2003 Toyota RAV4 Owners Manual - Page 107

Rear window defogger NOTICE Do not operate the rear wiper if the rear window is dry. It may scratch the glass. Make sure you turn the defogger off when the window is clear. Leaving the defogger on for a long time could cause the auxiliary battery to discharge, especially during stop-and-go driving. The defogger is not designed for drying rain water or for melting snow. NOTICE When cleaning the inside of the rear window, be careful not to scratch or damage the heater wires or connectors. To defog or defrost the rear window, push the switch. The 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. Push the switch once again to turn the defogger off. The system will automatically shut off after the defogger has operated about 15 minutes. 98