2006 Cadillac STS-V Owner's Manual - Page 204

Passenger Safety Belt Reminder Light Several seconds after the ignition button is pressed to START, a chime will sound for several seconds to remind the front passenger to buckle their safety belt. This would only occur if the passenger airbag is enabled. See Passenger Sensing System on page 1-58 for more information. The passenger safety belt light will also come on and stay on for several seconds, then it will flash for several more. This chime and light will be repeated if the passenger remains unbuckled and the vehicle is in motion. Airbag Readiness Light There is an airbag readiness light on the instrument panel, which shows the airbag symbol. The system checks the airbag's electrical system for malfunctions. The light tells you if there is an electrical problem. The system check includes the airbag sensors, the airbag modules, the wiring and the diagnostic module. For more information on the airbag system, see Airbag System on page 1-48. This light will come on when you start your vehicle, and it will flash for a few seconds. Then the light should go out. This means the system is ready. If the passenger's safety belt is buckled, neither the chime nor the light will come on. If the airbag readiness light stays on after you start the vehicle or comes on when you are driving, your airbag system may not work properly. Have your vehicle serviced right away. 3-60