Two problems related to brakes failed have been reported for the 2008 Mercury Mariner. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Mercury Mariner based on all problems reported for the 2008 Mariner.
Driving, coming to a stoplight, the brakes suddenly failed, the brake pedal went all the way to the floor. Pumping I was able to get just enough brakes to stop before colliding with the car in front of us. The service abs and emergency brake service warning lights came on after the near collision. I took the car to a Ford dealership and was told the hcu unit had failed. This is a $4,000 part that we had already replaced at 76,000 miles,. The new part failed again without warning only 22,000 miles later.
Abs and regen brakes disabled warning lights went on when starting car from parked position; have been advised by Ford dealer and on line reports by car owners that brakes can fail and we should not drive the car. Replacing regen brake system more than 6k ; this is a safety problem requiring manufacturer recall;.