Rear Window Defroster - Mercedes-Benz 2009 CL-Class Operator's Manual

the selected temperature. The blower will
run at low speed regardless of the air
distribution control setting.
X
Activating: Switch off the ignition.
X
Press rocker switch up or down.
T
The indicator lamp in the rocker switch
comes on.
X
Deactivating: Press rocker switch
or down.
The indicator lamp in the rocker switch
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
up
T
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
approximately 6 to 17 minutes of operation
depending on the outside temperature.
X
Switch on the ignition.
X
Switching on: Press button
down.
The indicator lamp in the button comes on.
X
Switching off: Press button
down.
! If the rear window defroster switches off
too soon and the indicator lamp starts
flashing, too many electrical consumers
are operating simultaneously and there is
insufficient voltage in the battery. The
system responds automatically by
switching the rear window defroster off.
As soon as the battery has sufficient
voltage, the rear window defroster
switches back on automatically.
up or
¯
up or
¯
Controls in detail
Rear window defroster
393
Z