37 problems related to brake master cylinder have been reported for the 2012 Ford Edge. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Ford Edge based on all problems reported for the 2012 Edge.
The brakes began to make a hissing noise every time they were applied. The Edge would die when sitting at stop lights and my brakes had to be pumped multiple times to get the vehicle to stop. The problem worsened and my "service info trac system" light would periodically come on. I have replaced the brake booster for 536. 00 now to find out the master cylinder is also defective and must be replaced . . . Which is another 300. 00. . . . . . . . . . . . . . . . . . I have had close calls trying to stop my car , especially if there's a hill. I am very very unhappy with Ford and my Edge at this point. Ford should fix this crap under defects!!!!! no more Fords for me . . . This will be my last!.
Sept 2013 - brake pedal went to floor in reverse with very little response. Moving forward almost no response from brakes and almost hit a car crossing in front. At the Ford dealer, the component test master cylinder failed and also noted with brake pedal whistle noise when pedal completely on the floor. Replaced the booster and master cylinder under warranty. July 2014 - brake problem intermittently recurs. Brake pedal sometimes goes all the way to the floor when the car is started. Ford dealer could not replicate problem. July 2015 - at car start, brake is very firm then slowly goes all the way to floor. This occurs about every other time the car is started. This appears to be the same issue described in the recent Ford f-150 investigation of the electric vacuum assist pump.