Patent ID: 6850154

Claim:
A method for protecting motor vehicles against theft, which has the following method steps: one or more security devices are locked or unlocked if a code signal received in a control unit from a code signal generator has been successfully authenticated, and the function of a code signal generator located in the interior of the motor vehicle is at least partially disabled if the motor vehicle is not operating and a door of the vehicle is opened and closed and another code signal generator in the vicinity is recognized as being authorized and/or another code signal generator in the vicinity is recognized as being authorized after the motor vehicle has been locked, wherein the disabled code signal generator located in the vehicle is enabled only if, after the release of one or more security devices using another code signal generator and/or after a door opens, another code signal generator in the vicinity is recognized as being authorized and an enable request signal of the disabled code signal generator which is triggered manually by the user is received by the control unit.