Automotive electronics is the general term for car body electronic control devices and vehicle electronic control devices. Car body electronic control device, including engine control system, chassis control system and body electronic control system (body electronic ECU). The most important role of automotive electronics is to improve the safety, comfort, economy and entertainment of the car. An electronic control system composed of sensors, microprocessor MPU, actuators, dozens or even hundreds of electronic components and parts. The degree of automotive electronics is regarded as an important indicator to measure the level of modern automobiles, and it is the most important technical measure used to develop new models and improve automobile performance.