2013 Cadillac ATS Owner Manual - Page 130

5-20 Instruments and Controls If the ABS light is the only light on, the vehicle has regular brakes, but the antilock brakes are not functioning. If both the ABS and the brake system warning light are on, the vehicle's antilock brakes are not functioning and there is a problem with the regular brakes. See your dealer for service. See Brake System Warning Light on page 5‑18 and Brake System Messages on page 5‑33. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then turns off. This light comes on green when the system is on and ready to operate. When the system determines that the vehicle is leaving its lane without using the turn signal, this light will change to amber and flash. See Lane Departure Warning (LDW) on page 9‑62. Antilock Brake System (ABS) Warning Light This light comes on briefly when the engine is started. If the light does not come on, have it fixed so it will be ready to warn if there is a problem. 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 off the vehicle. 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. A chime may also sound when the light comes on steady. Lane Departure Warning (LDW) Light Vehicle Ahead Indicator If available, this light briefly comes on amber while starting the vehicle. If available, this light in the Driver Information Center (DIC) displays green when a vehicle is detected ahead.