Cadillac 2016 CT6 Owner's Manual page 182

turned off or the outside
temperature falls below freezing, the
air conditioner will not run.
Press AUTO to return to automatic
operation and the air conditioner
runs as needed.
Automatic Air Recirculation :
When the AUTO indicator light is
on, the air is automatically
recirculated as needed to help
quickly cool the inside of the
vehicle.
The climate control system may
have a sensor to detect air pollution.
When using automatic air
recirculation, the air quality control
system may operate. To adjust the
sensitivity of the air quality sensor,
see Climate and Air Quality under
Vehicle Personalization 0 157.
: Press to alternate between
recirculating air inside the vehicle or
pulling in outside air. The indicator
light on the button is lit when
recirculation mode is active. This
helps to quickly cool the air inside
the vehicle or reduce the outside air
and odors that might enter.
Pressing this button cancels
automatic recirculation. Press AUTO
to return to automatic operation;
recirculation runs automatically as
needed.
Manual recirculation mode is not
available when in Defrost or Defog
modes.
Auto Defog : The climate control
system may have a sensor to
automatically detect high humidity
inside the vehicle. When high
humidity is detected, the climate
control system may adjust to
outside air supply and turn on the
air conditioner. If the climate control
system does not detect possible
window fogging, it returns to normal
operation. To turn Auto Defog off or
on, see Climate and Air Quality
under Vehicle
Personalization 0 157.
Ionizer : If equipped with an ionizer,
this feature helps to clean the air
inside the vehicle and remove
contaminants such as pollen, odors,
and dust. If the climate control
system is on and the ionizer is
enabled, the ionizer status indicator
Climate Controls
will be lit on the climate control
touch screen. To turn the ionizer on
or off, see Climate and Air Quality
under Vehicle
Personalization 0 157.
Rear Window Defogger
: Press to turn the rear window
defogger on or off.
The rear window defogger can be
set to automatic operation. See
Climate and Air Quality under
Vehicle Personalization 0 157.
When Auto Rear Defog is selected,
the rear window defogger turns on
automatically when the interior
temperature is cold and the outside
temperature is about 4 °C (40 °F)
and below.
The upper grid lines on the rear
window are antenna lines and are
not intended to heat when the
defogger is activated.
The heated outside rearview mirrors
turn on when the rear window
defogger button is on and help to
clear fog or frost from the surface of
the mirrors.
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