One problem related to brake light on has been reported for the 2010 Mercury Mariner Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2010 Mercury Mariner Hybrid based on all problems reported for the 2010 Mariner Hybrid.
Brake warning light and a message on the dash saying "check brake system" intermitantly occur. Brakes seem to work normally. Restarting the car temporarily fixes the problem, only to occur again in several miles. The problem occurs at any time, standing or in motion.