2011 Toyota Prius Owners Manual - Page 470

4-3. Do-it-yourself maintenance STEP 3 If the washer fluid level is at "LOW", add washer fluid. ITO43P177 CAUTION n When refilling the washer fluid Do not refill the washer fluid when the hybrid system is hot or operating, as the washer fluid contains alcohol and may catch fire if spilled on the hybrid system etc. 4 NOTICE n Do not use any fluid other than washer fluid Do not use soapy water or engine antifreeze instead of washer fluid. Doing so may cause streaking on the vehicle's painted surfaces. n Diluting washer fluid Dilute washer fluid with water as necessary. Refer to the freezing temperatures listed on the washer fluid tank. Maintenance and care 447 PRIUS_U (OM47685U) DVD