My message system says my airbag system is not working because my battery voltage is up and down but when the car is not started its at 12 constant volts when started at 13 doesn't fluctuate nothing battery was replaced on 1-14 and I don't know what it is my airbag lights not on or nothing on my dash

 

Could this message be stored from when you replaced the battery? When batteries go they cause all kind of wired things to happen in these cars. Try deleting the message and see if it comes back.

 

I have this same issue. I didn't clear it, but my headlights will start flickering as the airbag light on the dash flickers. My radio also makes a loud intermittent pop. Then it will go back to normal as if nothing ever happened. It has happened to me a few times in the past week or so. I am thinking about taking it to the dealer but didn't want to fork over money unnecessarily.