Dynamic braking

The law requires that vehicles have two means of applying the brakes. On the F01/F02, the second means (the brake pedal being the first) is the parking brake button on the center console.

If the parking brake button is pulled out while the vehicle is in motion, a defined degree of braking is applied by the DSC system. That function is intended for emergency situations in which the driver is unable to apply the brakes by pressing the brake pedal. Other occupants of the vehicle can also bring the vehicle to a standstill in that way if, for example, the driver suddenly loses consciousness.

Dynamic braking hydraulically applies brake pressure at all four brakes. The stabilization functions of Dynamic Stability Control remain fully functional and the brake lights are switched on. That represents a major advantage over a manual parking brake.

Braking takes place only while the parking brake button is pulled out. The degree of deceleration set by the DSC is increased progressively from initially 3 m/s2 to 5 m/s2.

During dynamic braking, the parking brake indicator light on the instrument cluster comes on. In addition, a Check Control message and an audible warning signal are issued to make the driver aware of the critical situation.

If the driver uses the brake pedal and the parking brake button at the same time to slow down, the DSC control unit prioritizes. The greater braking requirement is put into effect.

If dynamic braking is continued to the point of standstill, the vehicle continues to be held stationary after the parking brake button is released. The indicator lamp on the instrument cluster remains on. The driver can then release the parking brake (as described above).