OK. I just went back and re-read parts of the Manual. I found the parts about Automatic Hold. I also re-read everything about the Parking Brake. I guess when you said "Engine Brake" you were talking about the fact that the Parking Brake acts differently depending on weather the car is running or not. When the engine is off, the Parking Brake is activated using some kind of an elecro-mechanical lock to the drivetrain/engine and when the engine is running, the Parking Brake uses the regular braking system.