The Electric Park Brake functions as a conventional hydraulic brake for standard service brake applications, and as an electric brake for parking and emergency braking.
Electric Park Brake (EPB) is a caliper with an additional motor (motor on the caliper) that operates the parking brake. The EPB system is electronically controlled and consists of the EPB switch, the EPB caliper and the electronic control unit (ECU).
The electric parking brake or the EPB is an advanced version of a conventional parking brake or handbrake. Sometimes, people also refer to this system as ‘Electronic Parking Brake’. Technically this system is a subpart of ‘Brake by Wire’ system.

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