While driving on the interstate a 'low break fluid' warning annunciated, and once acknowledged the break system warning light remained illuminated. I immediately exited the interstate and stopped at a gas station to purchase break fluid to replenish the level. As of this time, there was no noticeable change in breaking or the feel of my break petal. After adding almost the entire pint of break fluid to bring the level to an acceptable level, I started my truck and the break system warning light was no longer illuminated. As I started to pull out of the parking spot, I noticed a slight change in the feel of the break petal. So I stopped once again and looked at the break system (master cylinder, booster, hoses, lines, etc) but did not identify any damage or signs of leakage. I re-entered the truck and drove around the parking lot for a minute or two and within this time the feel of the break petal returned to near normal feel. It was at this time I re-entered the interstate and within less than one mile of travel the 'low break fluid' warning annunciated once again, however upon pressing the break petal to exit, the break petal went to the floorboard with little to no breaking results. I responded by using the emergency/parking break to assist with controlling the truck until I could reach a safe location to park the truck.

- Kingwood, TX, USA

Driving to work and the low brake fluid warning light came on and the brake pedal felt soft. About 1/2 mile later, I tried the brakes again and the pedal went all the way to the floor with almost zer0 stopping power. Coasted to a stop and no brake fluid in the resevoir. No sign of leakage anywhere. Five minutes on google and I discover Ford recalled 271,000 2013 and 2014 F150's due to defective brake master cylinder. When the master cylinder fails, all the brake fluid gets sucked into the brake booster, totally disabling the braking system. I was very lucky to get the vehicle out of traffic and stopped with out incident. Based on the aforementioned, you would think Ford would certainly repair this defective master cylinder and ruined brake booster on my 2015 F150 with only 49,500 miles. Spoke to dealership and Ford customer service and the answer was no, your 2015 F150 is not covered by the recall.

- Tucson, AZ, USA

Pulled out of the driveway stepped on the brakes pedal went to the floor used emergency break open the hood to find empty reservoir fill the reservoir with fluid fluid stepped on the brakes two minutes later it was all gone with no visible leaks

- Albuquerque, NM, USA

Brake failure, brake fluid loss into master cylinder resulting in brake pedal going all the way to floor, no braking power. Truck was in motion in a mountain region which could have been very serious.

- Palestine, TX, USA

Brake fluid warning light came on lost all brakes after parking. Brake pedal went to the floor. Happened coming off highway.

- Broomfield, CO, USA

Lost brakes on the freeway this morning. I had to put it on first gear and used the emergency brakes. Thank god traffic was slow I had my daughter with me.

- Tucson, AZ, USA

Sudden loss of braking fluid and power while in motion. Fluid filled the booster with about 4 inches of braking fluid from reservoir

- Tallahassee, FL, USA

While my wife was driving the vehicle with my two children in the in it, the brake fluid light came on. Almost immediately after the brakes began to fail. The pedal began to have less resistance and would barely stop. Thankfully this occurred as she was arriving to our house. I checked it myself as soon as I could the next morning and there was absolutely no resistance on the pedal as it would just go all the way to the floor. Had this happened as we were driving a longer distance, it could have ended very badly as there were no early warning signs to my fluid level being low. I added fluid and test drove it around the block. It seemed to work normally again. However, as I got into the truck the next morning, I experienced the same issue.

- Commerce City, CO, USA

Complete front brake failure

- Grand Prairie, TX, USA

This afternoon I left work to drive half a mile to my son's daycare when the low brake fluid light came on. Once parked at daycare I checked all lines, wheels, and under the hood and had no indication of any leaks. I went inside to get my son and came back out and as I started to drive away I found my brake pedal would go to the floor with zero pressure and the brakes were totally failed. I had a friend bring me a large bottle of brake fluid and I refilled the reservoir. I did a short test drive around the daycare and that was enough to lower the fluid level. I live 3.1 miles away from the daycare so decided to carefully drive home. I had to stop 3 times to refill the reservoir when the low fluid light came on before the brakes failed completely, again. I went through 4 bottles of brake fluid in 3 miles, still with no indication of any leaks. I feel very fortunate that this didn't happen to me while driving at greater speeds and/or on a busy road. I now have to deal with missed work and trying to get my truck to a dealership and repaired, while being a single parent of a toddler.

- Lake Bluff, IL, USA

While driving and low brake light fluid light comes on no warning. Lose all braking ability. Failure of the master brake cylinder. From looking online this is a known issue with these trucks.

- Baltimore, MD, USA

Vehicle has 63,000 miles and today the warning low brake fluid light came on while driving home. At that point the brakes we functioning normally. There was a auto parts store a few miles from my location so I diverted to the store. I thought I was either topping off fluid or would find a broken line when I arrived. At the turn into the parking lot the brake pedal went all the way to the floor nearly no braking power only going 5 miles an hour or less. At the store I inspected the vehicle and found no leaks. The reservoir was very low. I replace the fluid to the correct level and continued home. Within 5 miles the light came on again. I proceeded 2 more miles home to inspect the vehicle. I found the reservoir low again, I thoroughly inspected for leaks and found nothing on the outside of the cylinder or any lines. The I began to research the problem. I will now contact the dealer to arrange for repairs. I am suspect that something internally to the cylinder is leaking. Where else would 10oz of fluid go? if anyone from Ford is reading this (national safety manager...) it's not just the goods or services you provide that matters. Integrity counts, and the long-term success of your business depends on it. I teach my children that lying, cheating and stealing are unacceptable. I expect integrity in my employees, it matters. Time to step up before something deadly happens

