2014 Chevrolet Impala Owner Manual - Page 206

8-6 Climate Controls 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. 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). 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. { 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 Sensors Rear Window Defogger K (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.