| 摘要 |
<p>When a request to unlock a door Ä3R (3L)Ü of one side portion of a vehicle (1) is input, an ID request signal is transmitted from a first transmitting antenna Ä5R (5L)Ü provided in the one side portion, and an alarm signal is transmitted from a second transmitting antenna Ä5L(5R)Ü provided in the other side portion of the vehicle (1). A portable unit (1A) sends back a portable-unit signal in dependence on the ID request signal and alarm signal. When the portable unit (1A) receives the first signal and does not receive the second signal, a door-unlocking control part (4b) unlocks the door Ä3R (3L)Ü of the one side portion in dependence on the portable-unit signal received by a receiving antenna (6). <IMAGE></p> |
