Rear Window Defroster; Residual Heat And Ventilation - Mercedes-Benz CLS Operator's Manual

The indicator lamp in button g is not lit
when the air recirculation mode is switched
on automatically.
A quantity of outside air is added after
approximately 30 minutes.
X
Deactivating: Press button g again.
The indicator lamp in the button goes out.
The manually selected air recirculation
i
mode is deactivated automatically:
after 5 minutes if the outside
R
temperature is below approximately
41‡ (5†)
after 5 minutes if the air conditioning is
R
turned off
after 30 minutes if the outside
R
temperature is above approximately
41‡ (5†)

Residual heat and ventilation

This feature is only available in Canada
vehicles.
With the engine turned off, it is possible to
continue to heat or ventilate the interior for
up to 30 minutes. This feature makes use of
the residual heat produced by the engine.
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.
i How long the system will provide heating
depends on the coolant temperature and
the selected temperature. The blower will
run at speed setting 1 regardless of the air
volume control setting.
X
Activating: Switch off the ignition.
X
Press button Ì.
The indicator lamp in the button comes on.

Rear window defroster

X
Deactivating: Press button Ì.
The indicator lamp in the button goes out.
The residual heat is deactivated
automatically:
when the ignition is switched on
R
after approximately 30 minutes
R
if the battery voltage drops
R
if the coolant temperature is too low
R
Rear window defroster
G
Warning!
Any accumulation of snow and ice should be
removed from the rear window before driving.
Visibility could otherwise be impaired,
endangering you and others.
The rear window defroster uses a large
amount of power. To keep the battery drain
to a minimum, switch off the defroster as
soon as the rear window is clear. The
defroster is switched off automatically after
some time of operation depending on the
outside temperature.
X
Switch on the ignition.
X
Switching on: Press button ¤ on the
respective climate control panel.
The indicator lamp in the button comes on.
X
Switching off: Press button ¤ again.
The rear window defroster switches off when
the battery voltage is too low. The indicator
lamp in button ¤ flashes. Too many
electrical consumers may be operating
simultaneously.
X
Switch off consumers that are currently not
needed if required.
151
Z