EPB is a technology that realizes the parking brake by electronic control. Its working principle is the same as that of the mechanical parking brake. Both are braked by tightening the rear wheel brake shoes through the cable. The other is to use electromechanical calipers to control the parking brake by using the electric motor to clamp the brake pads to generate braking force. EPB extends from the basic parking function to the automatic parking function (AUTO HOLD). The application of the automatic parking function technology makes the driver do not need to brake for a long time when the vehicle stops, and when the automatic electronic parking brake is activated, the vehicle can avoid unnecessary coasting. Slip after the meeting.