In recent years the growth of systems’ complexity leads defects and systematic failures to increase quickly. Hence, the importance of testing is increased and became a crucial parameter in the manufacturing phases. The importance of testing came from that a small defect can cause later major safety related issues during systems or devices lifetime. Testing is essential for the system's dependability. These concepts are the pillars when measuring the quality of a product. In automotive systems, high reliability and safety are crucial factors, and to satisfy these requirements the systems must go under several stress and test stages. International safety standards require high level of reliability, integrity and reliability for automotive applications.