Lexus LS 600h L 2012 Owner's Manual page 233

2-3. Operating the lights and windshield wipers
The windshield wipers and washer can be operated when
■
The "POWER" switch is in ON mode.
Effects of vehicle speed on wiper operation
■
With the settings other than "AUTO" also, the time until drip prevention wiper
sweep occurs is changed depending on vehicle speed.
With low speed wiper operation selected, wiper operation will be switched from
low speed to intermittent wiper operation only when the vehicle is stationary.
(However, when the sensor sensitivity is adjusted to the highest, the mode cannot
be switched.)
230
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)
If the headlights are on, the
headlight cleaner will operate
once.