(Solved)MB Star C6 OEM Xentry Diagnostics cannot read data when connected to truck

Sometimes it will happen: when MB Star C6 OEM Xentry is connected to the truck with the supplied cable, there will be a situation where the data cannot be read. The following is how to solve the problem

Problem: The device can’t read (vehicle)data

And after trying the Sprinter years2011/2010/2012, the same error will appear, and the cause of the error may be the following:
Initialization of diagnosis multiplexer failed.

Possible causes:
The link between the diagnosis multiplexer and the diagnostic unit is interrupted
The voltage supply at the diagnostic socket(circuit 30 and(or)circuit)is faulty
Note: When using SD connect, check the connection status using the Toolkit

Solution:
Open VX manager to see if it is connected to the device, if it is normal, you need to reinstall the driver