Mercedes-Benz M-Class Operator's Manual page 127

Directs the airflow through the rear air vents
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Directs the airflow through the footwell vents
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Notes on using climate control
The following contains notes and
recommendations on optimum operation of
dual-zone automatic climate control.
Activate climate control using the à and
R
¿/Á buttons. The indicator lamps in
the à and ¿/Á buttons light up.
Set the temperature to 72 ‡ (22 †).
R
Only use the "defrosting" function briefly
R
until the windshield is clear again.
Only use "air-recirculation" mode briefly,
R
e.g. if there are unpleasant outside odors
or when in a tunnel. The windows could
otherwise fog up as, in air-recirculation
mode, no fresh air is drawn into the vehicle.
Use the ZONE function to adopt the
R
temperature settings on the driver's side
for the front-passenger side as well. The
indicator lamp in the á button goes out.
Overview of climate control systems
I n f o r ma t i o n P r o v i d e d b y :
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