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how do I turn it off?

On my Citroen C5 the service light stays on and I get the warning 'Airbag Fault'.
Bob Edmonds, April 2009
It put on by your cars inboard monitor i.e computer thats why its there its telling you that there is a fault within, The only real way to get rid of the light is to let your dealer connect up to his system at the garage to turn it off

Ian Mechanic, April 2009
link Click here to see other fixes for Citroen C5.