Mercedes-Benz 2003 C-Class - Manual (Page 161)

161
Controls in detail
Automatic climate control*
Deactivating
̈ Press button O.
The indicator lamp on the button goes
out.
The air recirculation mode is deactivated
automatically:
ț after five minutes if the outside temper-
ature is below approximately 41°F
(5°C)
ț after five minutes if the air conditioning
is turned off
ț after 30 minutes if the outside temper-
ature is above approximately 41°F
(5°C)
At outside temperatures above 79°F
(26°C) the system will not automatically
switch back to outside air. A quantity of
outside air is added after approximately
30 minutes.
Charcoal filter
An activated charcoal filter markedly re-
duces bad odors and removes pollutants
from air entering the passenger compart-
ment.
Activating
̈ Press button e.
The indicator lamp on the button lights
up.
The system switches automatically to the
air recirculation mode if the carbon
monoxide (CO) or nitrogen oxide (NO
X
)
concentration of the outside air increases
beyond a predetermined level.
i
If you keep button O pressed, the
side windows and the sliding/pop-up
roof* will be closed.
The air recirculation mode is activated
automatically:
ț at high outside temperatures
ț if the concentration of carbon mon-
oxide and nitrogen oxide in the out-
side air increases, for example in a
tunnel
Please note that the charcoal filter
must be activated (see below) for
the air recirculation mode to be
activated automatically.
If you have turned off the air condition-
ing (
୴ page 163) or the outside
temperature is below 41°F (5°C), the
air recirculation mode will not switch
on automatically.
i
If you keep button O pressed the
side windows and the sliding/pop-up
roof* will be returned to their previous
position.