[Shotimes] Air Bag Light Blinking?

[DAVE]

My wife has been driving the 90 the last two days and today she said the air bag light started blinking at her. Seeing how she is blonde I said the car was just saying hello. 
I just went and filled it up and it blinked at me 3 on pause 3 on pause 3 on pause. I've not had the chance to run it down yet anyone got a good idea what it may be?
Reply to me direct and take shotimes out of the subject line. I'm not in front of the machine much and I'm not keeping up with the list right now.
Dave