Chevrolet Impala 2014 Owner's Manual page 206

8-6 Climate Controls
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 Vehicle Personalization on
page 5-40.
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. At higher speeds, the
rear window defogger may stay on
continuously.
The upper region of gridlines on the
rear window are antenna lines and
are not intended to heat when the
defogger is activated.
If equipped with heated outside
rearview mirrors, they turn on with
the rear window defogger and help
to clear fog or frost from the surface
of the mirror. See Heated Mirrors on
page 2-20.
Caution
Using a razor blade or sharp
object on the inside rear window
can damage the antenna or
defogger. Repairs would not be
covered by the vehicle warranty.
Do not stick anything to the rear
window.
Remote Start Climate Control
Operation (If Equipped):
If equipped with remote start, the
climate control system may run
when the vehicle is started remotely.
The system uses the driver s
previous settings to heat or cool the
inside of the vehicle. The rear defog
may come on during remote start
based on cold ambient conditions.
The rear defog indicator light may
not come on during a remote start.
The front heated seats may turn on
if it is cold outside. The heated seat
indicator lights may not come on
during a remote start. See Remote
Vehicle Start on page 2-9 and
Heated and Ventilated Seats on
page 1-11 (if equipped).
Sensors