TOYOTA 2012 Camry - Manual (Page 183)

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2-3. Operating the lights and 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
Do not operate the switch continually as the washer fluid pump may over-
heat.
■
When a nozzle becomes blocked
In this case, contact your Toyota dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.