Unlock SD Connect C4 by PCB Modification

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Unlock SD Connect C4 by PCB Modification

“If your Mercedes-Benz Star diagnosis SD Connect c4 is locked, do not need to buy a new set and just change this chip is ok.” said a Mercedes owner with MB SD C4 diagnostic tool.

Here is the customer solution to unlock MB Star diagnostic tool sdconnect c4 mux.

NOTE: AT RISK TO TRY!

PCB modification procedure:

1- Carefully open the sd connect multiplexer

2- Check whether some part is easy broken

MB SD Connect C4 printed circuit board in a good condition should be:

2016-sd-connect-compact-4-pcb-1

2016-sd-connect-compact-4-pcb-2 2016-sd-connect-compact-4-pcb-3 2016-sd-connect-compact-4-pcb-4 2016-sd-connect-compact-4-pcb-5

 

3- Possible occasion:

Maybe batteries leaked and damaged the PCB.
4- Blow the chip marked with a red circle by a electric hair drier

2016-sd-connect-compact-4-pcb-6

5- Disassemble the chip

6- Write the program to a new chip

7- Install the new chip to the PCB, then assemble PCBs into SD connect c4 mux

8- Start SD c4 mux

9- Connect MB SD C4 multiplexer to the laptop

10- SOLVED! And work like a charm, as a good SD Connect C4 at obd2tool.

If method above cannot help you out please contact OBD2TOOL customer service.

Hope this helps!


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How to Solve SD Connect Mercedes C4 Xentry DAS License Key is Corrupted

Mercedes C4 Star Diagnosis xentry software newly update to v2018.12 XDOS work for Mercedes Benz till 2018.9.Xentry diagnostics with multi-language and support reading out & erasing trouble code,reading the real-time data of sensor and actuator, coding and programming.Some customers got Mercedes C4 Xentry DAS License Key is Corrupted.Here is the solutions.

V2018.12 WIN 7 MB Star C4 Software MB SD Connect Compact C4 Software HDD

Customer Problem:
Try to open MB SD Connect C4 Xentry DAS Programmer, it show
winLicense
your license key is corrupted
please contact support@…

DAS-License-Key-1

Solution of Mercedes C4 Xentry DAS License Key is Corrupted

Step 1: Run StartKeyCenter to get ID for activation
Open “StartKeyCenter” on Desktop, to get the SDconnect c4Hardware ID and App ID

DAS-License-Key-2

Complete Licence information (Hardware ID, App ID, StartDay, ExpirationDay), then click “Generate” to get License String

DAS-License-Key-3

Copy License String, then go to “StartKeys”, click “Enter” to read StartKey, then “Save” data
DAS-License-Key-4

Step 2: Reactivate Xentry/DAS

Go to Local Disk C:/ ProgramData/ LicDir, the copy and paste “lic_key_2.dat”, re-name as “lic-key_2.x4711”

DAS-License-Key-5

Setup Properties of “lic-key_2.x4711”, select Read-only
Then open XENTRY Diagnostics Openshell and close it
(NOTE: this avoids the activation code to be lost and reactivate Xentry)