1. A vehicle information communication device comprising: control means for a vehicle, which is mounted in the vehicle and is connected to a vehicle onboard device having characteristics capable of being changed, and which stores characteristic values for determining characteristics of said vehicle onboard device and controls the characteristics of said vehicle onboard device using characteristic values; and communication control means which is provided externally of said vehicle and can be connected to said control means for a vehicle by wireless communication, and which comprises receiving means for receiving information from said control means for a vehicle and transmitting means for transmitting information to said control means for a vehicle, and which stores and accumulates characteristic values for determining the characteristics of said vehicle onboard device, including previously determined characteristic values of said control means for a vehicle, and which reads characteristic values stored in said control means for a vehicle as vehicle information, and obtains the accumulated vehicle information corresponding to the read characteristic values, and updates the characteristic values stored in said control means for a vehicle to the characteristic values included in said obtained vehicle information.