Tl* the contact owns a 2008 audi a5. the contact stated that the driver's side air bag sensor and the parking brake warning light was illuminated. in addition, the horn had failed. the vehicle was diagnosed by an independent mechanic, who determined that the defects were all caused by a faulty steering wheel spring column. the vehicle was not repaired. the manufacturer was notified of the failure. the failure mileage was 35,000.