2008 Cadillac DTS Owner's Manual - Page 198

Charging System Light This light will come on briefly when you turn on the ignition, but the engine is not running, as a check to show you it is 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. It should go out once the engine is running. If it stays on, or comes on while you are driving, you may have a problem with the charging system. A charging system Driver Information Center (DIC) message may also appear. See DIC Warnings and Messages on page 3-73 for more information. This light could indicate that you have problems with a generator drive belt, or another electrical problem. Have it checked right away. If you must drive a short distance with the light on, be certain to turn off all your accessories, such as the radio and air conditioner. United States Canada This light should come on briefly when you turn the engine on. If it does not come on then, have it fixed so it will be ready to warn you if there is a problem. 3-58