Toyota PRIUS Owner's Manual page 291

■
The rear window wiper and washer can be operated when
The power switch is in ON mode.
■
If no washer fluid sprays
Check that the washer nozzle is not blocked if there is washer fluid in the
washer fluid tank.
NOTICE
■ When the rear window is dry
Do not use the wiper, as it may damage the rear window.
■
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 any authorized Toyota dealer or repairer, or another
duly qualified and equipped professional.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■
To prevent 12-volt battery discharge
Do not leave the wiper on longer than necessary when the hybrid system is
off.
PRIUS_OM_OM47A31E_(EE)
4-3. Operating the lights and wipers
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