My airbag warning light has come on all of a sudden and I've read a lot of things can cause this.  I was vacuming the car just before it happened so I'm guessing I put pressure on the passenger seat which has done it.

Only way to get it reset is to bring it back to a dealer, but not sure how much they're gonna charge...anybody had to get this done before?

I've also heard of a device called the Peake SRS Scan/Reset Tool.  It will plug into the diagnostic socket, tell you what the fault code is and what caused the airbag light to come on and will reset it for you.

I'm thinking also that it might be a good idea to get one of these at a cost of about €120 if it's going to happen more than once.