My wife started driving the vehicle and a short time later a "brake fluid low" warning came on. She applied the brakes and the brake pedal went to the floor and braking action was severely compromised. In order to get the vehicle off the road to a safe place, she had to continue to drive the vehicle a short distance, in order to bring the vehicle to a stop once in a parking lot she had to put the truck in tow haul mode (engine braking) and use the emergency/parking brake. We had the vehicle towed to a local service shop. They diagnosed the issue as a master cylinder leak into the booster. We then had the vehicle towed to dch ford of thousand oaks and they diagnosed the issue the same and said the master cylinder and booster need to be replaced. Vehicle has less the 50k miles and is the v6 with ecoboost. 2013 and 2014 models are apparently under active recall for same issue. 2015 (our year) is under recall query/investigation # rq16001
2015 Ford F-150 brakes complaints
Page 8 of 12: complaints 191 to 220 of 317, newest first, as owners wrote them.
While driving my 2015 ford f-150 ecoboost at 45 MPH on a city street I had a low break fluid warning light come on. I stopped at a stop light and all seemed fine.I proceeded 2 blocks to find somewhere safe to check the brake fluid level. When I tried to stop at the next stop light I had no brakes at all!!! I went through the red light intersection with my foot to the floor on the brakes. With luck, I did not hit another vehicle. I coasted slow enough to use my parking brake (e-brake) to make a full stop. I open the hood and noticed that the brake fluid reservoir was almost completely empty. After carefully examining all of the brake lines ,fittings, calipers, master cylinder and the engine compartment no brake fluid was found leaking anywhere. I had the 2015 ford f-150 ecoboost towed to a dealership. Also about a week ago during a long road trip I noticed a lot of wind noise coming from the drivers door. I was on an interstate going about 75 MPH. I got off of the interstate and re-closed my door thinking I did not shut it hard enough. About 5 miles down the interstate driving about 75 MPH I went over an approach (or a bump) to a bridge and the door dropped out of it's closed position and I could stick 4 fingers out between the door and door frame. I pull over at a safe area to exam the door and frame. I noticed that the door bolts (top and bottom) that hold the door hinge to the door had come loose and backed out about 4 turns. I tightened them and finished my trip. I notified the dealership so they can see why that had happened.
Tl* the contact owns a 2015 ford f-150. While driving approximately 30 MPH, the brakes failed and the brake pedal extended to the floorboard when attempting to stop the vehicle. The message "brake fluid low" later displayed on the instrument panel. Upon inspection, it was discovered that the brake fluid reservoir was empty. After refilling the brake fluid reservoir with brake fluid, the brakes continued to malfunction. The vehicle was taken to the local dealer (pearson ford, 10650 north michigan rd, zionsville, in, 317‑873‑3333) where it was diagnosed that the master cylinder and brake booster were faulty and needed to be replaced. The vehicle was repaired and the failure was remedied. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 58,000. *tt updated 10/15/18
There is an existing adaptive cruise control safety recall open for this year, make, and model, but my truck also experiences the exact same issues described by ford on their own site every time I use the adaptive cruise control: https://media.ford.com/content/fordmedia/fna/us/en/news/2015/09/30/ford-issues-five-safety-recalls-and-one-safety-compliance-recall.html I'm sure that the existing safety recall needs to be expanded to additional vins within the f-150 range of vehicles. It is extremely dangerous in the way it currently operates.
Tl* the contact owns a 2015 ford f-150. While driving 10 MPH down a hill, the brake pedal was depressed and failed to respond. The contact applied the emergency brake to stop the vehicle. There were no warning indicators illuminated. The vehicle was towed to the dealer (phil long motor city, 1212 motor city dr., colorado springs, co 80905, (888)-701-7494) where it was diagnosed that the brake booster was faulty. The vehicle was repaired. The manufacturer was made aware of the failure, but no action was taken. The failure mileage was 44,300.
Brakes went out while driving. Brake fluid keeps disappearing. Brake fluid has leaked into the intake and caused massive amounts of smoke from the exhaust, the master cylinder failed at only 42k miles.
Tl* the contact owns a 2015 ford f-150. While driving 55 MPH, the brake pedal was depressed, but the vehicle failed to stop. The contact also stated that the brake pedal traveled to the floorboard. The contact was able to safely stop the vehicle by letting it coast to a stop. Also, the brake fluid low warning indicator illuminated. The vehicle was towed to I-77 ford (3315 charleston rd, ripley, wv) where it was diagnosed that the sealant failed in the booster cylinder and both the master cylinder and booster cylinder needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was approximately 75,000. *tt consumer stated since the brake failure on 7/10/18 and completed repairs on 7/17/18. Also, since an i77 mechanic told me that I may lose the catalytic converters because the brake fluid went thru them, I traded the truck on 7/28/18. Updated 10/15/18
On july 21, 2018 while driving home from lake ray roberts at 10:30 pm a low fluid level warning appeared on the console of my 2015 f-150 truck. The warning was shortly followed with total brake system failure. After further inspection the fluid from the brake master cylinder had drained into the brake booster. This resulted in total loss of hydraulic brakes and a requirement to use the emergency brake to stop the vehicle.
