2003 Lexus GX 470 Owners Manual - Page 529

SWITCHES To turn the electric rear window defogger on, push the switch. The ignition key must be in the "ON" position. The thin heater wires on the inside of the rear window will quickly clear the surface. An indicator light will illuminate to indicate the defogger is operating. The system will automatically shut off when the defogger has operated about 15 minutes. If further defrosting or defogging is desired, simply actuate the switch again. When the surface has cleared, push the switch once again to turn the defogger off. Continuous use may cause the battery to discharge, especially during stop−and−go driving. The defogger is not designed to dry rain water or to melt snow. OUTSIDE REAR VIEW MIRROR DEFOGGER SWITCH To turn the electric outside rear view mirror defogger on, push the switch. The ignition key must be in the "ON" position. The thin heater wires on the heater panels in the outside rear view mirrors will quickly clear the surface. Keep your hands off the mirror faces when the switch is on. An indicator light will illuminate to indicate the defogger is operating. The system will automatically shut off when the defogger has operated about 5 minutes. NOTICE D When cleaning the inside of the rear window, be careful not to scratch or damage the heater wires or connectors. D To prevent the battery from being discharged, turn the switch off when the engine is not running. 32