Immobilizer systems are crucial components in modern vehicle security, designed to prevent unauthorized starting of a vehicle. These systems are closely integrated with the vehicle's Engine Control Unit (ECU), and their main function is to disable the engine unless the correct key or transponder is present. The immobilizer ensures that only the authorized key with the correct signal can allow the engine to start, protecting the vehicle from theft. When programming or cloning an ECU, understanding the role of the immobilizer system becomes essential as it is intricately tied to the vehicle’s security features. During ECU programming, the process involves configuring or updating the software within the ECU to ensure proper functioning of various vehicle components, such as the engine, transmission, and more. However, the immobilizer system must be reprogrammed or adjusted in parallel to ensure that it can recognize new keys or transponder signals. If the ECU is cloned, which is c...