Why not buy a new MB star C3 Pro with software HDD ?
MB Star / 01/08/2017

New MB star C3 Pro with software HDD MB star C3 Multiplexer Mercedes Star Diagnostic Description It can support voltage 12-24V for truck and cars.This Mb star C3 main unit is stable for your cars and trucks,dark grey color ,also stable for your use.Best choice for broken C3 main unit replacement. Top Reasons to buy New MB Star C3 Pro without Software HDD 1.Realizes all the functions of official factory BENZ Star2000:reading out and erasing trouble code; reading the real-time data of sensor and actuator; coding and programming. 2.Multi-Language Supported. 3.Supports 1989~up to now Car, Bus, Truck, Sprint, Smart 4.MB Star C3 can do Benz 12V cars also 24V trucks. 5.Fit all computers. 6.Best quality,Best choice for broken C3 main unit replacement 7.All electric system Diagnostic   MB Star C3 Multiplexer Without HDD Package lncluding: 1 x MULTIPLEXER 1 x User Guide    MB Star C3 Replacement Main Unit Handchecking