1997 Buick Riviera Owner's Manual - Page 111
1997 Buick Riviera Manual
Page 111 highlights
Mirrors Inside Day/Night Rearview Mirror When youare sitting in a comfortable driving position, adjust the mirror so you can see clearly behind your it vehicle. Grip the mirror in the center to move up or down and side to side. day/night adjustment allows The you to adjust the mirror avoid glare from the lights to behind you. Pull the forward for daytime use; push tab it back for night use. Your Buick may have an automatic electrochromic day/night rearview mirror. This mirror automatically changes reduce glare from to headlamps behind you. photocell on the back the A of mirror senses when is becoming dark outside. Another it photocell built into the mirror surface, senses when headlamps are behind you.