MB STAR COMPACT 4 is the latest version in the market. Benz star Compact 4 is the professional diagnostic equipment for Mercedes Benz cars manufactured, it is the replacement of HHT. IBM Compact 4 operates based on the Windows XP system. Function: 1. 1989~up to now Car, Bus, Truck, Sprint, Smart; 2. All electric system Diagnostic; (Do not include flash code); 3. Reading out and erasing trouble code; reading the real-time data of sensor and actuator; testing the components of cars; coding and programming. Character: 1. Realizes all the function of official factory BENZ compact 3. 2. C4 Multiplexer can connect to factory computer and IBM laptop. 3. Complete maintenance data. It could offer full disassembly and assembly circuit diagram, working principle and element place anytime needed. It is the best assistant for maintenance man.