Also with the auto version you don't need to use the EPB as much, unlike the manual version. I bought my car knowing some of the issues with the EPB, and learnt some new things, all documented above. Apart from the few with actuator faults, most of the issues are other components like the slider pins, seized pistons and bad installation of the pads. Add the gear position sensor not being connected after a clutch replacement, and using the wrong diagnostic device to wipe the zero point calibrations.
I would check all the things mentioned before dealing with the actuator itself.