Abstract: In a lock-out prevention control, in which when a portable device is locked out in a trunk room, an alarm is conducted and a latch of a trunk latch mechanism is controlled to its unlatch state without ID verification with a portable device, in the case where an operation of door lock is conducted by the portable device after a start of the alarm (step SB8), the alarm is stopped (step SB12) and the lock-out prevention control is prohibited. The lock-out prevention control is also prohibited when a switch located in a vehicle cabin is operated (step SB9) regardless of the door lock operation by the portable device. Thereby, the vehicle security and the utility or facility can be improved.

Abstract: Even if there is the ID verification confirmation of the ID signal that is transmitted in response to the request signal of the vehicle-inside transmitting antenna at the lock of the doors, the disablement of the ID code of the transmitter located inside the vehicle that has been registered at the memory is prohibited when at least one of operations of the lock switch of the transmitter that is located outside or inside the vehicle and the vehicle-inside switches is detected. Accordingly, the passenger inside the vehicle can start the engine by using the transmitter left behind in the vehicle.

Abstract: In a lock-out prevention control, in which when a portable device is locked out in a trunk room, an alarm is conducted and a latch of a trunk latch mechanism is controlled to its unlatch state without ID verification with a portable device, in the case where an operation of door lock is conducted by the portable device after a start of the alarm (step SB8), the alarm is stopped (step SB12) and the lock-out prevention control is prohibited. The lock-out prevention control is also prohibited when a switch located in a vehicle cabin is operated (step SB9) regardless of the door lock operation by the portable device. Thereby, the vehicle security and the utility or facility can be improved.

Abstract: Even if there is the ID verification confirmation of the ID signal that is transmitted in response to the request signal of the vehicle-inside transmitting antenna at the lock of the doors, the disablement of the ID code of the transmitter located inside the vehicle that has been registered at the memory is prohibited when at least one of operations of the lock switch of the transmitter that is located outside or inside the vehicle and the vehicle-inside switches is detected. Accordingly, the passenger inside the vehicle can start the engine by using the transmitter left behind in the vehicle.

Abstract: An anti-theft system for a vehicle includes a first control unit (an ammobilizer) that makes a collation of a key code of an individual key inserted in an ignition key with a reference key code representative of an intrinsic key exclusive to an engine of the vehicle stored in an EEPROM, stores data of a result of the collation, agreement or disagreement between the two key codes, in a B/URAM, and provides a second control unit for controlling engine operation with an instruction, an approval instruction for permitting the engine to operate or a refusal instruction for prohibit the engine from operating, according to the collation result that is stored in the B/URAM.

Abstract: An anti-theft system for a vehicle includes a first control unit (an ammobilizer) that makes a collation of a key code of an individual key inserted in an ignition key with a reference key code representative of an intrinsic key exclusive to an engine of the vehicle stored in an EEPROM, stores data of a result of the collation, agreement or disagreement between the two key codes, in a B/URAM, and provides a second control unit for controlling engine operation with an instruction, an approval instruction for permitting the engine to operate or a refusal instruction for prohibit the engine from operating, according to the collation result that is stored in the B/URAM.