One problem related to service brakes has been reported for the 1998 Lincoln Navigator. The most recently reported issues are listed below.
The contact owns a 1998 Lincoln Navigator. While driving approximately 65 mph, the rear of the vehicle independently swayed from side to side without warning. In addition, the contact mentioned that the brake pedal was depressed, but failed to respond and the rear of the vehicle began to scrape across the ground. The contact mentioned that the vehicle stopped independently. After inspecting the vehicle, the contact discovered that the lug nuts on the rear passenger side wheel fractured and caused the wheel to disengage from the vehicle. The entire rear of the vehicle was fractured. The vehicle was towed to the dealer where it was diagnosed that the frame, the drive shaft, the trans axle, the transfer case, the rear axle, the bearing, and the rear lug nuts needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 69,000.