You have to change the whole switch. The local Ford dealer usually has these switches in stock. I believe the last one I bought was like $12.00. Just disconnect the battery and unbolt the nuts for the airbag on the backside of the steering wheel with a 10 mm 1/4" Drive socket.Then pull off the air bag assembly. once off just unplug it. The wires for the button are inside the steering wheel and the button itself just pushes into the wheel. just unplug it and pry the whole switch out of the steering wheel with a pocket screwdriver. Hope this helps.