Lexus IS250 2009 Service Manual page 514

Rain-sensing windshield wipers (if equipped)
n
IS_U (L/O_0808)
Rain and Night Driving
Automatic operation
1
Low speed
2
High speed
3
Single wipe
4
Automatic operation: Sensitivity can be adjusted
by turning the band.
To spray washer fluid, pull the lever. The wipers
will operate automatically.
Topic 4
36