Lexus LS460 Owner's Manual page 254

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4-3. Operating the lights and wipers

The windshield wiper and washer can be operated when
The engine switch is in IGNITION ON mode.

Dripping prevention wiper sweep
After washing and the wiper has operated several times, the wipers operate
one more time after a short delay to prevent dripping.
However, the last sweep will not happen if the vehicle is traveling above 170
km/h (106 mph).

Effects of vehicle speed on wiper operation
Even when the wipers are not in "AUTO" mode, vehicle speed affects the
time until the drip prevention wiper sweep occurs.
With low speed windshield wiper operation selected, wiper operation will be
switched from low speed to intermittent wiper operation only when the vehi-
cle is stationary.
(However, when the sensor sensitivity is adjusted to the highest level, the
mode cannot be switched.)

Raindrop sensor

The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from
the rising or setting of the sun intermit-
tently strikes the windshield, or if bugs
etc. are present on the windshield.

If the wiper is turned to "AUTO" mode while the engine switch is in IGNI-
TION ON mode, the wipers will operate once to show that "AUTO" mode
is activated.

If the temperature of the raindrop sensor is 90°C (194°F) or higher, or -15°C
(5°F) or lower, automatic operation may not occur. In this case, operate the
wipers in any mode other than "AUTO" mode.

If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the
windshield washer fluid reservoir.

Outside rear view mirror defogger activation linked to windshield wiper oper-
ation
The outside rear view mirror defoggers automatically turn on when you oper-
ate the windshield wipers.
The outside rear view mirror defoggers automatically turn off approximately
LS460_EE (OM50D49E)