2002 Cadillac DeVille Owner's Manual - Page 281

Hazard Warning Flashers The hazard warning button is located on the center of the instrument panel between the two air vents. The light in the center of the button will flash, indicating that the hazard warning flashers are on. Your hazard warning flashers let you warn others. They also let police know you have a problem. Your front and rear turn signal lamps will flash on and off. Your hazard warning flashers work no matter what position the key is in, and even if the key isn't in. Press the button to make the front and rear turn signal lamps flash on and off. Press the button again to turn the flashers off. When the hazard warning flashers are on, the turn signals won't work. 5-2