While driving on interstate I355 at 70 miles per hour without requiring brakes, I got a chime and then a message on the dash that my brake fluid reservoir was low, then my brake light went on. I checked the brake pedal and it went to the floor without stopping the truck. Luckily I was able to time my distance with traffic and switch lanes and exit the interstate. I managed to get the truck into a parking lot and then checked the brake fluid reservoir. The reservoir was very low, below the minimum level. I contacted a coworker who brought brake fluid to the site and we filled it and pumped the brake pedal. It seemed fine so I drove the truck again going to work. Within another mile the chime and warning came on the dash again. At that time I pulled out of traffic and parked the truck at a bank parking lot. I then called Ford roadside assistance and had the truck brought to the nearest Ford dealership for service. The dealership told me later that night that my master cylinder and my brake booster both failed and caused the issue. I checked on line and found that the NHTSA is investigating this issue on 2015 Ford F150 trucks with the V6 eco-boost engine, which is the same engine in my truck. Before the brake issue happened I drove approximately 5 miles and stopped at several red lights and intersections without any problems.

- Homer Glen, IL, USA

The contact owns a 2015 Ford F-150. While the cruise control was activated, the vehicle braked abruptly. The collision warning indicator illuminated and a chiming sound was heard. The vehicle was taken to a local dealer (watertown Ford located at 1600 9th ave SE watertown, sd 57201) where it was diagnosed, but not repaired. The manufacturer was made aware of the failure and opened case number: 12350340. The failure mileage was 19,200.

- San Diego, CA, USA

I parked my vehicle at camping world. There was no indication that there was any problem with the brakes. I came out about one half hour later and got into my vehicle. I started the engine, put my foot on the brake pedal, put the gearshift in reverse and when I release the parking brake a warning came up on the dash that said "low brake fluid". the vehicle had just started moving in reverse. I stepped down on the service brake pedal in it went all the way to the floor, there was no braking action at all. I hade to use the parking brake to stop. This failure happened with no warning and was a total service brake failure. I found no leaks at the wheels or anywhere under the vehicle. My next stop was to pickup my 26 foot travel trailer to get ready for vacation. Ford emergency service had my vehicle towed to ron dupratt Ford in dixon California for warranty repairs. I believe the problem involves the master cylinder/brake booster.

- Vacaville, CA, USA

Spongy brakes and pedal goes low. A vehicle report was completed with the truck running connecting to Ford via my cell phone. A issue was detected. Then run again. Detected again. Then run again a hour or so later and not detected. I see a recall inquiry has been open on 2015-2016 F150 with the V6 3.6L engine. Mine is a 5.0V8.

- Cincinnati, OH, USA

Sudden total brake failure. No ability to stop vehicle. Fortunately in a residential zone and was travelling at low speed.. brake was functioning normally when driven to neighborhood retail shop. When re-entered the vehicle and began to accelerate, brake warning lamp lit and I had no braking ability!

- San Antnonio, TX, USA

Brake light came on lost all use of brakes whithin 5 minutes while driving 70 mph on highway. I was driving with the flow of traffic on a flat surface.

- Littleton, CO, USA

With the vehicle stopped, the brake pedal slowly fades to the floor when applying a firm steady pressure. At this time, there is no apparent loss of holding power once the pedal has faded. With normal driving the brakes work and the vehicle does stop. When the pedal has faded to the floor it can be brought back up by pumping the pedal. Testing has not been done to determine the amount of holding power that remains or to validate what would happen in a hard-braking scenario. The problem was first noticed on 3/17/2017 and is completely repeatable every time it is checked. The dealer has agreed with these observations but has stated that Ford will not back a replacement of the master cylinder because it is working.

- Oswego, NY, USA

Brake fluid leaked from brake master cylinder into brake booster. Result was loss of brakes very rapidly. Vehicle was moving when my wife noticed the loss of brakes. Leak could have occurred either while truck was stationary or moving.

- Georgetown, TX, USA

This is the fourth time I'm reporting this. Although my vehicle should have qualified for Ford's recall 15S29, I was never notified. But I have mentioned it to my dealer 3 or 4 different times. They always tell me there's nothing they can do. So here's the issue. When driving on the highway, my truck thinks I'm going to hit something and the alert lights and sounds come on (and once since I had adaptive cruise control on, it applied the brakes at 70 mph). This is not safe. The dealerships say there is nothing they can do to fix my truck, yet the issue keeps happening.

- Olathe, KS, USA

While driving to work. Brake fluid low warning illuminated and complete loss of brakes. This came on very fast. Within 10 mins of leaving home. Further inspection, once at my office, found there was no brake fluid leaking from the lines, calipers, or exterior of master cylinder. Brake fluid must have leaked into the booster.

