Patent ID: 7416071

Claim:
A braking method for a vehicle, for use as a safety measure and replacement function in the event that a working brake system of the vehicle fails, in which the vehicle is braked by a transmission via engagement of frictional shift elements until the vehicle is substantially at rest, and a combination of frictional shift elements engaged when the working brake system of the vehicle fails does not correspond to a shift logic of a gear during normal driving operation of the vehicle, the method comprising the steps of; engaging at least one additional frictional shift element of the transmission, starting from a gear engaged at a time when the vehicle's working brake system fails in such manner that drive wheels of the vehicle undergo one of a maximum or a specified braking, but such that the vehicle's drive wheels are not locked while an actual speed of the vehicle is greater than a defined value, setting one of a shifting pressure or a torque of an additionally engaged first frictional shift element compared with the normal shift logic, with the set shifting pressure or torque being determined as a function of one or more of a brake pedal actuation force, a distance to another vehicle and an actual speed of the vehicle.