Air Bag On-off Switch problems of the 2003 Lincoln Navigator

The contact owns a 2003 Lincoln Navigator. The contact stated that the air bag warning lamp illuminated. Also, a "check the suspension" message illuminated indicating that the rear shocks failed to work. The vehicle was taken to a dealer, who indicated that the passenger side running board switch needed to be replaced. The vehicle was repaired, but the failure recurred. The vehicle was taken back to an authorized dealer several times; however, the technician was not able to replicate and diagnose the failure. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 55,000.