2009 Buick Lucerne Owner's Manual - Page 150

Windshield Wipers Turn the band with the wiper symbol on it to control the windshield wipers. Rainsense™ II Wipers If the vehicle has this feature, the moisture sensor is mounted on the interior of the windshield beside the rearview mirror and is used to automatically operate the wipers. This system operates by monitoring the amount of moisture build-up on the windshield. Wipes occur as needed to clear the windshield depending on the driving conditions and the sensitivity setting. In light rain or snow, fewer wipes will occur. In heavy rain or snow, wipes will occur more frequently. The system operates in the delay mode. If the system is left on for long periods of time, occasional wipes may occur without any moisture on the windshield. This is normal and indicates that the Rainsense™ system is active. The Rainsense™ system is activated by turning the wiper control band to one of the five sensitivity levels within the delay area. The position closest to off is the lowest sensitivity setting, level one. This allows more rain or snow to collect on the windshield between wipes. Turning the wiper band away from you to higher sensitivity levels increases the sensitivity of the system and frequency of wipes. The highest sensitivity setting, level five is closest to low. A single wipe will occur each time you turn the wiper stalk to a higher sensitivity level to indicate that the sensitivity level has been increased. Notice: Going through an automatic car wash with the wipers on can damage them. Turn the wipers off when going through an automatic car wash. 8 (Mist): For a single wiping cycle, hold it on mist until the wipers start, then release. The wipers stop after one wipe. For more wipe cycles, hold the band longer. 6 (Delay): Use to set the delay time between wipe cycles. The wiper speed can be set for a long or short delay between wipes. The closer the band is set to the top of the lever, the shorter the delay. (Low Speed): For steady wiping at low speed. 6 1 (High Speed): For high-speed wiping. Turns the wipers off. 9 (Off): Clear ice and snow from the wiper blades before using them. If the wipers are frozen to the windshield, carefully loosen or thaw them. If they become worn or damaged, replace with new blades or blade inserts. Heavy snow or ice can overload the wiper motor. A circuit breaker will stop the motor until it cools. The vehicle has wiper-activated headlamps. After the windshield wipers have completed eight wipe cycles within four minutes, the headlamps automatically turn on. See Wiper Activated Headlamps on page 3-16 for more information. 3-10