switch on the residual heat function
when temperatures are high, only the ventilation
will be switched on.
i
Regardless of the selected air volume, the
blower operates at low speed.
i
How long the system will provide heating de-
pends on
앫 the coolant temperature
앫 the temperature set by the operator
The blower will run at speed setting 1 regardless
of the air distribution 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 battery voltage drops
앫 if the coolant temperature is too low
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