Patent ID: 6961671

Claim:
A system for preventing tampering with recorded accumulated running distance data, comprising: a first memory unit being provided in a cluster and being configured to store accumulated running distance data; a tampering prevention control unit with a second memory unit and being configured to receive input vehicle serial number data and to store the vehicle serial number data in the second memory unit and the first memory unit, and being configured to receive the accumulated running distance data and to store the received accumulated running distance data in the second memory unit; and a third memory unit being provided in an engine control unit and receiving the vehicle serial number data and the accumulated running distance data from the tampering prevention control unit and storing the received vehicle serial number data and the accumulated running distance data, wherein the tampering prevention control unit is configured to output an error message if the vehicle serial number data stored in the second memory unit is not equal to the vehicle serial number data stored in the first memory unit and the third memory unit, and wherein the tampering prevention control unit is configured to determine whether the accumulated running distance data stored in the second memory unit is equal to the accumulated running distance data stored in the first memory unit, and if not, the tampering prevention control unit causes the accumulated running distance data stored in the second memory unit to be stored in the first memory unit.