[tonycarreon]

particle is correct. generally it means something is not "secured":
- center console
- doors
- front and rear trunk
- convertible top lock
- radio
- glove compartment (if applicable)
- passenger compartment (door not completely closed)

also, make sure you press the lock button only once. pressing it twice locks the car but deactivates the infrared sensor and emits a short beep.

if the system were faulty, it would beep twice, so as long as you hear one beep (and then see the red flashing light on the dash) your system is working but something's not closed.