Audi TT 2019 Owner's Manual page 78

Heating and cooling
� Air recirculation mode
The air recirculation mode can be switched on
manually or automatically*.
- To switch the manual air recirculation mode on/
off, press the� button.
- The automatic* air recirculation function must
be activated on the infotainment system. Se­
lect the following on the infotainment system:
I I button >Car> left control button > Ve­
MENU
hicle setti1ngs > A/C > Auto recirculation. The
air quality sensor, which is designed for the de­
tection of diesel and petrol exhaust fumes, au­
tomatically switches the air recirculation mode
on or off depending on the level of pollution in
the outside air.
In air recirculation mode, the air from the interior
of the vehicle is filtered and recirculated. This
setting prevents fumes etc. from entering the in­
terior. We recommend switching on the air recir­
culation mode when driving through a tunnel or
in traffic queues .&..
q
The air recirculation mode is switched off when
the� or AUTO or� button is pressed.
� Defroster
The windscreen and side windows are defrosted
or demisted as quickly as possible. The air output
is increased to maximum and most of the air
comes out of the outlets below the windscreen.
The air recirculation mode is deactivated. The
temperature is regulated automatically.
The defroster is switched off when the AUTO but­
ton is pressed.
� Rear window heating
If the rear window heating is activated with the
ignition switched on, the battery management
determines whether or not the battery charge
level is sufficient for the rear window heating to
be switched on. Otherwise the rear window heat­
ing operates when the engine is running, and
switches off automatically after about
10 - 20 minutes, depending on the outside tem­
perature.
To switch on the rear window heating permanent­
ly, press and hold the� button for at least two
76
seconds. This setting will be stored for approxi­
mately 15 minutes after the ignition is switched
off.
A
WARNING
For reasons of safety you should not leave the
air recirculation switched on for too long. This
mode prevents fresh air from entering the ve­
hicle, so the windows can mist over if the air
cooling is switched off. Bad visibility can cause
an accident.
Adjusting the air outlets
Fig. 85
Dashboard: Adjusting air outlet
To adjust the air flow direction, turn the ribbed
outer adjustment ring
To adjust the air flow intensity, move the lev­
er@ on the air outlet. To shut off the air flow,
move the lever all the way to the left.
Seat heating
Applies to: vehicles with seat heating
Fig. 86
Air outlet: Seat heating
J
When you press the
switched on at level 3 (the highest level). The
LEDs indicate the temperature level. To reduce
@q
Fig. 85.
button, the seat heating is
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