2011 Buick Lucern Owner's Manual - Page 189

If the light comes on while driving, pull off the road and stop carefully. The pedal can be harder to push, or the pedal could go closer to the floor. It could take longer to stop. Try turning off and restarting the vehicle one or two times, if the light is still on, have the vehicle towed for service. See Towing Your Vehicle on page 5‑23. English Metric Antilock Brake System (ABS) Warning Light For vehicles with the Antilock Brake System (ABS), this light comes on briefly when the engine is started. This light should come on briefly when the engine is started. If it does not come on then, have it fixed so it will be ready to warn if there is a problem. When the ignition is on, the brake system warning light also comes on when the parking brake is set. The light will stay on if the parking brake does not fully release. If it stays on after the parking brake is fully released, it means there is a brake problem. { WARNING: The brake system might not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to a crash. If the light is still on after the vehicle has been pulled off the road and carefully stopped, have the vehicle towed for service. If it does not, have the vehicle serviced by your dealer. If the system is working normally the indicator light then goes off. If the ABS light stays on, turn the ignition off. If the light comes on while driving, stop as soon as it is safely possible and turn the ignition off. Then start the engine again to reset the system. If the ABS light stays on, or comes on again while driving, the vehicle needs service. If the regular brake system warning light is not on, the vehicle still has brakes, but not antilock brakes. 4-33