IN-VEHICLE ELECTRONIC KEY SYSTEM

摘要

PROBLEM TO BE SOLVED: To equip an in-vehicle electric key system with a smart key system by suppressing an increase in cost and using a simple constitution, and to reduce the number of components, the cost of an electric wire and the weight of a vehicle.

SOLUTION: This electronic key system 20 can be equipped with a keyless entry system for performing the certification of a door lock by having radio communication with a vehicle C by an operation of a keyless transmitter 22, and can also be equipped with the smart key system for wirelessly performing the certification of the door lock between a smart key 23 and the vehicle C; a center panel 24 is equipped with a reception part 41 used not only for receiving an electric wave from the keyless transmitter 22 but also for receiving an electric wave from the smart key 23; an existing CPU 39 in the center panel 24 is also used as a CPU for controlling the reception part 41; and a CPU 52 of a door control ECU 26 is also used as a CPU for performing the certification of the door lock on the basis of a signal received from the keyless transmitter 22 by the reception part 41.

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