Ford F-150 Hybrid brake failure problems

Filed Oct 17, 2026 · Brakes · OK

I was driving home after dark from a work trip. I was about 15 minutes from home when I slammed on my brakes to avoid hitting a deer that ran out in front of me. I was going approximately 45 miles an hour. Then all of the brake warning lights and ABS Fault lights came on. I was able to get home with no problem and though it might have just been because of the sudden brake application and it would clear at the next drive. When I went to drive my truck next, I had no brakes and the pedal went to the floor. I started looking and found a puddle of brake fluid under my truck. I used to be a mechanic, so I started to trouble shoot the problem and found that a wire mesh covered flexible section of the brake line feeding the front passenger wheel brake caliper had a blow out and is what had failed. Although my 2021 F-150 is out of warranty, a 5 year old well maintained truck shouldn't have a brake line fail and I think I was luck to get home safe. I had my truck towed to the local Ford dealership for the repair. They did a thorough examination and could find a reason for the failure and agreed that it shouldn't have failed and that they had never seen anything like it before.

Filed Aug 24, 2026 · Brakes, Transmission · IA

First started having problems with 4x4 randomly engaging and then shortly after that a complete loss of braking capability. Warnings of Park Brake Fault, Check Brake System, Reverse Brake Assist not Available, Check Brake System, Park Brake Limited Function, Pre-Collision Assist not Available. This happened at approximately 240 miles on a new vehicle. Took to Ford Dealership, after about 5 days got the vehicle back and drove it about 4 miles before all the brake system lights came on again and another complete loss of braking capability. Had truck towed to dealer the second time (drove the first time and had little to no braking ability which happened during middle of drive). Truck still at dealer with about 270 miles on it now with no solution yet. Ford Engineers have proposed replacing a pigtail for potential loose pin fitment.

Filed Jun 10, 2026 · Acceleration, Electrical · FL

Highway Incident: While traveling at highway speeds, a sudden evasive braking maneuver caused the truck to drop power. Upon attempting to re-accelerate, the throttle pedal went to the floor with zero response, and the vehicle continued to decelerate on an active highway. Multiple trailing vehicles had to make emergency maneuvers to swerve around the decelerating truck to avoid a high-speed, rear-end collision. Subsequent Incidents: The vehicle repeatedly forces an uncommanded speed limit of 11 mph while attempting to accelerate from a complete stop or merge from stop signs. This severe lack of predictable acceleration creates an immediate risk of being T-boned or rear-ended by cross-traffic, making the vehicle entirely unsafe to operate in normal traffic conditions. An authorized Ford dealership has confirmed the underlying failure of the hybrid system. They kept the vehicle for approximately one month to replace the entire hybrid drive unit. Following that repair, the vehicle was returned to the dealer a second time, where technicians confirmed a software communication failure between the electric and gas systems, attempting to resolve it by flashing/reprogramming the ECU. The vehicle’s hybrid system and software have been extensively inspected and worked on by manufacturer-certified technicians at an authorized Ford dealership. It has not been inspected by police or insurance, as no physical collision has occurred yet. No warning lamps or messages.

Filed Apr 23, 2026 · Brakes, Driver assistance · MI

I want to include an important detail about the accident involving my 2025 Ford F-150 (VIN: [XXX] ). Immediately before the collision, I experienced a sudden change in braking. The brake pedal became very hard, and the vehicle did not slow as expected even with increased pressure on the pedal. This condition lasted for a few seconds and significantly reduced my ability to stop. The auto braking feature also did not activate. There were no clear warning indicators at the time, and the event happened very quickly. Based on how the vehicle responded, it felt like a loss of brake assist. My vehicle collided with a semi truck, totalling the front end. I was very lucky to walk away alive. Thankfully airbags and my seat belt saved me. I am reporting this as part of the incident record in case it is relevant to the cause of the accident. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jul 23, 2025 · Brakes · MI

