Lexus LS 600h L 2012 Owner's Manual page 234

Raindrop sensor
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If the wiper switch is turned to "AUTO" position while the "POWER" switch is in
●
ON mode, the wiper operate once to show that auto mode is activated.
If the temperature of the raindrop sensor is 194°F (90°C) or higher, or 5°F
●
(-15°C) or lower, automatic operation may not occur. In this case, operate
the wipers in any mode other than "AUTO".
If no windshield washer fluid sprays
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Check that the washer nozzles are not blocked and if there is washer fluid in the
windshield washer fluid reservoir.
CAUTION
Caution regarding the use of windshield wipers in "AUTO" mode
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The windshield wipers may operate unexpectedly if the sensor is touched or the
windshield is subject to vibration in "AUTO" mode. Take care that your fingers or
anything else do not become caught in the windshield wipers.
NOTICE
When the windshield is dry
■
Do not use the wipers, as they may damage the windshield.
When the washer fluid tank is empty
■
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.
2-3. Operating the lights and windshield wipers
The raindrop sensor judges the amount of
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raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from the
rising or setting of the sun intermittently
strikes the windshield, or if bugs etc. are
present on the windshield.
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