More and more new vehicles are using electronic parking brakes instead of the older cable design. These newer designs incorporate two separate electronic actuators on the wheels. This new and growing category is also entirely powertrain-neutral, meaning parking brake actuators are found on gasoline, diesel, hybrid, and electric vehicles.
Parking Brake Actuators are also an integral part of the Hill Hold Assist systems found on modern vehicles. They engage independently to prevent a vehicle from rolling down a hill and can even be applied when the vehicle is stopped at a light. Constant use and corrosion can cause these to prematurely fail.