Patent ID: 6798337
Filing Date: 2004-09-28
Classification: B60R,G07C

Abstract:
An electronic key system for a vehicle comprising:a portable apparatus comprising a first wireless communication device and a first memory storing a key ID (Identification Data); and an on-vehicle apparatus installed in the vehicle, said on-vehicle apparatus comprising, a second wireless communication device communicable with the first wireless communication device when the first wireless communication device is in a predetermined area outside of the vehicle, a second memory storing an apparatus ID, a door condition detector detecting that a locking operation of the vehicle door is executed from the outside of the vehicle, and a control unit permitting locking the vehicle door when the key ID corresponds with the apparatus ID, the control unit outputting alarm when the locking operation of the vehicle door is executed from the outside of the vehicle and when the second wireless communication device is not capable of communicating with the first wireless communicating device.