Patent ID: 6965305

Claim:
A sensor ID registration method for a tire air pressure monitoring apparatus including: a sensor unit built in each of tires of a vehicle for measuring an air pressure in the interior of said tire to transmit data through radio communications; and a receiver mounted in a vehicle body for receiving said data transmitted from said sensor unit to identify said sensor unit on the basis of a sensor ID included in the transmitted data and to monitor said air pressure in the interior of said tire, said method comprising the steps of: transmitting a specific number allocated to a control unit, which makes communications with said receiver, from said control unit to said receiver; transmitting a specific number identical to said specific number of said control unit from a sensor ID registration communication unit to said sensor unit; transmitting said data including said sensor ID and said specific number from said sensor unit; and in said receiver, making a decision as to whether or not said specific number transmitted from said control unit agrees with said specific number included in said data transmitted from said sensor unit so that, when they agree with each other, said receiver registers said sensor ID included in the transmitted data.