2010 Cadillac DTS Owner's Manual - Page 226

If the light comes on and stays on, it means that oil is not flowing through the engine properly. The vehicle could be low on oil and it might have some other system problem. Lights On Reminder This light comes on whenever the parking lamps are on. Security Light For information regarding this light and the vehicle's security system, see Content Theft-Deterrent on page 3-19. See Exterior Lamps on page 4-25 for more information. Cruise Control Light Fog Lamp Light The fog lamp light comes on when the fog lamps are in use. The light goes out when the cruise control is turned off. See Cruise Control on page 4-12 and Adaptive Cruise Control on page 4-15 for more information. The light goes out when the fog lamps are turned off. See Fog Lamps on page 4-30 for more information. This light comes on whenever the cruise control is set. 4-60