2012 Toyota Prius Owners Manual - Page 730
2012 Toyota Prius Manual
Page 730 highlights
4-3. Do-it-yourself maintenance Washer fluid STEP 1 Open the lid. STEP 2 Check the washer fluid level on the level gauge. "NORMAL" "LOW" 4 Maintenance and care STEP 3 If the washer fluid level is at "LOW", add washer fluid. 429
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