Unintentional operation of the parking brake button before the bowden cables have engaged in the wheel carrier can lead to assembly problems. In order to suppress the activation of the actuating unit by button operation during assembly, an assembly mode has been installed.
This mode is activated on delivery of parts. Before initial operation of the parking brake in the vehicle, the assembly mode must be deactivated by means of a short test run. Activation via button operation is then re-enabled.