2017 New X431 diagun iv, can replace X431 Diagun III or X431 IV, is a new diagnostic tool release by Launch tech. It is composed of anX431 Diagun IV computer, a protection sleeve, a DBScar diagnostic connector and many OBD1 to OBD2 connectors. It communicates with your car by DBSCAR connecting with Bluetooth, it reads car DTCs and does diagnose function by the X431 Pro Pad computer, it achieves X431 series full car model and full system diagnostic function. Meanwhile, taking advantage of mobile internet, it integrates more application and service, such as creating maintenance database and case library, providing instant maintenance information, establishing public and private maintenance social circle etc. As a result, it builds a broad vehicle diagnostic community, which helps you share vehicle maintenance knowledge online, exchange vehicle maintenance experience online and provide vehicle maintenance related service support online. This will be another revolution raised by Launch in the vehicle diagnosis industry.