Patent ID: 7742856

Claim:
A vehicle communication system in which a plurality of control units are communicably linked to a communication network, and a monitoring device is designed to be communicably linkable to the communication network and to establish communications with at least one of the plurality of control units for monitoring, the vehicle communication system comprising: a first identifier uniquely assigned to at least one function for vehicle control, the at least one function being installed in at least one of the plurality of control units; and an identifying unit configured to identify that a target function uniquely assigned with a target identifier is installed in one of the control units based on the first identifier and the target identifier, wherein the at least one function includes a plurality of functions to each of which the first identifier is assigned, the plurality of functions being installed in at least one of the plurality of control units, and the identifying unit further comprises: a table representing that each of the plurality of functions is installed in one of the control units using the first identifier of each of the plurality of functions; and an identifying module configured to search the table for the target function based on the target identifier and to identify that the target function is installed in one of the control units based on the searched result.