One problem related to brake master cylinder has been reported for the 2012 Lincoln Navigator. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Lincoln Navigator based on all problems reported for the 2012 Navigator.
Brake booster and master cylinder no good. Brake fluid costently disappearing, no leaks under truck but once empty or close to low line have to press breaks to the floor just to try and slow down to stop. . . Both in city and highway, in motion and while parked.