Mercedes Star Diagnosis Compact 4 Mux MB SD Connect C4 Multiplexer Battery No power error solution

Mercedes Star Diagnosis Compact 4 Mux can work with new V2017.05 Das Xentry mercedes software. MB SD Connect C4 Multiplexer with Mercedes Vediamo scn coding software support for Mercedes benz scn coding Offline programming. A customers use MB SD Multiplexer c4 When connecting the adapter appear Battery No power error. Below OBD2Tuner.com sharing Mercedes Star Diagnosis Compact 4 Mux MB SD Connect C4 Multiplexer Battery No power error solution.

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OBD2Tuner.com Mercedes Star Diagnosis Compact 4 Mux MB SD Connect C4 Multiplexer Battery No power error solution:

Step 1: Open the obd2tuner.com MB Star Diagnosis tool MB Star SD Connect C4 main unit. Slide PCB out a little bit, from the connector side, so you can see the units buttons wiring. Carefully pry the lock out & up, after that you can pull the wiring and PCB out



Step 2： Then MB SD C4 Main PCB screws, Carefully wiggle the PCB off from another, it might be pretty tight, so carefully, side from side!





Step 3：Disconnect the LAN cable, carefully, pretty easy to break the small clip



Step 4: Then you can disconnect the obd2tuner.com MB SD C4 multiplexer Connector PCB, very carefully, might be really thight! Again slowly from both sides. You now have access to the small Fuses.




You can use multi-meter to see if they work, usually the LAN connector side 5A is burnt. So desolder the broken one, install new & enjoy your powering up mux again!

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