I have exactly the same problem on our family car.
I was advised to see if the airbag light was due to the seat belt tensioner being disturbed by junk under the seats (supposidly a yellow sleeve). I have still to do this.
No idea about the horn yet. I was wondering if they were linked as well. The manual steers you away from changing relays. Could it be this element?
Did you get an answer at all?
Monday, August 24th, 2009 AT 7:27 AM