1998 Cadillac DeVille Owner's Manual - Page 120

Mirror Operation Electrochromic Daymight Rearview Mirror with Compass (If Equipped) L To turn on the automatic dimmingfeature, press OW. AUTO. To turn off automatic dimming, press Your vehicle may have an electrochromic inside The green indicator light will be illuminated when this rearview mirror with a compass. feature is active. When set in the MIRROR position, this mirror automatically changesto reduce glarefrom headlamps Time Delay behind you. The automatic mirror has a time delay feature which prevents unnecessary switchingfrom the night back to of the day position.This delay prevents rapid changing the mirroras you drive underlights and through traffic. The mirror also includesan eight-point compass display in the upper right corner of the mirror face. When on, the compass automatically calibrates as the vehicle is driven. When cleaning the mirror, use a paper towel or similar Do material dampened with glass cleaner. not spray glass cleaner directly on mirror as that may cause the the liquid cleaner to enter the mirror housing. Cleaning the Photocells Use a cotton swab and glass cleaner to clean the photocells when necessary.