2008 Subaru Outback Owner's Manual - Page 172

Instruments and controls 3-53 speed is low; shorter when the vehicle speed is high). When you subsequently move the selector lever of the automatic transmission to the "R" position, the rear wiper will switch to continuous operation. When you move the selector lever from the "R" position to some other position, the rear wiper will return to intermittent operation. ! Washer To wash the rear window while the rear wiper is operating, turn the knob on the end of the wiper control lever upward to the " " position. The washer fluid sprays until you release the knob. To wash the rear window when the rear wiper is not in use, turn the knob on the end of the wiper control lever downward to the " " position. The washer fluid sprays and the wiper operates until you release the knob. Windshield wiper deicer (if equipped) to the "Acc" or "LOCK" position. If deicing is not complete, you have to push the button to turn the deicer on again. Your SUBARU dealer can set your windshield wiper deicer for continuous operation. Contact your SUBARU dealer for details. Once the windshield wiper deicer has been set for continuous operation, pressing the button results in continuous operation. The windshield wiper deicer automatically stops operating if any one of the following conditions occurs during continuous operation. . The outside temperature becomes 418F (58C) or higher. . The vehicle speed remains at 9 mph (15 km/h) or lower for 15 minutes. . The battery voltage decreases below the permissible level. The windshield wiper deicer operates only when the ignition switch is in the "ON" position. Before turning on the windshield wiper deicer, remove any snow from the windshield. To turn on the windshield wiper deicer, push the button. The indicator light located on the button lights up while the windshield wiper deicer is operating. The windshield wiper deicer will automatically shut off after approximately 15 minutes. If the windshield wiper blades have been deiced completely before that time, push the button to turn it off. It also turns off when the ignition switch is turned