2002 Buick LeSabre Owner's Manual - Page 113

Battery Load Management The battery load management feature is designed to monitor the vehicle's electrical load and determine when the battery is in a heavy discharge condition. During times of high electrical loading, the engine may idle at a higher rpm setting than normal to make sure the battery charges. High electrical loads may occur when several of the following are on: headlamps, high beams, rear window defogger, fan at high speed, heated seats (if equipped) and engine cooling fans. If your vehicle's battery remains in a heavy discharge condition for a long period of time, the fan, rear defogger, heated seats and heated mirrors will be disabled and the DIC will display BATTERY SAVER ACTIVE. This can happen either under long periods of idling or low speed driving with high electrical loading, or in the event of a charging system fault. Electrochromic Day/Night Rearview Mirror (If Equipped) Your vehicle may have an automatic electrochromic day/night rearview mirror. Your vehicle's mirror may also contain OnStarR controls. This is the on/off button for mirrors equipped with OnStar controls. When this feature is turned on, the mirror automatically changes to reduce glare from headlamps behind you. A photocell on the mirror senses when it is becoming dark outside. Another photocell built into the mirror face senses when headlamps are behind you. At night, when the glare is too high, the mirror will gradually darken to reduce glare (this change may take a few seconds). The mirror will return to its clear daytime state when the glare is reduced. Mirror Operation To turn on the automatic dimming feature, press AUTO (or the on/off button for mirrors equipped with OnStar controls). To turn off automatic dimming, press OFF (or the on/off button for mirrors equipped with OnStar controls). The indicator light will be illuminated when this feature is active. Mirrors Day/Night Manual Rearview Mirror When you are sitting in a comfortable driving position, adjust the mirror so you can see clearly behind your vehicle. The day-night adjustment allows you to adjust the mirror to avoid glare from the headlamps behind you. 2-50