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Controls in detail
Automatic climate control
Deactivating the climate control sys-
tem
Deactivating
It is possible to completely deactivate the
automatic climate control system.
̈ Press button M (୴ page 159).
The display shows “0”
Reactivating
There are several ways to reactivate the
automatic climate control system:
̈ Press one of the following buttons,
M, P, U, a temperature con-
trol switch (
୴ page 159) or air volume
switch 9 on the climate control panel.
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 AC
OFF
(୴ page 159).
The indicator lamp on the
button AC
OFF
lights up.
Activating
Moist air can fog up the windows. You can
dehumidify the air with the air condition-
ing.
̈ Press AC
OFF
again (୴ page 159).
The indicator lamp on the
button AC
OFF
goes out.
The air conditioning uses the refrigerant
R134a. This refrigerant is free of CFCs
which are harmful to the ozone layer.
i
Condensation may drip out from under-
neath the vehicle. This is normal and
not an indication of a malfunction.
!
If the AC
OFF
button on the automatic
climate control panel starts to blink,
this indicates that the air conditioning
is losing refrigerant. The compressor
has turned itself off. The air condition-
ing cannot be turned on again.
Have the air conditioning checked at
the nearest authorized Mercedes-Benz
Center.