Mercedes-Benz GLC Owner's Manual page 173

Operating the climate control system
170
Problems with the rear window heating
Problem
The rear window heat-
ing has switched off
prematurely or cannot
be activated.
Switching air-recirculation mode
on/off
General notes
You can also temporarily deactivate the flow
of fresh air manually if unpleasant odours are
entering the vehicle from outside. The air
already inside the vehicle will then be recir-
culated.
If you activate air-recirculation mode, the win-
dows can mist up more quickly, in particular
at low temperatures. Only use air-recircula-
tion mode briefly to prevent the windows
misting up.
Activating/deactivating
Turn the key to position 2 in the ignition
X
lock ( page 187).
Y
To activate: press the g rocker switch
X
up or down.
The indicator lamp above the g rocker
switch lights up.
Air-recirculation mode is activated automati-
cally:
at high outside temperatures
R
at high levels of pollution (THERMOTRONIC
R
automatic climate control only)
in a tunnel (vehicles with a navigation sys-
R
tem only)
The indicator lamp above the g rocker
switch is not lit when automatic air-recircula-
tion mode is activated. Outside air is added
after approximately 30 minutes.
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 heat-
ing can be activated again.
To deactivate: press the g rocker
X
switch up or down.
The indicator lamp above the g rocker
switch goes out.
Air-recirculation mode is deactivated auto-
matically:
after approximately five minutes at outside
R
temperatures below approximately 5 †
after approximately five minutes if "Cooling
R
with air dehumidification" is deactivated
after approximately 30 minutes at outside
R
temperatures above approximately 5 † if
the "Cooling with air dehumidification"
function is activated
Convenience opening or closing using
the air-recirculation button
G WARNING
When the convenience closing feature is oper-
ating, parts of the body could become trapped
in the closing area of the side window and the
sliding sunroof. There is a risk of injury.
Observe the complete closing procedure
when the convenience closing feature is oper-
ating. When closing make sure that no parts of
the body are in the closing area.
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.