2011 Lexus RX 350 Owners Manual - Page 270

2-3. Operating the lights and windshield wipers Washer/wiper dual operation The wipers will automatically operate a couple of times after the washer squirts. If the headlights are on, the headlight cleaners will operate once. Rain-sensing windshield wipers When is selected, the wipers will operate automatically when the sensor detects falling rain. The system automatically adjusts wiper timing in according to rain volume and vehicle speed. When is selected, the sensor sensitivity can be adjusted as follows by turning the switch ring: Off Rain-sensing wiper operation Low speed wiper operation High speed wiper operation Temporary operation 198