Problem With The Rear Window Defroster - Mercedes-Benz B-Class Electric Drive W245 Operator's Manual

Operating the climate control systems
120
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.
Activating/deactivating
Turn the SmartKey to position 2 in the igni-
X
tion lock.
To activate: press the e button.
X
The indicator lamp in the e button lights
up.
i
Air-recirculation mode is activated auto-
matically at high outside temperatures.
When air-recirculation mode is activated
automatically, the indicator lamp in the
e button is not lit.
Outside air is added after about
30 minutes.
To deactivate: press the e button.
X
The indicator lamp in the e button goes
out.
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.
i
Air-recirculation mode deactivates auto-
matically:
after approximately 5 minutes at outside
R
temperatures below approximately 41 ‡
(5 †)
after approximately 5 minutes if the cool-
R
ing with air dehumidification function is
deactivated
after approximately 30 minutes at out-
R
side temperatures above approximately
41 ‡ (5 †) if the "Cooling with air dehu-
midification" function is activated
Convenience opening/closing using
the air-recirculation button
G WARNING
When using the convenience closing feature,
parts of the body could be trapped in the clos-
ing area when a side window is being closed.
There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. Make sure that no body parts are in
close proximity during the closing procedure.
G WARNING
During convenience opening parts of the body
could be drawn in or become trapped
between the side window and window frame.
There is a risk of injury.
Make sure that nobody touches the side win-
dow during the opening procedure. If some-
one becomes trapped, press the W switch