Hello, my wife drives our '01 Durango on a regular basis. Last weekend I was driving it and the 'air bag' light in the cluster would come on with a tone periodically then go off. It didn't seem to have any set time frame. Sometimes longer between coming on. Then after a while it stopped coming on. Once I shut off the vehicle and restarted it would do it again. Any opinions on what would cause this and what to look for?? Thanks in advance for any help. Kevin