I am not 100% familiar with all the Hybrids but the Escape does require a special pressure bleed procedure. The tool for it does pressurize the master but there is more to it than that. It works in conjunction with the IDS scan tool to open and close the internal valves as well. If you open a bleeder screw on one of these vehicles and either pedal or gravity bleed you will not have a pedal when done. The hydraulic portion of the braking in an Escape is really only needed from 8 MPH down. The rest is regenerative braking done by the traction motor.