Initializing a motor vehicle anti-theft system

摘要

The anti-theft system is brought into the initialization state by e.g. non-standard actuation of a key (3) in the vehicle ignition lock (14). A bidirectional dialog then takes place with the key by way of a transmitting and receiving unit at the lock (16). If the dialog is recognized as being authorized, a starting value is transmitted, from the transmitting and receiving unit (16) to the key and from the key to a receiver (11) of the locking system (1). The starting value is used in the key to generate a changing code and in the receiver (11) to generate a code that is to be compared therewith.