While trying to stop at a busy intersection my brakes completely failed. Seconds later I noticed a brake fluid warning light. Upon investigation, brake fluid was very low. Added more fluid to correct the issue, only to be in the same situation a few miles down the road. Ford customer service has been very unhelpful. Parts agents hung up on me, and no guidance as to where I can find replacement parts. Vehicle is currently parked and can't be driven until fixed. I bought aftermarket parts and have to miss days of work and pay for a rental. There is only 68k miles on the truck and 3 years old. Ford knows about this and has not issued any recalls. I hope this is addressed before someone is seriously injured or dies. They are not willing to talk about it on their chat line.
While towing a trailer at approximately 15 MPH on a city street and slowing (braking), the front brakes on the f-150 ceased to work and the vehicle dash displayed a warning there was low brake fluid. Fortunately there was no collision as this was not a panic stop situation, the rear brakes of the vehicle worked, and there were trailer brakes to stop the vehicle. Upon inspection, the master brake cylinder had failed and caused the brake fluid to leak into the vacuum (brake) booster. This is the same failure outlined in the federal safety agency recall 16v345000 covering 2013 to 2014 f-150s. I believe this recall needs to be expanded to 2015 vehicles as well.
Tl* the contact owns a 2015 ford f-150. While the vehicle was engaged in park, the brake pedal was depressed and traveled to the floorboard. In addition, the brake warning indicator illuminated. The contact mentioned that brake fluid was added to the vehicle; however, the brake failure persisted. The vehicle was taken to j.c. Lewis ford (9505 abercorn st, savannah, ga 31406, (912) 216-2918) where the master cylinder, booster vacuum valves, vacuum lines, and stop lamp switch were replaced. In addition, the brake system was flushed. The manufacturer was notified of the failures. The failure mileage was 54,989. *tt updated 10/15/18
I experienced total brake failure while driving. I was able to stop with the parking brake. I checked the brake fluid reservoir and found it empty. There was not a crash involved.
Driving vehicle on country roads at approximately 30mph, a low brake fluid warning was observed. Stopped vehicle and checked, fluid was near min fill line in reservoir. Turned around to return home and within less than 1 mile all brake function ceased and upon coasting to stop, brake fluid reservoir was checked again and found empty. Checked under vehicle and at each brake cylinder, found no indication of leaking. Had truck towed to dealer (timber ford, hayward wi). They confirmed the issue was an internal leak of brake fluid in the master cylinder. Replaced brake master cyclinder, brake booster and brake vacuum pump assembly for $1000.76 vehicle had 59,663 miles at the time of service. I was able to manage my way back home using downshifting and emergency braking, however, this condition would have been very dangerous if I would have made it another mile further and been on the highway at high speed and more traffic.
On the morning of july 6, 2018, while driving from swan valley, id to idaho falls, id I experienced complete brake failure. The warning light indicated low brake failure. I thought that I needed to add brake fluid and had no idea that I did not have any brakes. When I tried to slow down, the brake petal went to the floorboard. I was shocked at that time. I put the gear shift into m and downshifted from about 60 MPH to a safer speed. I had to drive 30 miles to the nearest dealership for diagnosis and repair. I had to use the emergency brake at least 5 or 6 times to slow the vehicle to a stop. Most of the 30 miles was on a two lane us highway 26. In order to deal with less stop and go situations, I drove on highway 49 to us 20 to complete by drive to broadway ford on broadway in idaho falls. I was able to carefully drive to the dealership and they said they know of similar failures and it involved the master cylinder and a booster. The representative said that their was a recall on the 2013 and 2014 models, but not on the 2015 as of yet. From a personal note if my wife had been driving the truck I am confident their would have been an accident
Got the brake fluid warning and then within 5 minutes the brakes were gone, the pedal went straight to the floor while driving. Complete loss of braking thereafter need to be towed to dealer.
While driving on a city street, brake level low light illuminated followed by total loss brakes when attempting to stop. Checked master cylinder and it was empty. Added fluid to the full line and it continued to drain away. Problem was fluid leaking into the brake booster. A similar problem was experienced in the 2013-2014 f150 which resulted in a recall by ford. Problem occurred today (the fourth of july). All repair shops were closed so no repair cist are available yet.
Driving at a highway speed of 65 MPH, the brake fluid light appeared. I began to slow down, using the brakes to pull over,, within a few minutes I lost all brake ability when the pedal went to the floor. I was able to coast to a safe location and look at the brake fluid reservoir which was empty.
On june 15, 2018 I had a tone alert and message on the dash of my 2015 f150 appear while the truck was in motion indicating a "low brake fluid" warning. I applied the brake pedal and it appeared to be normal. I traveled a short distance to a parking lot and stopped. I returned after 20 minutes and when I stepped on the brake to start the truck the brake pedal went all the way to the firewall. I raised the hood and saw about 1/8 inch of fluid in the reservoir. I called aaa having the vehicle towed to tri-lakes ford in branson missouri. The diagnosis was master cylinder and brake booster failure.
