Buick 2004 Rendezvous - Manual (Page 146)

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.
The hazard warning flasher
button is located on top of
the steering column.
Your hazard warning flashers work no matter what
position your 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.
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