2009 Lexus SC 430 Owners Manual - Page 128

2-3. Operating the headlight and windshield wipers n Windshield wiper and washer operating conditions The key must be turned to ON. n Intermittent operation features The time interval between sweeps decreases as vehicle speed increases. When vehicle speed exceeds 12 mph (20 km/h) with the interval adjusted in the lowest position, the time interval is set to the minimum 1.5 seconds. If you stop the vehicle with the wiper switch in the "LO" position, the wipers automatically change to intermittent operation.* This will not happen if the interval adjuster is set to the lowest position. *This feature can be deactivated. (→P.359) n Windshield wiper features l When the washer button is pressed with the wipers OFF, the wipers will make 3 sweeps, then pause, then a final sweep to completely clear the windshield*. The length of the pause will depend on the vehicle speed. The last sweep will not happen if the vehicle is traveling above 106 mph (170km/h). *The last single sweep can be deactivated. (→P.359) l When the outside temperature is below 77 °F (25 °C), operating the wind- shield wipers will automatically turn on the rear window and outside rear view mirror defoggers. l When the windshield washer button is pressed with the headlights on, the head- light cleaners automatically operate once. n If no windshield washer fluid sprays Check that there is washer fluid in the windshield washer fluid reservoir, and that the washer nozzles are not blocked. 130