Toyota PRUS V 2020 Owner's Manual page 311

Washer fluid
Open the lid.
1
Check the washer fluid level on
2
the level gauge.
"NORMAL"
1
"LOW"
2
If the washer fluid level is at
3
"LOW", add washer fluid.
WARNING
When adding washer fluid
■
Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the engine etc.
6-3. Do-it-yourself maintenance
309
6