Mercedes-Benz C-Class Wagon Owner's Manual page 156

Select First row of seats.
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Select SYNC (SYNC).
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Activating/deactivating the climate control
synchronisation function via the rear operat‐
ing unit
The rear climate control can be set centrally
using the synchronisation function. The tempera‐
ture and air distribution settings for one side are
automatically applied to the other side.
Press button A.
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Demisting the windows
Windows misted up on the inside
Press à on the climate bar on the central
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display.
If the windows remain misted up: press
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¬ on the climate bar on the central dis‐
play.
Windows misted up on the outside
Switch on the windscreen wipers.
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Press à on the climate bar on the central
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display.
Switching air-recirculation mode on/off
Press the g button.
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The interior air will be recirculated.
Air-recirculation mode automatically switches to
fresh air mode after some time.
% If air-recirculation mode is switched on, the
windows may mist up more quickly. Switch
on air-recirculation mode only briefly.
Switching residual heat on/off
Requirements:
The residual heat function is available.
R
The vehicle is parked.
R
The coolant temperature is sufficiently high.
R
It is possible to make use of the residual heat
from the engine to continue heating or ventilat‐
ing the front compartment of the vehicle for
Climate control 153
approximately 30 minutes, depending on the
temperature set.
To switch on: select Residual heat
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climate bar on the central display.
Residual heat will be switched off automatically.
%
If residual engine heat utilisation is activa‐
ted, the two buttons for setting the tempera‐
ture and air distribution are automatically
deactivated.
Activating/deactivating ionisation
Multimedia system:
Climate menu Air quality
4 5
Ionisation improves the quality of the vehicle's
interior air. Ionisation of the interior air is odour‐
less.
Select Ionisation.
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% The function can only be performed if the
AUTO mode is activated or the air distribu‐
tion is set to the side air vent. The function is
restricted if the side air vents on the driver's
side are closed.
on the