- Centennial, CO, USA

On morning of 5/25/19, I was traveling in Kentucky about 180 miles from home, when I received a low brake fluid message. The brake fluid tank was about 1/2 full. I was in town and went ahead and picked up a bottle of recommended fluid and added a bit more, and error light went out. Brake pressure seemed good at that time. A few miles down the road I lost all brake pressure. The pedal went to the floor, no brake at all. I was on a two lane road and let the truck coast until I could pull it off the side of highway. I checked the brake fluid level again and tank was totally empty. I called a tow truck and had it towed to closest Ford dealership. I had to catch a ride to pick up a rental to drive home. Dealership found master cylinder leaking into brake booster. They replaced both brake master cylinder and booster. They checked for recalls on this issue but this year and model truck is not included in any recalls. We picked up the repaired truck on 5/31. We were about two miles down the road after picking up, and the check engine light came on. We turned around and took truck back to dealership. They checked error code and turned off message. We were about 80 miles down road when check engine light came on again. We drove about 100 miles to home and called our local Ford dealership. They found take fluid was clogging the vac supply and the manifold intake. They had to remove the manifold intake to clean all the brake fluid out of the vaccine hoses. Final repair was on June 7. both repairs totaled $1337.15, and a car rental and an extra night's hotel stay. All the financial charges seem minor compared to the scare we had on a narrow two lane highway with no brakes. We feel blessed we were able to safely pull car off the road. This model truck should be included in Ford brake recall before someone has a major accident.

- Galloway, OH, USA

11jun2019 0600 - pulling into parking space at gas station and warning light comes on for low brake fluid. Brakes still operating normally at this point. I leave the gas station and drive approximately a mile to the closest store to purchase brake fluid, presuming only a top off is required. By the time I get to the store, braking has diminished by 90%. I have the truck towed to the closest Ford dealership, where they diagnose the problem as failure in brake master cylinder, with brake fluid leaking into brake booster, resulting in total loss of braking.

- Hollywood, MD, USA

Driving on expressway brake fluid light went on when I got off on the exit ramp I went to hit the brakes and the brake peddle went to the floor and I didn't have any brakes. I was able to eventually get the truck to stop but I had to downshift and running off the pavement. Called tow truck had trucked towed to webb Ford highland, in.

- Beecher, IL, USA

Upon braking when entering the Florida I-275 on ramp, my brake pedal went all the way to the floor accompanied by a "low brake fluid" dash warning. My braking capacity was severely affected and emergency braking would not have been an option. I was able to exit immediately and pull over to investigate. My brake reservoir was nearly empty and no sign of leaks beneath the vehicle. I drove very slowly (stupid idea) to my Ford dealership and explained my issue. Due to me extended warranty, I was able to rent a vehicle and leave mine. Tech called next day and informed me brake master cylinder was defective as well as the brake booster. He informed me it "is covered under warranty". I have news for them. The hundred dollar co pay is going to be an "issue"... my truck is the 6cyl. 3.6 liter eco boost twin turbo. Very discouraged Ford is not recalling this issue and pray someone is not seriously hurt or killed as a result of their irresponsibility.

- Tampa, FL, USA

While driving a low brake fluid warning popped up on my display. I was one block from home. I noticed nothing wrong with the vehicle. I read my drivers manual. It said to check the fluid brake levels. If the levels were not between the minimum and maximum range call your dealer for service. I made an appointment. However when I got back in my vehicle and backed out of my garage to drive to the dealer the brakes went straight to the floor and I was unable to stop without slamming on my parking brake. Scared me to death. No one was hurt luckily. I had no warning of total brake failure other than a warning light moments before indicating low brake fluid levels. The vehicle was towed to the dealership. They offered to repair the vehicle and offered no information about this frequency or spontaneous dangerous potential with the vehicle. I am furious. It could've killed me or my family or others. I will sell the vehicle as soon as it is repaired and I can do so. These vehicles are not safe to be on the road in my opinion.

- Olathe, KS, USA

Truck was 40 months old with 33,000 miles. No history of brake issues or brake warning lights. Brake fluid low warning light came on while in motion about 1 mile from starting point. Within a few minutes and 1-2 miles of continued driving the brakes completely failed. Brake pedal went to floor with no braking or brake fluid pressure. Truck towed to dealership with diagnosis of master cylinder rear seal leaking fluid into brake booster. This was a sudden and total failure of the braking system. Hundreds of thousands of 2013 F150S were recalled for similar master cylinder failures. This is a serious safety hazard to everyone on the road. My family no longer feels safe in this truck. This sort of failure is unacceptable given current technology and engineering. Poor design, poor engineering, poor quality control. This unacceptable failure endangers people and Ford should be forced to recall this faulty component.

- Plainfield, IN, USA

Driving about 30mph when low brake fluid light came on dashboard. When I pulled over brake pedal went to the floor and I lost all my brakes had to have brake master cylinder and vacuum pump replaced also brake fluid got into the fuel system and contaminated that

- Fort Myers, FL, USA

After entering the highway and maintaining a speed of approximately 65 mph, the brake pedal suddenly lost function and was able to be pushed all the way back with no effectiveness. No alarms or safety chimes alerted the failure. This was frightening due to our whole family being present and the speed of which we were traveling at the point of failure. We were able to safely coast onto the shoulder and be towed to the nearest dealership. The mechanics could not recreate the failure and replaced the master cylinder in hopes that this will correct the problem. I am still unsure if the vehicle has had the issue corrected permanently.

- Richmond, TX, USA