- Deer Park, TX, USA

On February 17, 2016 I experienced total brake loss of my 2015 F-150. The brake loss occurred at low speed, less than 10mph. I had to frantically pump the brakes to stop on a flat level surface. Where the brake loss occurred there was no snow or ice. I took the vehicle to the Ford dealer and they said they could not find any issues. No warning lights turned on. The vehicle brakes functioned normally until today when I again experienced total loss of brakes! again it was at low speed, this time on a steep grade with minor snow accumulation. The anti lock brakes did not activate and the brake pedal went to the floor. I was barely able to stop the vehicle when I reached a level surface. As of today the brake pedal continues to go to the floor. The vehicle brakes seem to function ok at high speeds, however while parked at a stop light the pedal continues to depress. I called Ford because I am very concerned about what is happening., however they do not seem to take the complaint seriously. I asked them to tow the vehicle to a dealership because it's under warranty and I also have roadside assistance and an extended warranty. I was told by Ford that they could not tow it until next Wednesday. I finally ended up driving an unsafe vehicle over 45 miles to a dealership. The vehicle will be looked at tomorrow, hopefully!!! this is a dangerous situation that has happened twice, and I feel Ford is sweeping it under the rug. Please look into this before someone needlessly dies. Thank you!

- Hancock, NY, USA

The contact owns a 2015 Ford F-150. The contact stated that while driving the vehicle at 70 mph and coming to a stop, the brake pedal would push all the way to the floorboard. Upon pumping the brake pedal, the braking action would return to normal and stopped the vehicle. The vehicle was taken to a dealer where it was diagnosed that the brake master cylinder needed to be replaced and was repaired. After about 800 miles the failure re-occurred. The manufacturer was notified of the failures. The approximate failure mileage was 13,500.

- Macomb, MI, USA

Brake pedal bled off and message centar alerted of brake malfunction. Dealer to replace master cyl. And booster. I was stopped at a light when the incident happened.

- Modesto, CA, USA

Brake failure, no brake warning lights. Peddle provided some braking initially, then peddle fades to floor and braking diminishes to not able to hold vehicle to complete stop, even at idle speed. Pumping peddle will restore same sequence. I would think this would be extremely scary to novice drivers and cause injury, death or collision with high probability. Especially with absence of warning lamps indication. First time problem noted on near zero degree F. morning shortly after leaving early am on highway. Suspect problem to be master brake cylinder. Brake fluid level has not changed, search for external leaks in braking systems revealed no visible leaks. Vehicle currently in to service this at francios Ford bellville wi.

- New Glarus, WI, USA

The contact owns a 2015 Ford F-150. While accelerating from a complete stop at 5 mph, the brakes seemed to drag on three occasions. The dealer diagnosed that the brakes had a soft pedal, but the cause of the failure was not determined. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 31,000.

- Phoenix, AZ, USA

"check brake system" lights keeps coming on for no reason when going 40mph or more.only one time I have experience some brake loss in pedal pressure it took longer to brake. Especially on freeway. Brake fluid keeps going low more then more then normal. I've check brakes each one and have found noting. Brake pads are good and clean brakes and rotor and still same problem. Brakes keeps making noise when braking. It happens all the time I get on freeway. "check brake system". it happened second day out the dealer.

- Compton, CA, USA

Brakes are rubbing and dealer has reground front disc brakes twice without fixing problem. Suspect that brake calipers are not completely disengaging after brakes are applied. Brake pedal will go all the way to the floor after applying brakes.

- Fair Grove, MO, USA

The contact owns a 2015 Ford F-150. While driving 50 mph, the brake pedal was depressed and traveled to the floor. The brake warning indicator illuminated. The contact also mentioned that an abnormal odor of brake fluid emitted from the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 43,000...updated 02/02/17 updated 7/6/18

- Phoenix, AZ, USA

After the vehicle was parked over night (less than 10 hours) I received a brake fluid low warning when starting. I filled brake fluid and when I began to drive the brake pedal went straight to the floor with very little braking ability. I checked the fluid again and it was back to empty. Added more fluid it drained also. Now I can slightly smell brake fluid in the cab. The vehicle is undrivable. Very scary!

- Phoenix, AZ, USA

On Friday 10/28 while driving down the interstate at about 55 miles/hour at approximately 6:30pm with vehicles ahead of and behind my truck, the vehicle began to give a number of check engine alerts, at which time the engine rpms dropped to very low levels and began to stall and the accelerator no longer responded. Had truck towed to the nearest dealership within the hour. I was very lucky in this situation, for had I been in a construction area or on a bridge, the situation could have been much worse. This same situation occurred on the evening of 10/2 while driving 40mph down a state road near my home and according to the dealer who attended to the issue, the brake module had failed which caused the symptoms to arise. In that instance, the accelerate failed to respond and the engine began to stall, which it did when I pulled to the side of the road. They replaced the module a few days later. In addition, the driver side door vibrates and does not latch properly. Two dealers have failed to resolve this issue to date and I believe it is a safety concern that has largely been dismissed by the service technicians and dealerships involved. Despite numerous documented attempts to resolve this issue with Ford customer service, they have ignored this concern, have failed to respond to me in a timely manner, and declined a buyback request. I am submitting lemon law documentation for the vehicle during the week of October 31. I have spent hundreds of dollars on rental vehicles during attempted repairs to the doors and the brake module since Ford claims they will not cover the cost of rental vehicles during warranty repairs. Repair documentation attached pertains to repairs for 10/2 occurrence since the dealership has not yet had an opportunity to inspect my vehicle since it was dropped off yesterday evening. I will gladly provide info once received.

- Whitingham, VT, USA