How to use Sdconnect C4 do Online SCN Coding

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How to use Sdconnect C4 do Online SCN Coding

What you can find here:
1. SCN coding compatible hardware SCN connect c4
2. How to use SCN connect c4 to do SCN coding
3. SCN coding importance

1. Question: can clone MB SD Connect C4 support Mercedes online SCN coding?
The answer is yes. Newest MB SD C4 2019.03V / 2018.12 can perform online SCN coding perfectly as long as you have online software account or buy one-time SCN coding servic

How-to-use-Sdconnect-C4-do-Online-SCN-Coding-1

Image: MB SD C4

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Image: Xentry 2019.03V

Source of SCN coding account:

One-time service
1. ) After ordering this service, prepare mb sd c4, car, laptop and teamviewer.
2.) Send Teamviewer ID and Password to customer service
3. ) The engineer will access to your laptop to authorize SCN coding function.
4. ) After finish, the system will display “The Mercedes diagnostic tool SCN coding sequence has been completed successfully”.

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2. SCN coding importance
The move to SCN coding was *very* important. There are too many configuration items in every ECU now to have someone set options by hand whenever an ECU is changed, or to understand how changes on one device have to be done on other devices. These cars are really very very complex, and unlike your laptop, if something goes wrong can result in fatalities.

There are software dependancies between different ECUs, and actually loading software into ECUs is now needed regularly – and thus so is up-to-date diagnosis equipment and up-to-date firmware disks too. A simple example is the Audio system. If you update the firmware in the COMAND unit the firmware in every other MOST device needs also to be compatible (if you want it to work reliably) and thus they all need firmware updates. If you change one component then all components need to be updated to be properly compatible.

The latest equipment even now uses ethernet to load firmware into some ECUs (so it takes 20 minutes not 20 hours).

Without SCN coding it would take considerably longer to change any control unit, would result in mistaken configurations, and thus the cost of repair (or re-repair) would go up and up as systems got more complicated. SCN coding basically allows the correct configuration to be loaded into the car.

Imagine what could/would happen if you had to “hand code” the airbag controller after replacing it ? Would you trust all of your airbags to work after the local mechanic had to set all the options correctly ? I certainly would not.

Your comment that “The capital cost of the latest version, plus the monthly subscription, means it is beyond the reach of many smaller independent garages” is just wrong.

If your garage has the skills to deal with the technology (and i’d argue that if they don’t they shouldn’t be doing complex things with the newest vehicles), then it is completely affordable.

If you want to work on older cars, then most independents seem to use a clone machine and use it for limited things.

The EU competition commissioner has previously taken a good look at this market and enforced rules that mean diagnosis equipment (for newer vehicles) is available at sensible prices. This is not true in the rest of the world. Mercedes diagnosis systems in USA are more expensive, and in the far east (and I think Australia) are not available at all to independents.

Sorry to be so contradictory, and in summary, but without SCN coding there would be mis-configurations and un-reliability – possibly dangerous to life – occurring quite regularly. And if you are going to need to work on newer cars, there are very affordable Xentry diagnostics systems – you just need to talk to Mercedes.


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What Is MB Star?

It’s the common name for the set of tools used by Mercedes and Smart to perform all diagnostics and coding.

It consists of a laptop, various pieces of software, several cables and a multiplexer.

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What Can MB Star Do?

You can code keys, activate paddles, activate auto, activate cruise control, turn off all the error lights, read out
all of the error codes, set the clutch, check all systems, actuate everything on the car etc. The list is enormous.

How Much Is MB Star?

Due to the varying prices, I won’t put a figure here as it’ll be wrong next week. Read the rest of the page and
at the base of this page you’ll see a link to who I bought mine from. Click the Benz diagnostic tool and have a look at the prices.

What Do I Actually Need To Buy?

You need a laptop (ideally a Dell D630), a hard drive suitable for the latop with the MB Star
software and you’ll need the multiplexer which plugs in between the laptop and the car.

If you have a 450, 451 or Roadster and have no intention of buying a 453, you are probably best off buying 2011
or 2012 software and a C3 multiplexer. Being wired instead of wireless makes it all a lot less complicated.

If you have a 453 you will have to have a C4 multiplexer. (Double check to make sure it has the UDS protocol).
The minimum date for the software is 2015 but I would recommend getting the newest version you can.

