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Brake Master Cylinder Problems of Ford Fusion - part 1

Ford Fusion owners have reported 73 problems related to brake master cylinder (under the service brakes category).

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 1
Failure Date: 09/01/2017

Tucson, az. City driving; potholes and sand on roadways common. No evasive or avoidance skidding preceded poor brake performance. Brake pedal must be pushed nearly to the floor to get brake action, which is only partial brake effectiveness. Brake repair shop replaced master cylinder - no change in brake performance. Brake repair shop then replaced abs hydraulic control unit - brake performance returns to normal. Brake shop advised abs can activate with cause, then hcu valve sticks open, creating reported condition.

See all problems of the 2008 Ford Fusion.

car image   Brake Master Cylinder problem of the 2015 Ford Fusion 2
Failure Date: 08/20/2017

Soft and low brake pedal. So I have a2015 Ford Fusion se I recently changed my pads and rotor on. While on,the lift my battery died. After putting it back together ansld boosting my car I then had a soft brake and the pedal would not engage until extremely far down, I have shop has bled the system numerous times changed the master cylinder and still nothing. I was told it could,be a caliper doing,this and ialso,seen online it could be the abs mod. Everything I have read is leading to the abs module but nothing can be proved so I'm left to dump money in parts and hope it gets fixed. Fixing tgungs that are not broke is insane in my eyes. . . . . .

See all problems of the 2015 Ford Fusion.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 3
Failure Date: 08/05/2017

Have had 2 incidents of abs engagement followed by loss of brakes, where pedal went down to the floor. First time was in February of this year. Road conditions were slick and the car slid slightly. Abs was activated and then there was loss of brakes. Had the car towed to a local mechanic and the whole brake system was inspected. All that was found was some air in the lines and brake pressure came back. Rotors, pads, calipers, master cylinder were fine. Second incident happened August 5th while going on vacation. Was about an hour from home when I slowed down to go through a toll booth. Road was wet and I hit a slight bump going through the toll. After I got through the toll, brake pedal sunk to the floor! I then exited the turnpike and headed back home and drove it back an hour with no brake pressure. Fortunately it was early morning and traffic wasn't heavy. I got home, switched all of the luggage into my other car and I called a friend who works on cars and he said I could drop it off and he would look at it while we were on vacation. While he had it, the brake pressure came back. But again entire braking system was inspected and nothing wrong was found. There has to be a glitch in the abs. The first five years I had the car, nothing like this ever happened. Other on line postings I've read describe similar situations happening when the vehicle has 60,000 or more miles on it. My vehicle is at 60,000. Ford needs to look into this! does someone have to get seriously injured or killed before they take any action?.

See all problems of the 2009 Ford Fusion.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 4
Failure Date: 07/12/2017

I was driving down the highway at 70pmh, tried to slow entering a curve onto another highway, 271s to 71s, in ohio and had to hit my brakes hard because traffic jammed suddenly. I didn't have brakes at all, my abs never kicked in. I went off the side of the highway and even then couldn't stop with my foot all the way down. I nearly hit the person in front of me going about 50+. I took it directly to my mechanic who replaced my master cylinder again (2x in 5 months) and after he was done the pedal no longer brakes properly. When attempting to stop the pedal is nearly to the floor. It is akin to not having pedals at all. I have to stand on it to stop and even then its the panic feeling of being unable to stop. This is an issue that could kill and I've read many other stories of people with similar issues with braking. Ford said that happens sometimes when my mechanic called and gave no further reasoning to it. I don't feel safe driving a car I've had a year that's not even a decade old.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 5
Failure Date: 05/12/2017

No brakes . . . . My car has been basically yard art for several months . . . . Have had issues with spongy brakes for years if I had to stop suddenly and the abs brakes where engaged . . . Then the brakes would go spongy. . Another time I didn't even know if the car was going to stop I slide instead of stopping . . . This past may 2017 I was in traffic and a car pulled out in front of me had to slam my brakes on and I barely got stopped ! scared me to death . . Brakes were extremely spongy by the time I made it home I didn't have any brakes at all !!! my husband replaced brake pads , calibers, master cylinder , and rotors ! well over $700 I paid out . Still have no brakes at all . This is a safety issue why is nothing being done ????? I'm the only income my family has and now I have a car almost paid for that just sits !!! it's yard art prett much . . . . I am spending a fortune to get to work and back and can't afford the $500 for theabs module / pump not to mention the cost to have it put on !!! this is horrible . . . I'm already die hard Ford girl but after his experience I will never buy another one . . . .

