2002 Buick Century Owner's Manual - Page 113

Electrochromic Automatic Dimming Rearview Mirror (If Equipped) One photocell on the front of the mirror senses when it is becoming dark outside. Another photocell, facing rearward, senses headlamps behind you. To turn the electrochromic feature off, press the button in the center of the mirror again. To keep the photocells operating well, occasionally clean them with a cotton swab and glass cleaner. Electrochromic Day/Night Rearview Mirror with OnStarR and Map Lamps (If Equipped) Your vehicle may have an automatic electrochromic day/night rearview mirror with the OnStar System. Your vehicle may have an electrochromic day/night rearview mirror. Push the button in the center of the mirror to turn this feature on. The mirror will darken gradually to reduce glare from headlamps behind you. This may take a few moments. The mirror's two outer buttons operate the lights on the bottom sides of the mirror. The automatic dimming feature is turned on or off by pressing the far left button, located on the lower part of the mirror face, for up to three seconds. When turned on, this mirror functions exactly like the electrochromic mirror described previously. See "Mirrors, Electrochromic Automatic Dimming" listed previously in this section for more information. 2-49