What Software Is Used?

Xentry DAS – Diagnosis Assistance System. This is the main diagnostics software.
WIS – Workshop Information System. This shows you how things are fixed.
EPC – Electronic Parts Catalogue. Lists out all of the part numbers for each car.

They are all handy to have and generally come as 1 package from the seller.

What Is A Multiplexer?

A multiplexer (or mux) is a device that can take several input signals and forward them all down a single line.
Essentially, it takes data received through several pins and transfers it down 1 line
into the laptop for the software to view. There are a few main types of multiplexer

C3 Multiplexer

This was the original design from Mercedes. It’s a rubber capped aluminium brick with a connector at each end.
200mm x 130mm x 85mm and weighing in at 1.3 kilograms. It has 1 LED on the front panel.

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This multiplexer was created to communicate with the CAN bus cars that were being brought out.
It could also communicate with K-line diagnostic cars like the smart 450 fortwo and Roadster.

C4 Multiplexer
a.k.a. SDconnect

The update was called the C4. An aluminium extrusion with a hard plastic surround and 2 connectors at 1 end.
215mm x 155mm x 50mm and weighing in at 1 kilogram*.

It has 4 LEDs, an LCD and 4 buttons. This multiplexer is wireless between the laptop and the multiplexer.

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This replaced the C3 multiplexer due to an addition of a third diagnostic protocol.
It still covered K-line and CAN bus but now it also covered the new UDS protocol.

UDS is what is used in the smart 453 fortwo and forfour.

*Actual size and weight may vary slightly depending on the manufacturer.

Alternative C4 Multiplexer

Before Mercedes even came out with the official C4 multiplexer, a Chinese company decided to make
their own and attempt to sell it as an update. Steer well clear of this type. They are very unreliable.
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Essentially, it is a C3 multiplexer, made as small as possible using the cheapest parts available.
They were a massive bodge up and they would fail all the time. Don’t buy this type.

C5 Multiplexer
a.k.a. Xentry Connect

This is the newest multiplexer from Mercedes.

As of July 2016, clones of this unit are now available although this type is not required for the smart..
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I don’t know how this differs from the C4 device but it is required for the new Merc hybrid (W222).

Original Multiplexer Or Chinese Clone?

I hate to be the messenger of bad news but you aren’t buying an official multiplexer for less than about £7,000.
So it’s a no-brainer to get a Chinese clone multiplexer from a reputable company for less than 1/10th of the prce.

Software

The software you get will normally be preinstalled onto a laptop or hard drive for you to install into your own laptop.
Preinstalled is a lot easier than doing it yourself and will save you 2 or 3 hours of installing and messing around.
You will get cracked versions of all of the software that you require. Some companies will also add other
software on there too like the TAN code calculator.

Software Installation – The Easy Way

What is easier than getting someone else to do it?

When I bought my 1st and HDD with the Xentry/DAS software on, I noticed a file on the desktop called Team Viewer.
I quick Google search showed me that, with the right details, someone else could control your laptop.

I assumed that the reseller did this for a reason so I left my laptop on and connected online and sent the
Team Viewer details to the reseller, asking them if they could activate the software. Next day, it was done!

This was from MBStarShop (link at the bottom of the page) but it’s worth asking 1st. Just to be sure.
I suspect it’s a service that any good reseller would offer so again, it’s worth asking 1st.

Laptop

The original MB Star setup uses an unknown Toshiba touchscreen tablet or the newer Panasonic CF-D1 tablet.
The CF-D1 is very expensive so not worth considering. You could buy 30-40 compatible laptops for the same price.

Can I Use Any Laptop?

You can but you really shouldn’t. I don’t advise it for simplicity sake.

The MB Star software was tweaked to work with 1 specific touchscreen tablet. When loaded onto other laptops,
it wouldn’t function properly. Wouldn’t connect to the car, kept crashing and didn’t do what it was supposed to.
This was mainly down to the MB Star drivers controlling the hardware in the computer.

Over time, hundreds of laptops were tested for compatibility but only 2 laptops were found to work correctly.

Dell Latttude D630
IBM Thinkpad T30

The IBM T30 has a smaller screen, slower processor and was launched in 2002.
The Dell D630 has a larger screen, faster processor and was launched in 2007.

As you can imagine, the Dell D630 is the better of the 2 to go for. It’s also easier to find as they aren’t as old.