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 6
Failure Date: 05/05/2017

Brakes were operational w/ normal function/ response. I firmly pressed the pedal, to avoid a pothole, traveling over a railroad crossing. Immediately thereafter, the brakes became/remain 30% effective, w/ no loss of fluid. I've had my mechanic replace the abs module & master cylinder to no avail/ success. I'll now take to dealer for diagnostics, so I may unload/sell immediately thereafter repairs.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 7
Failure Date: 03/10/2017

The contact owns a 2008 Ford Fusion. While driving 45 mph, the master cylinder and brake booster malfunctioned. The contact loss complete control of the brake functionality and had to engage the emergency brake to come to a complete stop. It was diagnosed that the failure was due to the master cylinder or brake booster control. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 79,597.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 8
Failure Date: 03/06/2017

The contact owns a 2008 Ford Fusion. While driving approximately 10 mph, the contact drove over a bump and lost braking ability. The contact stated that the brake pedal traveled to the floor. The vehicle was taken to an independent mechanic who diagnosed that the master cylinder needed to be replaced. The failure mileage was 72,000.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 9
Failure Date: 03/02/2017

I have experience a soft brake pedal during/after going over a bump, and its occurs randomly and has happen to me a few times. I have had numerous components replaced and even after taking to the dealer and having the brake line go through a bleeding the issue did not resolve. . Read more...

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 10
Failure Date: 03/01/2017

Brake pedal collapsing before brakes engage. Replaced vacuum booster and master cylinder in attempt to repair. Slightly improved but condition still exist, diminishing brake effectiveness. I relied on reputable shop for these repairs and spent $700 for only partial improvement. Google search indicates a failure in the abs valving. Unknown if abs works in this condition. Abs was severely engaged within weeks before failure. See the following from google "2008 Ford Fusion soft brake pedal. This video describes all circumstances perfectly, other than on this car, the brake pedal is constantly diminished at any speed whenever driven. . Read more...

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 11
Failure Date: 02/12/2017

While driving in my neighborhood I hit a rough spot in the road and my brake pedal went to the floor I could barely stop the car. I took the car to a local shop and they replaced the master cylinder and brake booster. Still no brakes, they replaced the abs module with a used unit a new one is 1300. 00 dollars and that fixed the problem 1168. 00 dollars later. I called Ford and if they could help me with the cost of this and they said it was not a recall. I will not be purchasing a Ford product in the future. The abs module in these cars are defective.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 12
Failure Date: 02/05/2017

For around 8 months, often while braking my brake pedal will lose pressure and go almost to the floor. It doesn't lose all pressure but makes for a difficult stop. This has caused me several times to almost rear end other cars and not be able to slow down enough while taking corners. It happens in motion highway and city. More so on bumpy roads or harder braking. My mechanic, which is at a Ford dealer checks everything out for me every oil change. He states that there are no leaks and the master cylinder if functioning properly. I believe it was the hydraulic control unit that he suggested could be the issue. There are numerous complaints online about similar year cars having the same issue. I consider this a serious safety issue, I believe the reason I haven't had an accident is that I'm used to the issue now, but I believe it's a matter of time before an accident happens.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 13
Failure Date: 01/15/2017

Once my antilock brakes kicked in this winter, my brake pedal never went back to normal. It is very mushy and sometimes when going slowly down a small incline (I. E. Exiting a parking lot), or over rough roads, it is hard to brake. In 2015 the exact same thing happened - my abs system kicked in once during winter and my brakes were mushy. Except that time, carx did a free brake examination, couldn't find the problem but when I got the car back. The brake pedal was firm again. This time, in 2017 I took to Ford dealership and so far, they have no idea what is wrong with it. Carx thinks I need a whole new hydraulic cylinder unit for abs and/or master cylinder.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 14
Failure Date: 01/04/2017

