Disclosed is a vehicle management system using a wireless network system the system comprising, a WCDMA service unit having a specified ID and obtaining access to a network wirelessly, an ECU system associated with the WCDMA service module for controlling all kinds of interfaces in a vehicle, a service provider for providing various services when the WCDMA service module is connected to the wireless network, and a user having the services through non-wireless or wireless communication inside or outside of the vehicle.