While using the adaptive cruise control on my 2015 ford f-150 (king ranch), my truck will confuse a dump truck as a stopped or slow moving vehicle in front of my truck. This will happen if a dump truck is in the lane beside me or in opposing lanes. This occurs at sow and high speeds. Multiple times this has occurred at 65mph+ in traffic. The truck will very abruptly apply the breaks and the collision warning system will alert. This has almost caused very serious wrecks due to the speeds that it often occurs. This is also not a seldom occurance, it happens every time I pass by a dump truck. It will occur on any and every street. I took the vehicle to a ford delearship and their solution had no effect on the issue.
Brake pedal went directly to the floor then the low brake fluid level came on. Thank god I had just parked when it happened. I just drove home from a 2 hour long highway trip with my kids in the car. I guess I could be considered lucky that it happened when I parked and not going 75 MPH.
Tl* the contact owns a 2015 ford f-150. While driving 70 MPH, the brake pedal was depressed, but failed to stop the vehicle. In addition, the low brake fluid warning indicator illuminated. In order to stop the vehicle, the emergency brake was applied. The contact also mentioned that he had to drive with the emergency brake applied until he reached his destination. The vehicle was not taken to a dealer or independent mechanic for diagnostic testing or repair. The manufacturer was made aware of the failure. The failure mileage was 104,167.
I lost all break function while traveling 40 MPH and had to use my e-brake to come to a stop. Ford and my local ford dealership admit that the issue was a defective brake fluid master cylinder.
Tl* the contact owns a 2015 ford f-150. While driving 35 MPH, the low brake fluid warning indicator illuminated and the brakes became inoperable. The vehicle was taken to an independent mechanic to be diagnosed. The contact was informed that the rear seal on the brake master cylinder disintegrated, which caused the brake failure. The vehicle was repaired. The dealer and manufacturer were not notified of the failure. The approximate failure mileage was 76,000.
I was driving on a city street when my brake fluid warning light came on. I stopped in a parking lot to check the brake fluid reservoir and discovered it was almost empty. When I restarted the truck the brake pedal went completely to the floor, so the truck had to be towed to the closest auto center because there was no braking ability! We were informed that the brake master cylinder had failed - the brake fluid was leaking into the brake booster sensor. A brake master cylinder should not fail on a new vehicle that has only been on the road 2.5 years and driven only 48,000 miles!
While driving my truck on the highway at 65 MPH, I entered the off ramp and applied pressure on my brake pedal. My brakes failed and the brake pedal went to the floor. I quickly applied my parking brake, locking up the rear wheels. With no load in the bed of the truck, I slid for what seemed to be hundreds of feet before coming to a stop. Fortunately, there was no one in front of me during the skid. I took it to a tire repair vendor close by, and they diagnosed it as a master cylinder failure that also ruined the brake booster. I called ford customer service, and opened a case for my vehicle. I have read that the 2013 and 2014 models of the f150 with the 3.5l engine were recalled for this problem, but that 2015 models such as mine have not been included as of this date.
Tl* the contact owns a 2015 ford f-150. While driving various speeds, the vehicle leaked brake fluid from the master cylinder in the brake booster. The low brake fluid indicator illuminated and the brake pedal traveled to the floorboard when depressed. Autonation ford of littleton in littleton, colorado was made aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was 51,000.
2015 f150, lariate, crew cab. Completely lost the brakes without any warning, pedal went straight to the floor, warning lights came on. Had to hit the ditch to avoid slamming into the back of a school bus.
While in motion at highway speeds, our f-150 lariat supercrew 4x4 experienced complete loss of braking power. After filling the reservoir with recommended dot-4 braking fluid, the vehicle was driven carefully to the local dealership, harrold ford in sacramento. Upon inspection, the technician in the service department (vincent) diagnosed a faulty master cylinder, leaking fluid into the booster behind. In addition to the master cylinder, the booster and diaphragm are also recommended to be replaced at a cost of over $1,000. The vehicle has 39,000miles and is lovingly cared for.
Driving down the highway a brake fluid low message came up on my computer screen. I immediately tested my brakes and they still worked so I planned on pulling into the next service station to check the fluid level and possibly purchase more fluid. Upon having to slow down a little further down the road I pressed on the brake and the pedal went to the floor. I immediately started to depress the emergency brake and throttle it until I was safely off the road and could put the vehicle in park. I was towed back to my service station where my mechanic looked at the problem. My mechanic told me the master cylinder had failed and leaked into the brake booster. My mechanic replaced the master cylinder. I do have an extended warranty with ford and after starting the process to get the work covered under warranty I have been receiving the run around. I will be trying a different dealership today.
After about 35,000 miles I started noticing a vibration when I applied the brakes. Took to a ford dealer who inspected the brake pads and rotors and was told everything was fine. Took to christian brothers one month later and was told the rotors were warped and needed to be resurfaced. 80% of my driving is interstate travel with very little stop and go. I also do not drive around with one foot on the brake all the time. Therefore my guess is that this was caused by a design problem of some sort. Rotor should obviously last much longer.
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