While driving roughly 30-40mph, there was complete loss of brakes. complete soft pedal to the floor with no brake function. ABS and Brake lights flash on dash board, parking brake malfunction warning. No prior warnings, issues, messages indicating need for brake service. My wife and kids were in the car and were lucky to be on a street where we were able to coast to a stop. Any busy street or highway driving could have been sever accident/potential loss of life incident. The dealer said they have never seen this issue before and said they went through a bunch of control modules and simply reset and made software updates. I never received a confirmed "root cause". Dealer made above mentioned software updates and drove the car for 50 miles, claim the issue/service is complete and we need to take the car. No root cause, no confirmed component failure, etc. We do not feel safe taking delivery of the car. We have requested a Ford field service technician/engineer inspect the vehicle with no luck. we have started buy back/replacement process with Ford, no decision made - tells us we are subject to lemon law as if this is a "creature comfort" issue and that we need to take the car back.

Filed May 14, 2025 · Brakes · TX

Brakes failed on my 2025 F150 and several ABS and brake system alarms came in. The problem went away on its own. I took the truck to my dealer and was told Ford is aware of the problem and does not have a fix. No other advice was given.

Filed Mar 17, 2025 · Brakes, Driver assistance · 22,075 miles · FL

The contact owns a 2023 Ford F-150. The contact stated while driving 35 MPH, making a right turn and coming to a stop, the check engine and Forward Collision Avoidance warning light were deactivated, and the traction control warning light and other system failure warning lights were illuminated. The contact attempted to depress the brake pedal; however, the brakes failed to respond as needed. The contact coasted down the street and drifted and parked the vehicle. The contact attempted to accelerate; however, after depressing the brake pedal, the vehicle failed to stop as needed. The contact drifted and stopped and turned off the vehicle. The vehicle was towed to the dealer who diagnosed that the electronic brake booster had failed and needed to be replaced. The dealer contacted the manufacturer and opened a case. The vehicle was repaired. The manufacturer was informed of the failure and a case was opened. The manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 22,075.

Filed Dec 17, 2024 · Acceleration, Brakes · 25,000 miles · ME

The contact rented a 2024 Ford F-150. The contact stated that while attempting to reverse, the vehicle independently accelerated. The contact stated that the brakes failed to respond as needed. The contact was able to steer the vehicle and ended up in a neighbor's driveway. The contact was then able to shift into the park gear. There were no warning lights illuminated. The contact informed the Enterprise Rental Car where the vehicle was rented of the failure. The vehicle was not taken to the dealer. The vehicle had not been diagnosed or repaired. The manufacturer was made aware of the failure and filed a complaint. The manufacturer referred the contact to the federal safety agency Hotline to report the failure. The failure mileage was 25,000.

Filed Jun 17, 2024 · Brakes, Transmission · CA

Coming off the freeway, heard a loud noise in the rear of my truck. Then it sounded like rocks were getting pulverized. Put the vehicle in park and since we (Me, wife, and two children) were on a decline the brakes did not work and our truck drifted into oncoming traffic. Luckily cars were able to avoid us in time where we pulled off onto the shoulder and engage the parking brake.

Filed Feb 18, 2024 · Brakes · TX

While driving to work a car crossed over two lanes and pulled in front of me, I had to slam on the brakes to avoid a collision. The truck applied the brakes and that was avoided but at that moment my dash lights came on, no ABS, brake light, engine lights, and traction control all lit up. I was near my exit and got off applied the brakes and the pedal went to the floor. Basically no brakes, I was pumping and could hear some type of noise like a hissing or air leak. Because i was going up an incline was able to stop otherwise i would have hit someone. When I stopped could see brake fluid leaking and the truck also made like a pumping noise i believe from the brake system and another hissing sound. Had the truck towed to Ford - They stated a leaking brake line from EBB to the right front caliper. There was no leak until I slammed on the brakes. The truck has 27, 901 miles