1997 Lexus LX 450 Owners Manual - Page 37

SWITCHES WINDSHIELD WIPER AND WASHER SWITCH To make the washer squirt, push the button on the end of the lever. If the wiper lever is in the "OFF" position, the wipers will automatically operate a couple of times. If the washer does not work, check to see whether the washer tank is empty. For information on adding washer fluid, see "Adding washer fluid" on page 245. In cold weather, warm the windshield with the defroster before using the washer. This will help prevent icing, which could block your vision. "
Interval adjuster  Washer on To turn the wipers on, move the lever down until you reach the desired speed setting. The ignition key must be in the "ON" position. There are 3 settings: "INT" position: Intermittent operation "LO" position: Low speed operation "HI" position: High speed operation Twist the interval adjuster upward to increase the wiping time interval between sweeps, and downward to decrease it. The wiper lever must be in the "INT" position. 22 NOTICE Do not operate the wipers if the windshield is dry. It may scratch the glass.