2005 Cadillac STS Owner's Manual - Page 199

This light tells you if there could be a problem with your engine oil pressure. Fog Lamp Light The fog lamps light will come on when the fog lamps are in use. This light will come on briefly when you start your engine. That is a check to be sure the light works. If it does not come on, be sure to have it fixed so it will be there to warn you if something goes wrong. When the light comes on and stays on, it means that oil is not flowing through your engine properly. You could be low on oil and you might have some other system problem. The light will go out when the fog lamps are turned off. See Fog Lamps on page 3-37 for more information. Lights On Reminder This light comes on whenever the parking lamps are on. Security Light For information regarding this light, see Theft-Deterrent System on page 2-20. See Headlamps on Reminder on page 3-35 for more information. 3-67