2004 Buick Park Avenue Owner's Manual - Page 126

Rainsense™ II Wipers If your vehicle has this feature, the moisture sensor is mounted on the interior of the windshield below 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 will operate in the delay, low speed and high speed modes. 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 delay position closest to OFF/MIST is the lowest sensitivity setting, level one. This allows more rain or snow to collect on the windshield between wipes. You can increase the sensitivity of the system and the frequency of wipes by turning the wiper control band away from you to the higher sensitivity levels. The highest sensitivity setting, level five, is closest to the LO position. A single wipe will occur each time you turn the wiper control band to a higher sensitivity level to indicate that the sensitivity level has been increased. The windshield wipers also remain in a "high park" position (the wipers are stopped on the windshield and are not in the normal park position), even when the ignition is turned off. Notice: If you do not turn off the windshield wipers when driving through an automatic car wash, you could damage the wipers. Always turn off the windshield wipers before entering an automatic car wash. The MIST and wash cycles operate as normal and are not affected by the moisture-sensing function. The system can be overridden at any time by manually turning the wiper band to LO or HI speed. Notice: Do not place stickers or other items on the exterior glass surface directly in front of the moisture sensor. Doing this could cause the moisture sensor to malfunction. 3-8