2009 Toyota Avalon Owners Manual - Page 180

2-3. Operating the lights and windshield wipers Wash/wipe operation Wipers will automatically operate a couple of times after the washer squirts. n Raindrop detection windshield wipers (if equipped) With "AUTO" selected, the wipers will operate automatically when the sensor detects falling rain. The system automatically adjusts wiper timing in accordance with rain volume and vehicle speed. Raindrop detection wiper operation Low speed wiper operation High speed wiper operation Temporary operation 154