| Issue ID | 1489258 |
| Internal NHTSA # | 11119688 |
| Manufacurer | Ford Motor Company |
| Brand | FORD |
| Model | F-150 |
| Model Year | 2015 |
| File date | 21/07/18 |
| Component | SERVICE BRAKES |
| Product type code | VEHICLE |
| Description of the problem | While on vacation at lake, the truck completely lost brakes. I dropped boat in water and parked in lot. Upon returning from day of boating, i started truck and began driving down boat ramp. I hit the brakes to slow and make the u turn to back down to water and the brake pedal went fully to the floor and alarms and brake messages began flashing on dash. There was very little deceleration. Luckily i was not moving too quickly and able to keep from hitting other people and vehicles on the ramp by turning crosswise on the ramp. Certainly could have been much worse if brakes had failed while fully loaded up trailer, less maneuvering options or with more speed. Upon checking the master cylinder was completely empty. There were no signs of leakage on any of brake lines or components. Obtained fluid and filled reservoir completely and able to get back to campsite. However, two hours later the reservoir was empty again. Finally determined fluid was leaking into brake booster and that is why no fluid leaks could be detected. The residual vacuum after engine is shut off sucks out all the fluid while vehicle is parked. Apparently the engine burns brake fluid fairly cleanly as the exhaust did not smoke excessively on startup. Removed vacuum line from booster and refilled reservoir so that it could be driven to dealership with non-boost assisted brakes. Dealership verified the master cylinder was indeed leaking into booster and replaced master and booster at a cost of $650. They said that although previous years that had this exact problem were covered mine was outside of the covered vins and not covered. |
| Vehicle Mileage at Failure | 54000 |
| Number of Occurences | |
| Source of the issue | NHTSA WEB SITE |
| City and State | BILLINGS, MT |
| VIN pattern | 1FTEW1EG5FFXXXXXX |
| Was vehicle invloved in a crash? | N |
| Was vehicle involved in a fire? | N |
| Was incedent reported to police? | N |
| Was medical attention required? | N |
| Was part original equipment? | |
| No. of injured persons | |
| No. of fatalities | |
| Date of purchase | 07/08/26 |
| Was original owner? | N |
| Anti-lock brakes | N |
| Cruise control | N |
| Number of cylinders | |
| Drive train type | |
| Transmission type | |
| Vehicle speed | 15 |
| DoT tire identifier | |
| Tire size | |
| Location of tire code | |
| Type of tire failure code | |
| Was defective tire repaired? | |
| Date of manufacture | |
| Type of child seat code | |
| Type of restraint | |
| Dealer's name | |
| Dealer's telephone number | |
| Dealer's city | |
| Dealer's state code | |
| Dealer's ZIP code |