2012 Ford F-150 service brakes problems

“While traveling at high way speed my brakes failed. We almost rear ended people and almost crashed into the divider. Thankfully the parking brake still worked.. We are very grateful that no one got injured. The truck is getting repaired at ford as I write this and it was diagnosed as master cylinder & brake booster failure.”

“Breaks stopped working while I try to start my car, it went all the way to the floor. No warning , before it stopped, the warning came when it actually happen: "no break fluid". After a mechanic checked it, the brake master cylinder and break booster failed to work properly they needed to be replaced. The master cylinder is leaking brake fluid into the brake booster. If this would have happened to me driving on freeway or on road I wouldn't had any breaks to stop. My truck has been taken to Ford dealership they are fixing the problem.”

“I just had to have the vacuum booster pump for the brakes on my truck replaced again. The part number is: BL3Z-2A451D. It is the third time that I have had to replace it in the last four years: 6/26/20, 9/15/22, and 7/21/24. My mechanic, George’s Auto, in Crescent City, CA says that it is a faulty design issue, and has to replace several on other vehicles as well.”

“While driving on the NYS Thruway my brake light came on and when I tried to engage my brakes it was difficult to push the pedal and the brakes were barely responsive. Now the brake pedal is difficult to push each time I start the vehicle and it barely stops when I begin moving. The rotors and pads are fine. My mechanic diagnosed the problem and it's a failed vacuum pump.”

“Ecoboost engine shut down on highway in rush hour traffic. Had my truck in the shop after 9526.00 in repairs and new engine it happened again this week. 1 year later. My truck was under 2 warranty extensions . And was in the Ford dealership at those times. I mentioned to service manager that it seems that possible could be the problem. Now I'm stuck with this mess . And it took 18 months for them to fix/ not fix it. Ford dealership”

“TRUCK MADE RUMBLING/GRINDING NOISE FROM REAR-RIGHT BEDSIDE AREA, THEN WHILE APPROACHING A STOP SIGN, AN ATTEMPT TO SLOW+STOP THE TRUCK WAS MADE, BUT THE PEDAL WENT STRAIGHT TO THE FLOOR AND VEHICLE PROCEDED THROUGH INTERSECTION, AFTER PULLING INTO SAFE SPOT, BRAKES STARTED FUNCTIONING CORRECTLY AGAIN. A FEW HOURS LATER BRAKING COMPLETELY FAILED. TRUCK IS CURRENTLY SITTING UNTIL WE CAN HAVE A DIAGNOSIS (AND REPAIR) DONE...”