My airbag light comes on anywhere within 5-10 min. of starting my Jeep Liberty and doesn't go off until the engine is turned off. Does that indicate that my airbag won't work if I'm in an accident? The dealer wants $100+ to check it and if they can't find anything, it will go up from there. Does anyone know what the light really means? Will the airbag still work or should I have it checked?