| 摘要 |
PROBLEM TO BE SOLVED: To prevent transmission of an ID signal from another key even when one ignition key provided with an immobilizer function is attached to a key holder with another key provided with an immobilizer function. SOLUTION: An antenna 18 emitting an electric power signal and an inquiry signal is arranged so as to be tilted diagonally upward to the central axial line of an ignition key cylinder 11. Then, another ignition key 20 is hung from an ignition key 1 inserted into a key rotor 12 via a key holder 19 and separated from a magnetic field of the antenna coil 18. Therefore, another key 20 is prevented from responding to the electric power signal and the inquiry signal emitted from the antenna coil 18. |
