2000 Saab 9-3 Owner's Manual - Page 79

Instruments and controls Electrically heated rear window/external mirrors The button is located on the climate-control panel. An LED in the button is lit as long as heating is on. Switch off the heating as soon as the rear window is clear. It will go off automatically after about 10 minutes. If the battery voltage is lower than 12 V the heating will be switched off earlier so that the battery can get the benefit of the alternator charge. Avoid placing sharp objects on the rear parcel shelf; the heater elements may suffer damage if such objects touch the rear window. Do not switch the heating on until you have started the engine. 79 Recommended settings in severe cold On starting with a cold engine, set the fan switch to position 2 and select defrost to heat the cabin and defrost the windshield as quickly as possible. When the engine is warm enough for the reading of the temperature gauge to start rising, fan setting 3 may be chosen. Once the windshield is clear, the air-distribution control should be shifted two steps to the left. The warm-up time of the engine depends on the kind of driving. Town driving in high gear with a low RPM gives a longer warm-up time than highway driving with a higher RPM. Do not use position 4 on the fan switch, as this is mainly intended to provide rapid cooling in hot weather.