Oldsmobile 1999 Aurora - Manual (Page 210)

yellow blue
5-2
Hazard Warning Flashers
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.
Press down on the button
located on top of the
steering column, then
release it to turn on the
hazard warning flashers.
The HAZARD light on the
instrument panel will also
come on.
Your hazard flashers work no matter what position your
key is in, and even if the key isn’t in.
To turn off the flashers, press the button down again.
When the flashers are on, your turn signals won’t work.