2003 Buick LeSabre Owner's Manual - Page 158

Battery Warning Light If the air bag readiness light stays on after you start your vehicle, it means the air bag system may not be working properly.The air bags in your vehicle may not inflate in a crash, or they could even inflate without a crash. To help avoid injury to yourself or others, have your vehicle serviced right away if the air bag readiness light stays on afteryou start your vehicle. ~~~ ~~ VOLT When you turn the key to RUN, this light will turn on briefly to show that the generator and battery charging systems are working. If the light stays on, a chime will sound indicating that the vehicle needs service. You should take your vehicle to the dealer as soon as possible. To save the battery until you get there, turn off all accessories and set the climate control system to OFF. The air bag readiness light should flash for a few seconds when you turn the ignition key to RUN. If the light doesn't come on then, have it fixed so it will be ready to warn you if there is a problem. 3-37