Accurately diagnose vehicle issues with or without a diagnostic computer. Repair and diagnose automotive electrical systems. Repair and maintenance of R-134 and 1234YF A/C systems. Performing basic automotive care, including changing oil, tune-ups, brakes, etc. Using manual and computerized diagnostic methods to identify potential problems. Explaining mechanical problems and possible solutions to clients and service writers. Testing parts and systems to ensure they work correctly. Ensuring all critical parts are checked and tested. Repairing or replacing worn, old, or defective parts of a car.