Mercedes-Benz 2008 C-Class Automobile User Manual


 
266
Controls in detail
3-zone automatic climate control* (Canada only)
̈ Activating: Press button ,
(
page 259).
The indicator lamp in the button comes
on.
̈ Deactivating: Press button ,
(
page 259) again.
The indicator lamp in the button goes
out.
Residual engine heat and ventilation
With the engine switched off, it is possible
to continue to heat or ventilate the interior
for approximately 30 minutes. This feature
makes use of the residual heat produced
by the engine.
̈ Activating: Switch off the ignition.
̈ Press button T ( page 259).
The indicator lamp in the button comes
on.
̈ Deactivating: Press button T
(
page 259) again.
The indicator lamp in the button goes
out.
i
The air recirculation mode is activated auto-
matically at high outside temperatures.
The indicator lamp on button , is not lit when
the air recirculation mode is automatically
switched on.
A quantity of outside air is added after approxi-
mately 30 minutes.
i
The air recirculation mode is deactivated au-
tomatically:
ț after 5 minutes if the outside temperature is
below approximately 7°C (45°F)
ț after 5 minutes if the air conditioning is
turned off
ț after 30 minutes if the outside temperature
is above approximately 5°C (41°F)
i
If you switch on the residual heat function
when outside temperatures are high, only the
ventilation will be switched on.
i
Regardless of the selected air volume, the
blower operates at low speed when heating. In
case of ventilation the blower operates at higher
speed.
i
How long the system will provide heating de-
pends on
ț the coolant temperature
ț the temperature set by the operator
i
The residual heat is automatically turned off:
ț when the ignition is switched on
ț after approximately 30 minutes
ț if the battery voltage drops
ț if the coolant temperature is too low