2011 Toyota Prius Owners Manual - Page 469

4-3. Do-it-yourself maintenance NOTICE n If the fluid level is low It is normal for the brake fluid level to go down slightly as the brake pads wear or when the fluid level in the accumulator is high. If the reservoir needs frequent refilling, it may indicate a serious problem. Washer fluid STEP 1 Open the lid. STEP 2 Check the washer fluid level on the level gauge. "NORMAL" "LOW" 446 PRIUS_U (OM47685U) DVD