This is the second time this month the service air bag system warning came on and then it disappears. It happened 2 weeks ago, I got something about the abs system and the airbag system and it went away and then today I backed into my driveway and when I put the truck in park just the airbag system warning came up. I put the truck back in drive and it disappeared. Battery voltage seems fine, battery was replaced last year. It isn't something that happens all the time, just wondering if anyone else has experienced this. I have my electronic parking brake to engage when I put the truck in park as well. Never been an issue. I read somewhere it is a code that clears when you shut off the truck. Any ideas or experiences with this please let me know. Thanks in advance.