Method and device for programming a plurality of keys to an authorization device of a vehicle

摘要

A method and apparatus teach a plurality of keys to an authorization device in a vehicle. The keys that are in a reception range of a transmission unit of the authorization device receive a test signal from the authorization device. The respective key ascertains a key-specific time window from at least one signal parameter of the test signal that is dependent on the physical location of the key, during which the respective key transmits a response signal that can be received by the transmission unit and recorded by the authorization device.

主权项

1. A method for teaching a plurality of keys to an authorization device in a vehicle, comprising:
transmitting a test signal to keys in a reception range of the authorization device, the test signal being transmitted by the authorization device; measuring a location dependent signal strength of the test signal, the signal strength being measured by the keys in the reception range such that each key in the reception range has a respective signal strength measurement dependent on a physical location of the key; for each key in the reception range, ascertaining a key-specific time window based on the respective signal strength measurement such that each key in the reception range has a respective key-specific time window; for each key in the reception range, sending a response signal in the respective key-specific time window; and recording each response signal in the authorization device.