2010 Cadillac CTS Owner's Manual - Page 236

7-4 Climate Controls The rear window defogger stays on for about 15 minutes, before turning off if the vehicle is moving at a slower speed. At higher speeds, the rear window defogger may stay on continuously. With each additional press, the defogger runs for about 10 minutes. The defogger can also be turned off by turning off the engine. The heated outside rearview mirrors turn on when the rear window defogger button is on and helps to clear fog or frost from the surface of the mirror. See Heated Mirrors on page 1‑27. Notice: Do not try to clear frost or other material from the inside of the front windshield and rear window with a razor blade or anything else that is sharp. This may damage the rear window defogger grid and affect your radio's ability to pick up stations clearly. The repairs wouldn't be covered by your warranty. Recirculation is not available in the defrost mode and automatically turns off 10 minutes after defog is selected. This helps to limit window fogging 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. z /{ (Heated and Ventilated Seats): Press to heat or ventilate the seat. See Heated and Ventilated Front Seats on page 2‑9. 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 1‑12. In cold weather the windshield defroster and/or rear window defogger automatically turn on. If the vehicle has heated seats, they will also turn on. When the ignition is turned to ON/ RUN, the climate control system returns to the settings used before the vehicle was last turned off. The heated seats will turn off, if equipped. F (Outside Air): Press to turn on the outside air. An indicator light turns on. The outside air mode pulls fresh air from outside the vehicle. Outside air is always selected in defrost mode to prevent fogging. Rear Window Defogger 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 Defogger): Press to turn the rear window defogger on or off.