2008 Toyota 4Runner Owners Manual - Page 184

07 12.25 Back window and outside rear view mirror defoggers For instructions on adding washer fluid, see "Adding washer fluid" on page 453 in Section 7−3. If the back window is not fully closed, the back window wiper and washer will not work. Make sure the back window is fully closed when using the back window wiper and washer. The system will automatically shut off after the defoggers have operated about 15 minutes. If the back window is not fully closed, the back window defogger will not work. Make sure the back window is fully closed when using the back window defogger. If the back window is opened while the defogger is working, the defogger will automatically turn off. Even if the back window is fully closed after that, the defogger will not automatically turn on. To defog or defrost the back window, push the switch with the back window closed. The engine switch must be in the "ON" position. The thin heater wires on the inside of the back window will quickly clear the surface. An indicator light will illuminate to indicate the defogger is operating. On some models, heater panels in the outside rear view mirrors will also quickly clear the surfaces. Push the switch once again to turn the defoggers off. Make sure you turn the defoggers off when the surfaces are clear. Leaving the defoggers on for a long time could cause the battery to discharge, especially during stop−and−go driving. The defoggers are not designed for drying rain water or for melting snow. CY14009 NOTICE Do not operate the back window wiper if the back window is dry. It may scratch the glass. CAUTION On some models, since the mirror surfaces can get hot, do not touch them when the defogger switch is on. 142