Cadillac CTS 2013 Owner's Manual page 220

8-4 Climate Controls
Recirculation is not available in the
defrost mode and automatically
turns off 10 minutes after demist is
selected. This helps to limit window
misting in the vehicle.
Using recirculation for long periods
of time could cause the air inside
the vehicle to become too dry or
stuffy. To prevent this from
happening, after the air in the
vehicle has cooled, select outside
air or press the auto button.
(Outside Air): Press to turn
on the outside air. An indicator light
turns on. The outside air mode
draws fresh air from outside the
vehicle. Outside air is always
selected in defrost mode to prevent
misting.
Rear Window Demister
The rear window defogger uses a
warming grid to remove fog or frost
from the rear window. It only works
when the ignition is in ON/RUN.
=
(Rear Window Demister):
Press to turn the rear window
demister on or off.
The rear window demister stays on
for about 15 minutes, before turning
off if the vehicle is moving at a
slower speed. At higher speeds, the
rear window demister may stay on
continuously. With each additional
press, the demister runs for about
10 minutes. The demister can also
be turned off by turning off the
engine.
The heated door mirrors turn on
when the rear window demister
button is on and helps to clear mist
or frost from the surface of the
mirrors. See Heated Mirrors on
page 2 27.
Do not try to clear frost
or other material from the inside
of the front windscreen and rear
window with a razor blade or
anything else that is sharp.
This may damage the rear
window demister grid and affect
the radio's ability to pick up
stations clearly. The repairs
would not be covered by the
vehicle warranty.
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/ (Heated and Ventilated
Seats, If Equipped): Press to heat
or ventilate the seat. See Heated
and Ventilated Front Seats on
page 3 9.
Remote Start Climate Control
Operation: For vehicles with
remote vehicle start, the climate
control system automatically heats
and cools the vehicle based on the
temperature inside and outside of
the vehicle. The climate control
displays will be blank. See Remote
Vehicle Start on page 2 10.
In cold weather the windscreen
defroster and/or rear window
demister automatically turn on. If the
vehicle has heated seats, they will
also turn on.