Patent ID: 6650224
Filing Date: 2003-11-18
Classification: B60R,E05B,G07C

Abstract:
An authorization checking system for a motor vehicle, comprising:at least one user-transponder; a control unit in the motor vehicle that, in accordance with an operation of the at least one user-transponder in a first inquiry-response dialog having identifiers in accordance with each other, checks and performs one of an allowance and a blocking with respect to an authorization for unlocking and locking vehicle doors and with respect to a starting and a driving of the motor vehicle; and a master-transponder, according to an operation of which the control unit, in a special-inquiry-response dialog differing from the first inquiry-response dialog, checks and performs one of an allowance and a blocking with respect to a performance of special functions, and according to the operation of which the control unit provides only access to the motor vehicle but not the authorization for the starting and the driving of the motor vehicle, wherein: the master-transponder, in order to perform further special functions, includes an input device and a display device, and the special functions include: performing at least one of a programming of a new one of the at least one user-transponder and, an erasing of an already programmed one of the at least one user-transponder, programming at least one of replaced vehicle control units and electronic vehicle components connected to a protective system, and programming use limitations of at least one of the motor vehicle and equipment components, and reading out vehicle data.