Brake Master Cylinder problems of the 2017 Ford F-150

Doing approximately 45mph, in freezing temps and light snow, approached a yellow light. Had plenty of distance to stop and began to apply brakes. Truck began to slow, but suddenly felt like the brakes let go or maybe hit a patch of ice. Let off and depressed the pedal again. The pedal went to the floor. I began pumping them which was slowing the vehicle, but I ended up in the middle of the intersection, narrowly avoiding a side impact with a semi and looking like a moron. My entire family was in the truck and this was very close to a disaster. Afterwards the brakes were soft and continued to do the same. When the pedal was held down it would slowly go to the floor, feeling like all hydraulic pressure was bleeding off. The initial occurrence happened on a city road in motion. Of course the truck warranty ended about 500 miles prior. This vehicle has been babied, only used for weekends. Being told by dealer that a seal failed in the master cylinder and possibly a hydraulic control unit. Estimate to repair is over $2500 to repair a very new vehicle that costs over $50,000.

Tl the contact owns a 2017 Ford F-150. The contact stated that while approaching a stop light at 35 mph, she attempted to depress the brake pedal however, the brakes failed to operate as needed, without warning. The vehicle proceeded through the red light. The contact was driven to the residence and then towed to peoria Ford (9130 w bell rd, peoria, az 85382) where the brake master cylinder was replaced due to a leak. The manufacturer was notified of the failure and informed the contact that the vehicle was not included in NHTSA campaign number: 20v332000 (service brakes, hydraulic). The vehicle was repaired. The failure mileage was 24,613.

Brakes extremely pedal sponge to the floor. Extreme brake stoppage. Vehicle was in motion and was able to stop slowly on city street. I sent it back to a near home to stay. Extremely close to collision. No damages. Replaced master cylinder to repair center. Dealership was not available.

Without warning, brake pedal went all the way to the floor, pumping brakes brought pressure and was able to stop. Upon inspection at brake repair shop, master cylinder failure was identified.

Tl the contact owns 2017 Ford F-150. The contact stated while the vehicle was being operated at 30 mph, the brakes were depressed however they failed to stop the vehicle. The contact stated the brake felt soft. The failure occurred without warning. The vehicle was able to be stopped by repeatedly applying the brake and using the trailer brake. The vehicle was taken to the dealer asheville Ford Lincoln (611 brevard rd, asheville, nc) where it was diagnosed that the master cylinder had leaked internally and it needed to be replaced. The vehicle was repaired. The failure mileage was approximately 18,300. Kh.

I was shocked at the number of f150's on the web with brake pedals suddenly going to the floor during all types of stopping situations. The problem seems to span 2016-17 models regardless of engine. It started yesterday with a freeway off-ramp failure and put me in the middle of a relatively safe intersection today. . . No brakes. I've seen master cylinders replaced to dealers stating that is the normal operation. That last part is pretty lame. . . Brake pedal going to the floor? the brake initially seems to work and then the pedal sinks slowly to the floor with no braking force at that point. At a full stop in park, I can repeat the failure. Touch the brake and it appears to be ok. Quickly touch it again and it immediately sinks to the floor. Apparently knowledgeable dealer indicated that there may be an abs solenoid sticking cycling brake fluid back to the reservoir instead of being applied to brake pressure. This sounded much more logical than replacing the master cylinder unless the abs is integrated into it in some manner.

The vehicle was bought brand new in corpus christ, TX back in April 2017. August 26, 2017, I was on my way to colorado and realize my break pedal would go all the way to the floor and suddenly lose braking ability simultaneously, which would be a disaster if an emergency brake is necessary in some situation. Fortunately, it happens when I was on a parking lot trying to get back to the main road from a short break. I did not take it very serious as there is only about 4500 miles on the truck, and the brake did function okay when you need to slow down on highway (I mean slow down, not to make a stop), but not until I almost hit a pedestrian in the neighborhood in denver. After that, I had to be very very very very careful whenever I need to perform a brake since I realize it was extremely difficult for the vehicle to make a complete stop even driving in neighborhood at about 25 mph. The brake pedal would go all the way down even when your transmission is at park. So I cancelled everything I planned in colorado and stayed hotel for 2 days until corpus was cleared from hurricane hazard. I drove the vehicle back very very very very carefully and sent it to the dealer the next day when I got home, which was Thursday August 31, 2017. The tech identified the problem as master cylinder failure and got the master cylinder ordered and replace on September 8, 2017. I understand the dealer is very busy because of the hurricane, and I do appreciate the they manage to give me a loaner vehicle taurus to drive. However, the master cylinder did not fix the problem according to the tech and they have to order and replace the hydraulic control unit, which would take another 10 business days. I did some research online and saw other people having similar problems. I hope Ford, if not, NHTSA could take this issue serious before someone got injured or killed due to this problem.

The brakes went completely out. They replaced the master cylinder, upon getting it back the brakes failed to stop adequately, and it was returned at that moment. They "bled the brakes" again and returned it. There was only 1 work order for this. The truck sat for a week and not the brakes are soft and inconsistent. I returned it to Ford and they stated it was working as expected; however in a panic stop the brakes failed to do more than 50% stop effort and on another occasion I pressed the pedal to the floor, and had hardly any brake. I took it back to the Ford dealer and they said there was nothing wrong. Since they did not take it in for service there is no record of this third attempt to get the brakes fixed. I then called the Ford customer service line and their answer is just to take it somewhere else. This vehicle is dangerous and it falls outside the recall notice for a replacement master cylinder. However that is the initial failure. I suspect additional issues; but Ford is failing to address them.