Air bag light comes on intermdiately

It is the sensor located under the dashboard area. you can buy another one off the internet for 50.00. with instructions on how to remove the old one and then send it back for your deposit back. however, my light also comes on and off when the weather changes. i would ignore it unless it stays on for a few days. all it means is your airbag isnt working. i lived most my life without airbags.