2016 F150, 3.5L, manuf Kansas City October 2016. Complete brake failure resulting in a collision of the F150 and its towed trailer. Over $4,000 damage to F150 and trailer, and $1,066 to replace Master Brake Cylinder and Brake Booster. Gaylord Ford (Bill Marsh) 1928 Otsego Ave, Gaylord, MI 49735 (989) 732-4835 SO#927036 diagnosed: Master Cylinder leaking into Brake Booster Safety Recall 20S31. Owner advised F150 VIN was manufactured Oct 2016, 3 months after 20S31 cut-off August 1, 2016. June 8, 2020 Ford Motor Company Recall 20S31 Chronology page 2: -€œFord proposed conducting a Customer Satisfaction campaign to repair master cylinders if and when they fail and to continue monitoring the population of non-recalled vehicles. Due to the severity of this case at high-speed and potential for fatal and life changing injuries, full brake failure and none of the warning scenarios described by Ford in 4 items below; reasonableness on any public safety business standard would -€˜red flag-€™ this wurst case scenario for investigation and review. Chronology page 1, ¶4 - Loss of Brake Fluid: None of the following were observed. In this case -€œBrake-€ illuminated on dash and then not illuminated to normal. Total brake failure followed 20 minutes later without any of these 4 Ford described scenarios a driver is to expect. 1) -€œthe driver will receive an audible chime, a full screen message center alert, and a red brake warning indicator in the instrument cluster; all indicating that brake system service is required.-€ 2) -€œBraking ability would still be unchanged at that time.-€ 3) -€œIf a vehicle continues to be operated and additional fluid is depleted, the driver may begin to experience a change in brake pedal travel and feel.-€ 4) -€œif a loss of brake fluid is substantial enough to reduce brake function to the front wheels, full braking function would remain in the rear wheel circuit. Indisputable evidence the failure is grossly worsened beyond 20S31 cut-off now into Oct 2020.

- Allen Park, MI, USA

Brake Master Cylinder failed. Sudden, complete loss of brake pressure with all the brake fluid leaking into brake booster. I had to replace the unit as the car was not drivable even after adding fluid. The unit has not been inspected. Brake fluid indicator came on when there was a sudden loss of fluid due to the master cylinder failure,

- Fairfax, VA, USA

The contact owns a 2016 Ford F-150. The contact stated while driving at 55 mph, a warning light illuminated from the vehicle stating no brake fluid in brake cylinder. The contact pulled over to the side of the road and added brake fluid. The contact continued to drive and after a few minutes the warning light reappeared. The contact was able to continue to drive back to their residence. The contact had the vehicle towed to a local dealer who inspected the vehicle and diagnosed the failure as the master cylinder was leaking fluid into the brake booster. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 40,000.

- North Las Vegas, NV, USA

The contact owns a 2016 Ford F-150. While driving 55 mph, the brake pedal was depressed and traveled to the floorboard without warning. The contact was able to shift the vehicle into manual, downshift, and pump the brakes in order to come to a complete stop. The vehicle was towed to the dealer where it was determined that the master cylinder failed and needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 5,000.

- Rockaway Park, NY, USA

The contact owns a 2016 Ford F-150. The contact stated that the vehicle experienced a loss of brake functionality while pulling into an intersection. The failure occurred without warning. The vehicle was taken to the dealer where the technician diagnosed that the master cylinder was defective and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 7,500.

- Los Alamitos, CA, USA

The contact owns a 2016 Ford F-150. While driving 35 mph, the brake pedal was depressed, but the vehicle failed to stop. The contact managed to avoid a collision. The vehicle was towed to a dealer where it was diagnosed that the master cylinder needed to be replaced. The vehicle was not completely repaired at the time of the complaint. The manufacturer was not notified of the failure. The failure mileage was 8,000. Updated 01/11/2017 updated 01/23/17.

- Vancouver, WA, USA

The contact owns a 2016 Ford F-150. While driving approximately 50 mph, the brakes failed when the brake pedal was depressed. The failure recurred. The vehicle was towed to a dealer where it was diagnosed that the master cylinder needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 7,000.

- Woodstock, IL, USA

The contact owns a 2016 Ford F-150. After driving approximately 50 mph, the contact proceeded to stop the vehicle and the brakes failed. The vehicle was taken to the dealer where it was diagnosed that the brakes failed and the master cylinder needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 8,000.

- Trafford, PA, USA

The contact owns a 2016 Ford F-150. While driving various speeds, the brakes failed when the brake pedal was depressed. The dealer diagnosed that the brake master cylinder failed and needed to be replaced. The vehicle was not repaired. The contact stated that the failure was intermittent. The manufacturer was notified of the failure. The approximate failure mileage was 7,200. Updated 01/10/17

- Houma, LA, USA

The contact owns a 2016 Ford F-150. While driving 35 mph, the brakes failed without warning. The contact had to use the emergency brakes to stop the vehicle. The dealer diagnosed that the master cylinder was fractured. The vehicle was not repaired. The failure mileage was 5,000.

- Mckneesport, PA, USA