MB SD C4 Device not connection solution

One of our customer had the device not connection problem when using Mercedes MB SD Connect C4 diagnostic system. Here is the working solution provided by Obd2tool.com engineer.

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Solution:
You are required to update the MB SD C4 firmware follow the guide here:

1.  Install SD Connect C4 battery
2.  Update SDConnect

He did follow the solution but still had the file for software update error

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The problem is that the names are wrong in file “SDconnect Toolkit “, you need to correct them as:
Update_automatic , Update_manual ; Update_Special

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Customer feedback:
this was the right solution of the Problem.
The Names were wrong.
Thank you very much for your help.

How to Choose good SD C4 Star Diagnosis SDConnect MB Star C4

MHHAuto Mb Star Connect C4  Mercedes Benz Star Diagnosis SD Connect C4 Experience Sharing

There are so many kinds Auto key Programmer MB Star C4 SD Connect Multiplexer in the market, how to choose a good Star Diagnosis SD Connect Multiplexer? Below eobdtool.com share a Star Diagnostic SD Connect MB Star C4 Mux identify guide as following. This is sharing from MHHAuto forum, great Mercedes Star diagnostic SDconnect SD C4 tools experience sharing.

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MHHAuto Thread: SD Connect C4 — avoiding garbage

I’m in the market for an SD connect C4 on www.cnautotool.com mercedes benz Star Diagnostic Tool and have been trying to spend my time doing some homework to avoid getting a garbage unit. I certainly can understand what a lot of people have been saying about the widely varying quality that’s out there. I am a EE and PCB designer, so I’m trying to make use of that knowledge to select the best unit that I can.

To that end, I’m going to share what info I’ve collected so far, and when I finally end up buying whatever unit I do, I’m going to do a full teardown on it and post the results here.

As another matter, I’ll openly post details on who I buy the unit from and impressions after receiving it.

Near as I can tell right now, there appear to be about 4 “factories” that make different units.

One thing I’ve been asking all of the sellers for (and I would encourage others to do the same) is photos of the actual MB Star C4 SD Connect unit (including PCBs) with a unique identifier in the photo to prove that the unit they say they are going to send me is the actual one they send me. Of course, some sellers immediately bail at this, but then you know who to avoid ahead of time.

In general, a lot of the components used in a Star diagnostic tool SD C4 Multiplexer are getting quite long in the tooth. Many of the parts are approaching 20 years of age. Thus, you stand a fair risk of getting pulls (used parts) and/or remarked parts on these.

In following posts, I’ll provide photos of what I can discern as differences between the MB Star Diagnostic SD Connect C4 units along with some commentary about whatever info I can provide at this point.

to, I’ve outlined some things I feel are important to note. They have a set of 4 analog switches on the PCB. In this photo, they are ADG426 from Analog Devices. I’ve seen some clones that use DG526CY from Harris/Intersil. The DG526CY, besides being completely obsolete, has an typical RDSON of 270 ohms vs 80 for the Analog Devices part. It also has a -55dB isolation vs -75dB for the AD part. In short, the AD part is just a much better mux. So with that said, I would insist on any unit I’m interested in using those.

A second thing you’ll notice is the use of can crystals where 4 pin variants were intended. This is just sloppy and cheap. There may also be issue with loading (and ultimately clock stability) depending on whether they matched the loading caps to the substituted crystal or not.

I haven’t had a set of photos high res enough to look at the rest of the actives in detail yet, as most sellers don’t seem to post them.

There’s also an issue pointed out on the bottom of the board where one of the (what appears to be) MOSFETs in (what appears to be a) D2 PAK looks like it was hand soldered. Again, no good.

This next photo is of the relay Star Diagnosis SD Connect PCB— I think one of the MHH members posted this from an original SDC4.

Star Diagnosis MB SD C4 Customer Feedback

Nowadays, Star diagnosis bundle MB SD C4 & Dell D630 is favored by the Mercedes owners. But there are lots of people puzzled that whether it is necessary to buy Dell laptop D630 for MB SD C4. Last week, we obd2tool customer service have searched a great deal of customer feedback from different forum, and here are some of them.

Mercedes Benz MB Star C4 SD Connect cannot power on when connected with Mercedes Tourismo bus? Mb star c3 get communication error also when connected to Tourismo? Here’s the customer solution of Mercedes Tourismo bus diagnosis or programming.

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…

ATEQ VT55 OBDII TPMS Reset Activation Programmer Tool
1.Displays: Depending on the information transmitted by the sensor, it will display sensor ID, pressure, battery state, temperature and accelerometer information.
2.Indicators: LEDs: low battery, transmision, PASS and FAIL. Buzzer.
3.Connectivity: USB port with included USB cable, PC driver and software.
4.Power Supply: ATEQ VT55 Powered with Li-Ion rechargeable batteries with charger – low battery status

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