what i think the problem is someone has had the cluster out at some point and mixed up the bulbs for the bulb out indicator and the srs light, those bulbs can be moved and still work, they just light up the wrong icon, i had one where someone switched the check engine light and the bulb check light so the car would pass emmisions inspection, everything was ok until a bulb went out,a brake light bulb failed so then the check engine light would come on everytime the brake was pushed. i think you are having something similar happen