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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Why Dell D630 is necessary for MB SD Connect C4 Diagnosis

Nowadays, MB SD Connect Compact 4 Plus Dell D630 is favored by the Mercedes owners.
But there are lots of people puzzled whether it is necessary to buy Dell D630 laptop for MB SD C4.

Recently, we obd2tool.com customer service have searched a great deal of customer feedback from different forum, and here are some of them.
—With the Dell D630’s dedicated serial port, there was no issue for me…. it was plug and play… I just loaded the HDD from the Seller into my Dell and all I needed to do was activate WIS/EPC and XENTRY/DAS with “activation keys”… I only use the Dell for MB Star C4 SD Connect purposes…

bought an older Dell D630 with a serial port and plan on buying MB SD Star C4 directly installed in a Dell D630 hard drive. No Virtual Machine issues.

Star Diagnosis
C3 Star/ C4 actually specifies the computer or tablet used in the SDS environment… The T30 is rather slow but will get the job done.

If your ever in the market for a faster SDS laptop, the Dell 630 with at least 2Ghz and the speed improvement especially when using Xentry is like night and day.

—I advise buy SD Connect 4 which is connected with LAN cable rather than COM-port as Star C3. And pick up Dell 630 laptop if you are new to Mercedes daignosis, because all latest software (current 2015.7V) are pre-installed.
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—the HDD that is pre-loaded with the software for MB SD CONNECT C4 by the Seller, is inserted into the DELL D630… The DELL D630 is the fastest laptop with the RS232 feature.
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— C4 are favorable to get with a pre-installed drive that fits inside a Dell laptop.
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