Toyota Yaris Sedan 2008 Quick Reference Manual page 251

4-3. Do-it-yourself maintenance
NOTICE
n When recharging the battery
Never recharge the battery while the engine is running. Also, be sure all
accessories are turned off.
Washer fluid
If any washer does not work or the low washer fluid warning light
comes on, the washer tank may be empty.
238
Open the lid.
Add washer fluid.