Lexus IS250 2009 Service Manual page 164

2-3. Operating the lights and windshield wipers
NOTICE
When the windshield is dry
n
Do not use the wipers, as they may damage the windshield.
When a nozzle becomes blocked
n
Do not try to clear it with a pin or other object. The nozzle will be damaged.
When there is no washer fluid spray from the nozzle
n
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.
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