My wife is very petite (4'11" and around 95 pounds). So, when she sits in the passenger seat, most of the time the passenger air bag system does not engage and the warning light comes on. It seems like she is right at the cusp of the weight/height limit. I understand that the system is designed so that is not dangerous for children. However, I definitely want a passenger air bag that would deploy in an accident if my wife is sitting in the seat (especially if she is right at the limit). My question is if the sensors can be manually adjusted? Is there the possibility that the sensors in my car are not calibrated correctly, given the height/weight of my wife? Thanks.