2012 Toyota Prius Owners Manual - Page 519

2-3. Operating the lights and wipers Washer/wiper dual operation The wipers will automatically operate a couple of times after the washer squirts. 2 Type B When driving Intermittent windshield wiper operation Low speed windshield wiper operation High speed windshield wiper operation Temporary operation Increases the intermittent windshield wiper frequency* Decreases the intermittent windshield wiper frequency* *: The interval adjuster may not be equipped depending on vehicle grade. 209