Lexus RX 450h 2010 Owner's Manual, Quick Manual page 25

Windshield Wipers and Washer
■ Intermittent wiper with interval adjuster (if equipped)
Off
1
Intermittent operation
2
Low speed
3
High speed
4
Single wipe
5
Intermittent operation: Wiper interval can be
adjusted by turning the band.
To spray washer fluid, pull the lever. The wipers
will operate automatically.
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