Fault diagnosis and repair of electronic systems in premium cars involves identifying and resolving issues related to the car's computer systems, sensors, and electrical components. This process typically begins with a thorough diagnostic check of the car's computer systems to identify any error codes or malfunctions.

Once the issue has been identified, the repair technician will use specialized tools and equipment to troubleshoot and repair the problem. This may include replacing faulty components, reprogramming software, or making adjustments to the car's electrical systems.

In some cases, the technician may need to consult with the car's manufacturer for additional information or assistance with the repair. This is particularly important for premium cars, as these vehicles often have unique and advanced electronic systems that require specialized knowledge and skills to repair.

Overall, the goal of fault diagnosis and repair of electronic systems in premium cars is to restore the car's functionality and performance, while ensuring the safety and reliability of the vehicle. This requires a skilled and experienced technician who is familiar with the latest diagnostic and repair techniques, as well as the specific systems and components used in premium cars.