Problem With The Rear Window Defroster - Mercedes-Benz E-Class Coupe Operator's Manual

Operating the climate control systems
156
Problems with the rear window defroster
Problem
The rear window
defroster has deactiva-
ted prematurely or can-
not be activated.
Activating/deactivating air-recircula-
tion mode
General notes
You can deactivate the flow of fresh air if
unpleasant odors are entering the vehicle
from outside. The air already inside the vehi-
cle will then be recirculated.
If you switch on air-recirculation mode, the
windows can fog up more quickly, in particu-
lar at low temperatures. Only use air-recircu-
lation mode briefly to prevent the windows
from fogging up.
Switching on/off
Turn the SmartKey to position 2 in the igni-
X
tion lock ( page 161).
Y
To activate: press the g button.
X
The indicator lamp above the g button
lights up.
To deactivate: press the g button.
X
The indicator lamp above the g button
goes out.
i
Air-recirculation mode deactivates auto-
matically:
after approximately five minutes at out-
R
side temperatures below approximately
41 ‡ (5 †)
after approximately five minutes if cool-
R
ing with air dehumidification is deactiva-
ted
after approximately 30 minutes at out-
R
side temperatures above approximately
Possible causes/consequences and M M Solutions
The battery has not been sufficiently charged.
Switch off any consumers that are not required, e.g. reading
X
lamps, interior lighting or the seat heating.
When the battery is sufficiently charged, the rear window
defroster can be activated again.
41 ‡ (5 †) if the "Cooling with air dehu-
midification" function is activated
Activating/deactivating the residual
heat function
General notes
It is possible to make use of the residual heat
of the engine to continue heating the vehicle
for approximately 30 minutes after the engine
has been switched off. The heating time
depends on the set interior temperature.
Coupe: optimum operation of the residual
heat function is only achieved with the side
windows and panorama roof with power tilt/
sliding panel closed.
Cabriolet: optimum operation of the residual
heat function is only achieved when the soft
top is closed.
Switching on/off
Turn the SmartKey to position 0 in the igni-
X
tion lock or remove it (
To activate: press the Ì button.
X
The indicator lamp above the Ì button
lights up.
i If the residual heat function is activated,
the windows may fog up on the inside.
i The blower will run at a low speed regard-
less of the airflow setting.
i
If you activate the residual heat function
at high temperatures, only the ventilation
page 161).
Y