Brake Master Cylinder problems of the 2010 Ford Edge

The contact owns a 2010 Ford Edge. The contact stated that while driving on multiple occasions at various speeds, she observed a hissing noise emanating near the brake pedal. Additionally, when the brake pedal was depressed, the brake pedal was firm, and the vehicle failed to stop as intended. The contact pumped the brake pedal and the vehicle rolled to a stop. The vehicle was towed to an independent mechanic where it was diagnosed that the brake master cylinder needed to be replaced. The vehicle was repaired but the failure reoccurred three hours later. The vehicle was taken to another independent mechanic where it was diagnosed that the power brake booster valve needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 98,000.

The contact owns a 2010 Ford Edge. The contact stated that while depressing the brake pedal, the vehicle failed to immediately stop. Additionally, the brake pedal felt spongy, with a hissing sound while depressing the brake pedal. The vehicle was taken to the local service center who diagnosed that power brake booster and master cylinder were faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 105,000.

Stiff braking,,had family drive it; they deemed it unsafe for me to drive. Had a mechanic look at it, he said it was the booster on the brake and suggested I take it in to my service person @ Ford as he thought there was a recall on it. When I told my service person, he said no, so I’m now taking it back to my trusted mechanic.

The contact owns a 2010 Ford Edge. The contact stated while driving approximately 30 mph and depressing the brake pedal, the vehicle failed to stop until the brake pedal had reached the floorboard. The contact stated no warning light was illuminated. The vehicle was diagnosed at a local mechanic but was not repaired. The manufacturer was informed of the failure and informed the contact that the vehicle was not included in a recall. The failure mileage was approximately 164,000.

I was told that my brake pads only needed to be replaced and that they had done it, when I picked up my vehicle, the brakes were extremely hard and I could not stop my vehicle, I took my car back and they stated my master cylinder was bad, they noted it on my invoice, but did not discuss it with me and gave me my vehicle without notifying. When I took my car back for repair, they cracked my windshield and vomited in my vehicle.

Brake booster had a vacuum leak. My car was outside the existing VIN list for recalls and/or "customer satisfaction program". Vacuum leak and stiff pedal was most evident at low speeds (near idle and at high vacuum conditions) Ford would not replace my booster. I replaced it myself and found that the oem booster had rusted, where the master cylinder seal (square cross-section o-ring) met, causing the leak and poor braking at low speeds. Master cylinder was in good condition, with no apparent leak - inside of booster was dry and clean. Replacing both the master cylinder and the booster has cured the problem. Problem was first noticed when parked - if my foot was on the brake, maintaining force, when I turned the ignition off, the vacuum immediately bled off of the brake booster, causing the pedal to rise and stiffen. Inspection of the booster prior to replacement did not give any evidence of an obvious problem (that is, no hissing or leaking sounds were present) the problem became more apparent over time (over the past 18 months) and got to the point where I felt that I did not have sufficient braking power to stop the vehicle at lower speeds - thus, my decision to replace the booster and master cylinder. In the last few weeks, the leak must have been getting worse, because the pedal was getting harder and harder to push down, with pedal effort increasing as the vehicle speed dropped (like approaching a stop sign) I am strong enough to push hard - but a small or frail person encountering this problem may not be able to stop in time.

The contact owns a 2010 Ford Edge. While driving 35 mph, the contact had to depress the brake pedal to the floorboard to stop the vehicle. The vehicle was taken to an independent mechanic where the brake booster and master cylinder were replaced. The dealer was not contacted. The manufacturer was contacted and was unable to provide assistance. The VIN was unknown. The failure mileage was 62,500.