In recent years, along with the complexity of automobile systems, improvement in efficiency of development has been demanded. And it is necessary to develop a tool family which was covered the entire development. For the design phase, it became possible to effective design by using the detail physical model. Regarding validation phase, early validation was become possible by HIL System with simplified physical model. It model was developed by reducing element of model from the detail physical model. However, there is no traceability between the control module and physical model which is used in design and validation phase because actual control module has many experimental sensitivity data. For this reason, many additional calibration work effort of control module has occurred when hardware specifications are changed, and it is one of the obstacles to efficient development. As a solution of this challenge, it is desirable to implement detailed physical model which is used in hardware design into ECU but high-speed computer is needed to realize it. In this paper was describe to super reduction technology for physical base model of vehicle thermal management. Thanks to the visualization of heat flow and extract essential function of physical phenomena, it can be realized temperature estimation equal accuracy to detail physical model. As a result, it was realized more accurate heat balance calculation of the whole vehicle on the actual production engine control module. Finally, it was realized to take a traceability for each phase (Design Phase, Validation Phase, Control Development Phase) and efficient development was possible in the field of thermal.