hi,check the wiring harness under the front seats.sometimes the conector can become detached.especially if you have had to move the seat to either extent.also if something has been pushed under either seat.if all conections are secure I suggest you take the care to a reputable garage for a code reading .any error codes can be associated with any one of the airbag modules fitted to your car.the light can also be reset if no code is presented by the diognostic equipment.expect to pay around 20 quid or 90 plus at a main dealership.
tranny granny, December 2011