A locking mechanism secures a plug of a charging cord in a charging receptacle of a vehicle and includes an actuator, a linear-actuated cam connected thereto and driven along a linear travel path thereby (the cam defining a slot therein positioned at an angle relative to the path), and a locking arm pivotally mounted at a pivot point to a component disposed adjacent the arm. The arm includes a follower pin that engages the slot. The arm pivots about the point to move between locked and unlocked positions in response to movement of the cam along the path. A housing of the vehicle includes the receptacle, a charging interface connected with the plug to allow current to flow from a charging unit to a system of batteries of the vehicle during a charging operation, and the mechanism.