The Autel G-BOX is applied when all keys of Mercedes-Benz DAS3 CAN EIS/EXS are lost. With this unit, the time of reading the ECU data of W204 and W207 is eight times faster, improving the ECU reading speed. Moreover, the number of insertions and removals of W216 and W164 EISs after the year 2009 is reduced to zero, greatly simplifying the operation steps. G-BOX needs to be used with the Autel IM508 or IM608 for reliable performance. The G-BOX must be used with the XP400 in conjunction with a MaxiIM Key Programming Tablet.