Service airbag warning

the car starts but the last time I drove it it had
the security light flashing and now when I
start it it says service airbags and has me
locked out of everything else for my digital
instrument cluster. I even took the negative
battery terminal off and let it sit overnight
and put it all back hooked it all back up and it
still says service airbag and won't let me I
can't even access my obdlink with my
scanner. The security light is off but no
blinkers and can't use the truck or the fuel
door can access it with my key fob or the
button on the dash. But it starts up and runs
fine just a lot of stuff ain't working and it says
service airbag