Buick LaCrosse Owner's Manual page 271

AUTO, eco , or Comfort
selected. The engine also restarts if
the is pressed on and the system
is set to AUTO, eco ,
or Comfort .
If temperature controls are adjusted
cooler by more than 1°C (1°F)
during an auto stop, the engine will
restart to ensure that comfort is
reached.
/ (Recirculation/Auto
Recirculation): Press to change to
automatic control of air recirculation
inside the vehicle. When the auto
recirculation indicator light is on, the
air is automatically recirculated as
needed to help quickly cool the air
inside the vehicle.
In auto recirculation control, the Air
Quality Control system may operate
when pollution is detected. To adjust
the sensitivity of the Air Quality
Control, see Climate and Air
Quality under
is When the
is recirculated inside the vehicle.
If both indicator lights are off,
outside air will flow into the vehicle.
Press AUTO or
automatic operation.
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. The fan speed may
slightly increase to help prevent
fogging. 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
.
.
indicator light is on, air
to return to
Climate Controls
Rear Window Defogger
(Rear Window Defogger):
Press to turn the rear window
defogger on or off.
The rear window defogger turns off
automatically after about
10 minutes. If turned on again it
runs for about five minutes before
turning off. The defogger can also
be turned off by turning the ignition
to ACC/ACCESSORY or
LOCK/OFF.
The rear window defogger can be
set to automatic operation. See
Climate and Air Quality under
. 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 auto rear
defogger turns off automatically
after about 10 minutes, or after
five minutes if the outside
temperature is not as cold.
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