Patent ID: 8135512

Claim:
An auxiliary control method to a motor vehicle having a built-in anti-theft system, said built-in anti-theft system having at least a wireless receiver, a Main Body ECU connected to and controlled by said wireless receiver via a plurality of first signal wires, and a plurality anti-theft means controlled by said Main Body ECU, said method comprising the steps of: providing a first interaction device and a second interaction device capable of mutually detecting each other, said second interaction device capable of producing control signals in a manner identical to those from said wireless receiver to said Main Body ECU; connecting said second interaction device to said Main Body ECU in parallel with said wireless receiver by tapping a plurality of second signal wires to said first signal wires; and sending said control signals to said Main Body ECU by said second interaction device to deactivate or activate said anti-theft means when said second interaction device detects that said first interaction device is moved into or out of an effective sensing range from said motor vehicle, respectively.