If you really want to use your own laptop, you can get the MB Star software on an external hard drive and run it
all through a virtual machine. This is a terrible way to do it, full of problems and I really suggest you don’t bother.

The Dell D630 can be bought in working condition for around £50. I paid less than £100 for
these 2 including postage. The orange top is just vinyl to cover up the scratches on the lid.

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It makes more sense to source your own laptop instead of buying it in a kit from a Chinese seller.
You’ll pay more for the laptop, you’ll pay more postage and you’ll pay more import duty.

However, if you buy the laptop from the supplier, it will all arrive ready to use.
If you fit a hard drive to a laptop you bought separately, the software needs some setting up.
This involves collecting numbers and contacting the supplier so they can give you codes to enter.

The Dell Latitude D630 came in 2 subtle variations but they both work as an MB Star laptop.
The difference can be seen in the touchpad button layout.
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Where Can I Buy These From?

There are countless shops online and 10 times more sellers on OBD2TOOL who will sell you these items.
However, it’s always nice to have a company recommended that someone has experience with.

Following is the popular selling mb star products at obd2tool:

Products List:

  • MB SD Connect Compact 4 Star Diagnosis Tool 2017.09 Plus Dell D630 Laptop With Vediamo and DTS Engineering Software Supp
  • MB SD Connect Compact 4 Star Diagnosis Tool 2017.09 Plus Dell D630 Laptop With Vediamo and DTS Engineering Software Supp

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  • MB SD Connect Compact 4 Mb star C4 Diagnosis Tool With WiFi 2017.09 Plus EVG7 Diagnostic Controller Tablet PC
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    Description: New MB SD Connect Compact 4 Star c4 Diagnosis not only support K line diagnose and CAN BUS,but also UDS diagnose protocol. Because old MB STAR C4 main board do not have UDS chip, so old MB STAR C4 can not support it;

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  • 2017.09 MB SD Connect C5 with Super Engineering Software DTS monaco And Vediamo Plus EVG7 Tablet Support Offline Program
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    Description: MB SD Connect Compact 5 MB STAR C5 Star Diagnosis support wireless diagnose, mb star c5 Diagnosis not only support K line diagnose and CAN BUS,but also UDS diagnose protocol.

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  • Mb Star C3 Plus Dell D630 Laptop-for Benz Trucks & Cars 2017.09 version
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    Description: We provide the Best Price here for Mb Star C3 Plus Dell D630 Laptop or IBM T30 Laptop, now you buy them together, you will get a big discount and save more money.

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  • V2017.09 MB SD Connect C5/C4 Star Diagnosis Plus Lenovo T410 Laptop With DTS and Vediamo Engineering Software
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    Description: New MB SD Connect Compact 4 Star Diagnosis support wireless diagnose,It is native database from super engineer of Mercedes-Benz. And it is very essential for Super engineer of Mercedes-Benz in programming database!

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  • 2017.09 Version MB SD Connect C4/C5 Star Diagnosis Plus Panasonic CF19 Laptop  With Vediamo and DTS  Engineering Softwar
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  • MB SD Connect C5 For BENZ Upgrade Diagnostic Tool With WiFi V2017.09
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  • Best Quality MB SD Connect Compact 4 Star Diagnostic Tool With WiFi 2017.09 Version With Vediamo and DTS Engineering Sof
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    Description: mb star c4 MB SD Star Diagnostic tool, mb star diagnosis SD Connect Compact 4 is a newest and powerful daimler Chrysler wireless multiplexer for Mercedes Benz,the star diagnosis sd connect 4 can connect to PC by Wireless. And it is a very professinal diag

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  • Mb Star C3 for Benz Trucks & Cars 2015.12 version-Best Quality
  • Mb Star C3 for Benz Trucks & Cars 2015.12 version-Best Quality

    Description: XP-STAR(Auto-Link Blue STAR) realizes all the functions of official factory BEN Z Star2000: reading out and erasing trouble code; reading the real-time data of sensor and actuator; coding and programming…

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  • Mb Star C3 for Benz Trucks & Cars 2015.12 version
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    Description: Mb Star C3 (Auto-Link Blue STAR) realizes all the functions of official factory BENZ Star 2000: reading out and erasing trouble code; reading the real-time data of sensor and actuator; coding and programming. It applies the latest high-tech central gatewa

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