Nothing to big OR to small Automotive service technicians typically do the following: - Test parts and systems to ensure they are working properly - Identify mechanical problems, often by using computerized diagnostic equipment - Follow checklists to ensure that all critical parts are examined - Test and lubricate the vehicle’s engine and other major components - Perform basic care and maintenance, including oil changes, tune-ups, and tire rotations - Repair or replace worn parts, such as brake pads and wheel bearings - Disassemble and reassemble parts - Use testing equipment to ensure that repairs and maintenance are effective - Explain to clients their automotive problems and the repairs done on their vehicles