Operating opening/closing function and at least one other function in motor vehicle involves using long range for identical signals, short range for at least one signal for opening/closing function

摘要

The method involves using signals sent by stationary and mobile transponders to operate the opening/closing function and at least one other function that are partially identical. The transmission power of at least one transponder is regulated so that the range for the identical signals is long while the range of at least one of the other signals for the opening/closing function is short. The method involves using a stationary transmitter and receiver device with regulated transmit power and a mobile transponder (4), whereby the stationary transmitter and receiver device is also a transponder (3) and the signals (A-D) sent by the two transponders to operate the opening/closing function and the at least one other function are partially identical. The transmission power of at least one transponder is regulated so that the range for the identical signals (A,B) is long while the range (R1) of at least one of the other signals (C,D) for the opening/closing function is short.