X-431 PRO V4.0 is a medium and high-end product independently developed by Launch. It inherits many advantages of X-431 PRO series, such as wide vehicle coverage, strong diagnostic functions and accurate test data. In addition, it supports extension module: endoscope and anti-theft key matching. Intelligent diagnosis technology, which integrates the application advantages of mobile Internet, is the first in the industry. It can automatically identify vehicle information and complete rapid diagnosis. Users can also check online vehicle maintenance records. Now the equipment comes with a new upgraded wireless diagnostic adapter DBSCAR IV. As tradition, it conserving all functions and advantages of all previous X-431 scanner generations, including the reading and deleting of error codes (DTC), allows view the current sensor data, carry out the component testing and many other special features, such as coding, adaptation, etc. X-431 PRO V4 provides full access to functions for wide range of American, Asian and European brands, combined with a superior quality and design.