2007 Subaru Impreza Owner's Manual - Page 143

Instruments and controls 3-35 the following. . If the battery voltage drops below the permissible level within 15 minutes of depression of the button, continuous operation is canceled and the rear window defogger stops operating 15 minutes later. . If the battery voltage drops below the permissible level after the rear window defogger has, following depression of the button, operated for 15 minutes, stopped operating for two minutes, and started operating again, the rear window defogger immediately stops operating. window defogger is operating. . Turn on the rear window defogger if the wiper is frozen to the glass. Windshield wiper deicer (if equipped) CAUTION . Do not use sharp instruments or window cleaner containing abrasives to clean the inner surface of the rear window. They may damage the conductors printed on the window. . To prevent the battery from being discharged, do not operate the defogger continuously for any longer than necessary. Manual climate control system NOTE . If your vehicle is equipped with the outside mirror defogger, the outside mirror defogger operates while the rear Automatic climate control system - CONTINUED -