marius883
SHO Member
Good thing about warranty is you pay only deductible. Bad thing is, the warranty on an underwarranty repair only lasts as long as the warranty. If OOP, now it is 2 yrs/unlimited miles. But seriously, 2 years is a way short life expectancy for new OEM parts like these.
The "manual/pressure" bleeding is pretty standard stuff. The HCU bleeding requires a diagnostic routine to be run, and for that you need IDS or a high-level scan tool.
IDK if the "find a gravel road, brake hard enough to activate ABS, a few times" method will work in these cars also.
From a 2014 Taurus FSM, but you get the idea
Brake System Bleeding
General Equipment
Brake/Clutch System Pressure Bleeder/Filler
Fluid Container and Hose
Pressure
WARNING: Do not use any fluid other than clean brake fluid meeting manufacturer's specification. Additionally, do not use brake fluid that has been previously drained. Following these instructions will help prevent system contamination, brake component damage and the risk of serious personal injury.
WARNING: Carefully read cautionary information on product label. For emergency medical information seek medical advice. In the USA or Canada on Ford/Motorcraft products call: 1-800-959-3673. For additional information, consult the product Material Safety Data Sheet (MSDS) if available. Failure to follow these instructions may result in serious personal injury.
WARNING: Do not allow the brake master cylinder to run dry during the bleeding operation. Master cylinder may be damaged if operated without fluid, resulting in degraded braking performance. Failure to follow this instruction may result in serious personal injury.
NOTICE: Do not spill brake fluid on painted or plastic surfaces or damage to the surface may occur. If brake fluid is spilled onto a painted or plastic surface, immediately wash the surface with water.
NOTE: Pressure bleeding the brake system is preferred to manual bleeding.
NOTE: The HCU bleeding procedure must be carried out if a new HCU has been installed.
All Vehicles
- NOTE: Make sure the area around the master cylinder cap is clean and free of foriegn material.
- Fill the reservoir with clean, specified brake fluid. Refer to Specifications in this section.
- NOTE: Master cylinder pressure bleeder adapter tools are available from various manufacturers of pressure bleeding equipment. Follow the instructions of the manufacturer when installing the adapter.
Install the bleeder adapter to the brake master cylinder reservoir and attach the bleeder tank hose to the fitting on the adapter.
- NOTE: Make sure the bleeder tank contains enough specified brake fluid to complete the bleeding operation. Refer to Specifications in this section.
Open the valve on the bleeder tank.
- Apply 207-345 kPa (30-50 psi) to the brake system.
- With the vehicle in NEUTRAL, position it on a hoist. Section 100-02 .
- Bleeding steps must be followed in the order indicated in the graphic.
Vehicles with rear integral parking brake calipers
- Loosen the bleeder screw 180° and leave open until clear bubble free brake fluid flows and then tighten the bleeder screw.
All vehicles
- NOTE: Due to the complexity of the fluid path within the rear integral parking brake calipers, it is necessary to press and release the parking brake during the bleed procedure.
Apply and release the parking brake 5 times. Loosen the rear bleeder screw. Leave open until clear, bubble-free brake fluid flows, then tighten the rear bleeder screw.
- Repeat until clear, bubble-free fluid comes out.
- Tighten the bleeder screw to specification. Refer to Specifications in this section.
- Remove the fluid container and hose.
- Repeat steps 7-13 at the remaining wheel ends.
- Close the bleeder tank valve and release the pressure. Remove the tank hose from the adapter and remove the adapter.
Hydraulic Control Unit (HCU) Bleeding
- Fill the reservoir with clean, specified brake fluid. Refer to Specifications in this section.
NOTE: The HCU bleeding procedure must be carried out if a new HCU has been installed.
NOTE: Pressure bleeding the brake system is preferred to manual bleeding.
- Follow the pressure bleeding or manual bleeding procedure steps to bleed the system.
- Connect the diagnostic scan tool and follow the ABS Service Bleed instructions.
- Repeat the pressure bleeding or manual bleeding procedure steps to bleed the system.
So there is a 2 year warranty on the parts? They replaced the brake booster and the HCU unit but that was 2 years ago last month, so I guess I’m out of luck. I’m out of warranty now, so I guess I’m stuck having to pay hundreds of dollars to sort this out.
What would you think is the most likely culprit? The master cylinder or the brake booster?

