garygid wrote:Ok, a guess.
The 2010 Prius pressurizes the hydraulics and "locks" the pressure, I believe.
You own one and you don't know that the parking brake is a pedal on the left side of the car next to the driver side door. Press the pedal down to set the brake and press it again to release the brake. The pedal actuates a brake pad on the rear wheels via a cable. The "P" button is not a parking brake, it is putting the transmission in park which allows the pawl to hold the car. This will not completely stop the car from moving. If the engine starts and stops when in park the car will lurch to some extent. Set the parking brake to avoid this. I don't know of any car that uses hydraulic micro locks for the legal parking brake. Drag racers, 4x4's and other vehicles use these to allow for more control of the car, but all parking brakes (that I'm aware of) use a mechanical braking action.
I'm interested in how Nissan is handling the parking brake on the Leaf since it is a button.