Key system for a motor vehicle, data transfer system for a motor vehicle and method for transferring data to or from a motor vehicle

摘要

A key for a motor vehicle includes an access module for unlocking or opening a door of the motor vehicle or for starting the motor vehicle. The key has a memory module for storing user data and a data transfer module for a wireless access to the memory module. The memory module is a rewritable memory module which can be removed by a user. A data transfer system for a motor vehicle and a method for transferring data to or from a motor vehicle are also provided.