1993 Buick Park Avenue Owner's Manual - Page 108

Mirrors Inside Mirror Manual When you are sitting in a comfortabledriving position, adjust themirror so you can see clearly behind your car. The day-night adjustment allowsyou to adjust the mirror to avoid glare from the lights behind you. 1 Automatic Your Buick may have the automatic inside mirror. The automatic mirror adjusts for the glare of headlights behind you. It detects changes in light, and then adjusts for day or night operation. I PI\, 7'- DAY-NIGHT ADJUSTMENT Polr --! During the day the mirror reflects all the light from behind your car. At night, when the glare is too high, it changes to the night mode. Then, it reflects only part of the light from behind you. When the mirror changes to the night mode, it holds that position until glare is no longer present.