Horn when pushed, not remote, and cruise control working? If not post and can advise further! Also, with a flashlight, look 'closely' under drivers seat for any broken wires, green in color. Let us know!
The light can not just be "turned off.” This is a safety feature and the light is on because in the event of a collision the air bag/s will not deploy. The Safety Restraint System (SRS) will need to be diagnosed to determine the source of the problems and the correct repair. The diagnosis runs $ 59.95