Patent ID: 7489232

Claim:
An antitheft device for a vehicle which is propelled by a driving force of an engine, said device comprising: an operation-equipment limiting part disposed at a vehicle for limiting the operation of operation equipment for said vehicle through external operation; a first switch adapted to be turned on from the outside to send a first prescribed ID code; an operation-equipment operation determining part that receives said first ID code to generate permission information for releasing a limited state of said operation equipment caused by said operation-equipment limiting part; a nonvolatile memory for storing said permission information; and an engine operation limiting part that permits the operation of said engine in response to said permission information, and limits the operation of said engine based on an operating state of said engine; wherein said operation-equipment operation determining part stores in advance a second ID code corresponding to said first ID code, collates said first ID code with said second ID code, and generates said permission information thereby to permit the operation of said operation equipment as well as to make said permission information stored in said nonvolatile memory, when the collation result of said first and second ID codes indicates coincidence therebetween, and said operation-equipment operation determining part permits the operation of said engine by using said permission information in said nonvolatile memory, when said engine is restarted in a predetermined time after generation of said permission information, and wherein said permission information is deleted when use of said vehicle is stopped.