About How to solve these problems when you use the MB Star C3 Car/Truck Diagnostic Tool

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MB Star C3 car/truck diagnostic tool there are the solutions for the problems maybe you will meet. and we can offer best technical support for you to solve all kinds of problems you face.

After well installed Star software (2021.03) and connect MB Star C3 multiplexer (SP45-C) with E-class W212 , the XENTRY software reported an error message reading “Unknown Communication Error”.

it shows: Unknown communication error
possible causes and remedies:
Xentry diagnostics data sectors are incomplete or faulty.
you must contact the user help desk.
1. Test other Mercedes models, because Star C3 is not able to diagnose new Mercedes-Benz cars, e.g newer W212. You need go for MB SD Connect C4 or Xentry C5
2. If the Star C3 Multiplexer failed to do other models, then
1) Run a Star diagnosis self test, if passed the self test, the device is in good condition
2) If MB Star C3 failed to run a self test, the diagnostic system is broken/damaged


now this is the latest version 2021.03 for MB Star C3 for car/truck diagnostic tool, if you have any more other question pls feel free to contact us: sale@cnautotool.com