Tl* the contact owns a 2009 lincoln mkz. while driving various speeds, the vehicle vibrated abnormally. the contact stated that the vehicle felt as if it were being driven on four flat tires. the contact was unsure of the origin of the vibration. the vehicle was taken to towne lincoln (3535 southwestern blvd, orchard park, ny 14127, (888) 377-0879) to be diagnosed, but the mechanic was unable to duplicate the failure. the vehicle was not repaired. the manufacturer was not notified of the failure. the approximate failure mileage was 139,000.