2008 Ford Fusion 100,000 miles first of all my car is still in drivable . . . I'm on a fixed income and I have already replaced the brakes,rotors,master cylinder ! my brakes have had issues for about a year . Come to a stop just a regular stop ( like a top light ) brakes go clear to the floor . This has been going on for a year . The last event was in Jan 2017 went to come to a stop in heavy traffic and I almost re ended the car in front of me . My brakes were all the way to the floor literally no brakes at all . Made it home and my son started replacing everything as mentioned above . . . . . Now still no brakes at all clear to the floor . The abs control module is the only thing not replaced ( which should be a damn recall ) I feel the only reason Ford hasn't done a recall is because of the cost . I'm already out $1000. 00 now another $1000. 00 part plus the labor . I'm 68 and fixed income no car since Jan this is ridiculous! I won't purchase another Ford and that's all I've purchased in my 68 years !!!!.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 15
Failure Date: 01/04/2017

Investigation opened 12/20/16 on 2009-2011 Fusions for soft brakes after abs deployment I suggest you add the 2008 year model as I have been experiencing the same problem. One month ago, the shop replaced the master cylinder to "fix" the problem, which worked until yesterday when the abs activated again.

car image   Brake Master Cylinder problem of the 2010 Ford Fusion 16
Failure Date: 12/15/2016

Brakes went soft, replaced the master cylinder then I didn't have any brakes at all. Took it to my mechanic and he thinks the abs system is bad, I read a lot of comments on line to see that this is a common problem. I did stop on snow and the abs system work then after that the brakes went soft.

See all problems of the 2010 Ford Fusion.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 17
Failure Date: 12/14/2016

Brakes have become spongey and a lot of pressure is needed to engage the brakes. The master cylinder and the rotors and brake pads have been serviced and inspected. The Fusion has done this multiple times and now has stayed consistently spongey. All services have been done through the Ford dealership.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 18
Failure Date: 12/12/2016

As stated in NHTSA action number: pe16017, my car is having the same issue of the brakes going to the floor and not being able to build brake pressure. I have fixed/replaced every brake component (calipers, brake booster, master cylinder) but have not replaced the abs control module. All research leads to this being the issue of the valves sticking open and causing not brake fluid pressure to build.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 19
Failure Date: 12/09/2016

I was driving on a snow covered road and went to brake and the abs kicked in like it should, so everything was normal. Then afterwards the brake pedal felt soft and would just about go to the floor when it would be depressed. I did not lose my braking power all together but I would have to pump the brakes or begin to stop far in advance to be able to stop like normal. It was like that for about two weeks and then one day the brake pedal went back to normal, but this is the second time in two years that this has happened and it worries me that this will happen again. I have looked into the situation and from what I've read it seems that it's a problem with the abs control module and is pretty common. Most people and even dealerships diagnose this as a faulty master cylinder, worn rotors and a number of other things and they end up replacing what they thought was the issue only to have the same problem occur again! I have not replaced anything in relation to this problem due to the fact of my brakes going back to "normal" and the abs control module being so expensive to fix. So I am taking my chances that this will not happen again until there is a recall on this issue. I believe it is a safety concern because although I did not lose my brakes all-together, I did lose most of my braking power and it could happen again at a time where I need to stop quickly and don't have time to pump the brakes.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 20
Failure Date: 11/30/2016

