2005 Buick LeSabre Owner's Manual - Page 148

Battery Warning Light When you turn the key to RUN, this light will turn on briefly to show that the generator and battery charging systems are working. Brake System Warning Light Your vehicle's hydraulic brake system is divided into two parts. If one part isn't working, the other part can still work and stop you. For good braking, though, you need both parts working well. If the warning light comes on, there is a brake problem. Have your brake system inspected right away. 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. United States Canada This light should come on when you turn the key to RUN. If it doesn't come on then, have it fixed so it will be ready to warn you if there's a problem. 3-38