1997 Buick Park Avenue Owner's Manual - Page 112

At night, when the glare is too high, the mirror will gradually darken to reduce glare (this change may take a few seconds). The mirror will return to its clear daytime state when the glare is reduced. Cleaning the Photocells Use a cotton swab and glass cleaner to clean the photocells when necessary. Setting the Mirror Compass Calibration Once the compass is calibrated,it does not need to be recalibrated as long as the mirror is left in your vehicle and the vehicle remains in the same geographical zone. To calibrate the compass: OFF: This setting turns offthe dayhight function and compass. The mirror will stay in the day mode. M: This turns on the dayhight portion of the mirror to automatically reduce glare. 1. Set the switch on the mirror control to C/M. 2. Turn the vehicle ignition switch on. If the letter C is not displayed in the mirror compass window, hold the CAL switch for more than 10 seconds. To hold in the CAL switch, insert a paper clip into the small hole on the bottom of the mirror housing. The display will show a number first, but keep holding until the letter C appears. C/M: This setting turns on the compass in addition to the dayhight function. The letter or letters displayed in the top right corner of the mirror indicate the direction in which you are traveling. Time Delay This feature prevents rapid changing of the mirror from the night mode to the daymode as you drive under lights and through traffic. Reverse Gear Day Mode The reverse mode is another important feature the of electrochromic mirror. When the shift lever is placed in REVERSE (R), the mirror changes to the day mode.This gives you a bright image in the mirror as you back up. 3. For quick calibration, drive the vehicle in a 360-degree circle at less than5 mph (8 km/h) until the display reads a compass direction. For normal calibration, drive the vehicle on your everyday routine, and the compass will eventually calibrate. 2-52