This is the second time we've had issues with the braking system on our 2009 Ford Fusion. The first occurrence was in August 2016, the second on November 30, 2016. This last time I took the vehicle to the local Ford dealer and had them do a thorough diagnostic check on the braking system. The dealership says there is nothing wrong with our brakes that they can document or replicate. However, the failure of the breaking system, temporarily, nearly caused an accident for my son this week. Back in August it was my wife that had the episode. In August she was driving on a wet blacktop four-lane divided highway and hit the breaks for a car slowing in front of her. Immediately she had almost no breaking function, with the pedal being extremely soft and going almost to the floor. This was not a case of pulsating abs action like normal. She was able to pump the brakes aggressively for a while and gradually get back enough breaking function to drive the car home. On inspection the brake reservoir was full. This week, the same thing happened on a perfectly dry concrete four-lane divided highway during a braking action when preparing to make a turn onto a side road. He nearly hit a brick sign at the college campus entrance. He pumped the brakes repeatedly and gradually had enough breaking function return that he could drive slowly to the parking lot. I took off work and drove down to meet him and tested the vehicle. The master cylinder was full to the normal level. There was no sign of leaking on any of the calipers or on the ground below. The brake pedal was still very soft but after pumping gradually returned to normal so that I could drive the vehicle home very slowly. We've now almost had two accidents when the brakes fail temporarily and without warning, then gradually return to normal operation. What is going on here? this is really scary and frustrating.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 21
Failure Date: 11/18/2016

The brakes do not function properly. During any driving, the first third of typical brake pedal press is normal and the vehicle brakes normally. However the middle third does nothing additional to brake the vehicle and the last third brakes aggressively. I have recently replaced the brake pads, serviced the rotors, replaced the master cylinder, and bled the brake lines. None of these services have correct the issue. I have read many forums where other users were experiencing the same problem with the final solution being replacement of the abs control module; a very expensive part to replace.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 22
Failure Date: 11/04/2016

I purchased this used car on sept. 28, 2016. Five weeks later, on Nov. 4, I was nearing a red light on a city street and began to brake. Unexpectedly, the abs engaged and I found myself without any braking power. I had to push the brake pedal to the floor until the car eventually stopped approximately 12-15 feet later. If another car or a person had been in front of me, I would have hit them. I immediately contacted the Ford dealership where I bought the car (autonation Ford of white beat lake, minnesota), told them what happened and then drove my car slowly to the dealership where they kept it for four days. They replaced the master cylinder and I was led to believe that that was the end of the problem. The dealership claimed that they didn't know what else might have caused such a braking problem. Five weeks later, on Dec. 10, 2016, the same thing happened on another city street as I approached a red light except this time the abs engaged because the road was semi-slippery after a snowfall and I had to brake a bit harder. Again, the brakes didn't work properly and I had to press them to the floor. My car ended up sliding through the intersection (against a red light) before coming to a stop. Luckily, there wasn't any other traffic or obstacles in the intersection or I would have hit them as well. I did some research on the internet and discovered that there have been numerous similar complaints with Ford Fusion abs systems, including a number of complaints made to NHTSA. (there's also a video about the problem at youtube. ) I discovered that the problem is often misdiagnosed and that the cause if a faulty/defective abs hydraulic control unit needing to be replaced in a significant number of Fusions built within the last several years. These Ford Fusions with faulty abs need to be recalled before there are injuries and fatalities, if there haven't been already.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 23
Failure Date: 10/21/2016

When pressing brake pedal at any speed the pedal goes all the way to the floor. When I took to dealer for repair they told me that the problem was due to master cylinder. I paid over $800 for repair but the problem persists. Now dealer is telling me it could be the abs. They are asking for an additional $1000 to fix. Help me? I am continuing to drive the car.

car image   Brake Master Cylinder problem of the 2009 Ford Fusion 24
Failure Date: 10/12/2016

Brakes go to the floor at different speeds greatly increasing stopping distance and poses significant safety concerns. Brake hcu (hydrolic control unit) /abs system malfunction poses issues with bumps in the road, and braking while turning even at slow speeds. Brakes return to normal after being pumped and no other malfunctions with brake system (brake booster/master cylinder/brake pads, calipers, brake fluid) operating normal after ase dealership master mechanics can be identified. Occurs in city streets, driveway, parking lots.

car image   Brake Master Cylinder problem of the 2008 Ford Fusion 25
Failure Date: 10/01/2016

Brake pedal goes to the floor before brakes start to engage. Local shop isolated any issues with the wheel brake assemblies and stated that is was either the master cylinder or the abs module. Brakes will engage sooner in the pedal travel if they are pumped once. Based on research it appears that it is most likely a stuck valve in the abs hydraulic unit.