2010 Toyota Highlander Owners Manual - Page 477

4-3. Do-it-yourself maintenance Washer fluid Add washer fluid in the following situations. l Any washer does not work. l The low washer fluid warning light comes on (vehicles without multi-information display). l The warning message appears on the multi-information display (vehicles with multi-information display). CAUTION n When adding the washer fluid Do not add the washer fluid when the engine is hot or running, as the washer fluid contains alcohol and may catch fire if spilled on the engine etc. 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. 452