1999 Buick Park Avenue Owner's Manual - Page 230

yellowblue Hazard Warning Flashers Press the button in to make your front and rear turn signal lamps flash on and off. Your hazard warning flashers work no matter what position your key is in, and even if the key isn't in. To turn off the flashers, press down on the button again. When the hazard warning flashers are on, your turn signals won't work. 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. Other Warning Devices If you carry reflective triangles, you can set one up at the side of the road about 300 feet (100 m) behind your vehicle. 5-2