1996 Buick Park Avenue Owner's Manual - Page 107

Electrochromic Day/Night Rearview Mirror At night, when the glare is too high, the mirror will gradually darken to reduce glare (this change may take a (Option) few seconds). The mirror will return to its clear daytime state when the glare is reduced. Press the button at the base of the mirror to turn on the automatic feature. The button has an indicator light to show it is on.Press the button again to turn the automatic feature off. Time Delay The automatic mirror has atime delay feature which prevents unnecessary switching from the night back to the day position. This delay prevents rapid changing of the mirror as you drive under lights and through traffic. Your Buick may have an automatic electrochromic day/night rearview mirror. This mirror automatically changes to reduce glare from headlamps behind you. A photocell on the back ofthe mirror senses when it isbecoming dark outside. Another photocell built into the mirror surface, senses when headlamps are behind you. Reverse Gear Day Mode The reverse day mode is another important feature of the electrochromic mirror. When you shift into REVERSE (R), the mirror changes to the day mode. This gives you a bright image in the mirror as you back up. Cleaning the Photocells Use a cotton swab andglass cleaner to clean the photocells when necessary.