Active Brake Servo: Notes

In the E72, a brake servo with dimensions of 9.5 inches is used. The outwardly visible special feature is the fork-shaped end of the push rod, which holds the bolt of the brake in an elongated hole. The movement of the bolt in the elongated hole reproduces the decoupling of the brake pedal from the hydraulic brake system. This is used in by-wire mode. At the same time, however, a mechanical connection between the brake pedal and hydraulic brake system is also possible, as is necessary for conventional mode.

During service, the components listed below can be replaced individually:

• Active brake servo with push rod and fork
• Brake vacuum-pressure sensor incl. gasket
• Diaphragm travel sensor