Mercedes-Benz C-class Operator's Manual page 163

Instruments
Operation
and controls
Automatic climate control
Activated charcoal filter
An activated charcoal filter markedly reduces bad odors
and removes pollutants from air entering the passenger
compartment.
To select, press e button. The indicator lamp in the
button illuminates.
To cancel, press button. The indicator lamp in the button
goes out.
The system switches automatically to the air
recirculation mode, if the carbon monoxide (CO) or
nitrogen oxides (NO
increases beyond a predetermined level.
The automatic air recirculation mode does not function
if economy mode S is selected or if the outside
temperature has fallen below 40 ° F (5 ° C).
The activated charcoal filter should be switched off
when windows fog up on the inside, or if the passenger
compartment needs to be quickly heated or cooled
down.
Instrument
Driving
cluster display
) concentration of the outside air
X
Practical hints Car care
154
Switching on the activated carbon filter and activating
convenience closing of power windows and sliding/
pop-up roof:
The indicator lamp in the e button is off.
Press button e for more than 2 seconds, the side
windows and the sliding/pop-up roof will be closed. The
indicator lamp in the button lights up.
Switching off activated carbon filter and activating
convenience opening:
The indicator lamp in the e button is on.
Press button e for more than 2 seconds, the side
windows and the sliding/pop-up roof return to the
position they were in before closing.
A window or the sliding/pop-up roof opened manually
after convenience closing will no longer be returned to
the position it was in before closing when convenience
opening is selected.
Technical
Index
data