The engineering method is a systematic approach used to support an engineer or project team in reaching the desired solution to a problem, which has been specified by customers. Our object has to deal with problems associated with designing complex control, signal processing and communication systems, ensuring that the applications produced are adapted to the industry regulations (ISO26262). Based on the Model-Based Design, the Extended V-Cycle and the Modular Technical Model (MTM), are the tools developed to create a standard procedure to design our system. The Extended V-Cycle defines the workflow and the techniques used in each phase during the whole project, distinguishing the computing platforms involved: DWS (Development Workstation), RCP (Rapid Control Prototyping) and VMU (Vehicle Management Unit).