Here is my airbag light story:

In 2016, I was putting the top up and was lazy, so I did not start the engine first. As the top was going up, the pump cycles on and off, causing system voltage to sag and spike. WHen it tried to lift the tonneau cover, the pump stalled, causing another spike in the battery feed. I had to manually put the top up.

What does this have to to with the airbag? Well, the voltag e spike destroyed the airbag module - I have an airbag light now. So, investigation showed the airbag module wont communicate at all now, it has died. I have an 07, 2007-2008 cars (in the USA) have a different module than 2004-2006, which is the only module I can find. They can be reprogrammed to your car, but they must be the right model.

RESOLUTION:
I pulled fuse 3 in the underhood fuse box, this made the light go out.
I do not need an airbag.
I never had my Takata airbag replaced because if I take it in, they will replace the airbag and see that the module is bad. Since the car is out of warranty, it would be a billable repair for the module to be replaced, assuming they can get one. Some dealers will refuse to release the car to you for "liability reasons" unless you agree to the repair.

Just keep these thoughts in mind.

If I ever sell the car (I won't) I will tell the new owner they have non-functioning airbags.