2011 Toyota Avalon Owners Manual - Page 206

2-3. Operating the lights and windshield wipers n Effects of vehicle speed on wiper operation Vehicle speed affects the following even when the wipers are not in "AUTO" mode. l Intermittent wiper interval ( mode) l Wiper operation when the washer is being used With low speed mode, wiper operation will be switched from low speed to intermittent wiper operation only when the vehicle is stationary. n Rain drop sensor (vehicles equipped with the raindrop detection windshield wipers) l The sensor judges the amount of raindrops. An optical sensor is adopted. It may not operate properly when sunlight from the rising or setting of the sun intermittently strikes the windshield, or if bugs etc. are present on the windshield. l If the wiper switch is turned to the "AUTO" position while the "ENGINE START STOP" switch is in ON mode, the wipers will operate once to show that "AUTO" mode is activated. l If the temperature of the raindrop sensor is 194 ° F (90 ° C) or higher, or 14 ° F (-10 ° C) or lower, automatic operation may not occur. In this case, operate the wipers in any mode other than "AUTO". n If no windshield washer fluid sprays Check that the washer nozzles are not blocked if there is washer fluid in the windshield washer fluid reservoir. n Customization that can be configured at Toyota dealer Settings (e.g. switching operation when the vehicle is stationary) can be changed. (Customizable features →P. 532) 180 AVALON_U (OM41428U)