Oilguy

Hey guys,
First time poster, long time lurker...

I've come across a problem in our 07 RDX w/ 54k on the clock and wanted to get some insight from you all. We've already been hosed by the dealer for $225 in diagnosis fees just to tell us we need a new drivers airbag ($900). The light is intermittent but most of the time on and really just want to know the chances of this thing really being a drivers airbag. I've come across quite a few posts here by people jiggling wires, replacing batteries, banging on seats etc for quick fixes. Do I trust what the dealer says and replace the airbag or is there some process of elimination? Thanks for your time!