Tag Archive: Mb Star Connect C4

My findings MB Variant coding tweaks & throttle delay

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[[I am copying this post from the one I made on CnAutotool as well, I figure both forums should see it, especially considering MrScott belongs to this one!]] This post assumes you have some knowledge of the software used. I’m not entirely comfortable making a full walk-through for beginners, as this is potentially risky.

After spending quite some time tinkering with and learning about Mercedes Benz Diagnostic Tool, I believe I’ve almost completely solved my issues with throttle lag on my car. Since owning the car I’ve noticed that depending on how the car is driven, like through heavy traffic or on country roads, the throttle response to the gas pedal does not seem to stay consistent. For example, if I start off driving the car in stop and go traffic, the pedal seems to become “lazy”; next time I mash on the gas, there’s a very noticeable delay in throttle input and sometimes the car doesn’t shift down when it should, either in C or S mode. It was quite annoying, and on a few occasions, kind of risky. Aside from that there’d be a very noticeable difference in the way the car performed on a day to day basis, sometimes it felt sluggish, and other times it felt pretty quick. I really didn’t like how it was unpredictable.

This is discussed in a threads like this, and it appears that ECU adaptations are the cause for this. I’m sure the adaptations would be effective in some cases, but where I live and how I drive, the adaptation process seems to have a difficult time calibrating the throttle response, and the result has been pretty undesirable to me. It seems others have the same issue, and have tried solving it doing the simple TCU reset. This reset does work, very temporarily. Every time I tried it, it’d help for a few drives but then it’d revert to sluggishness. I went over 10,000km after pulling the car battery and doing the TCU reset to see if the car needed a long time to “learn”, and it did improve, but the inconsistency/unpredictability of the throttle input, and delay, still remained an issue.

I’m very glad to have spent the money getting a diagnostic multiplexer, as it’s allowed me to learn quite a lot about how these cars operate. On top of that, I’ve done a bunch of tweaking to get things to how I’d like. If you have access to one, or know someone who does, the following tweaks have solved these problems for me. This could likely be accomplished in Xentry rather than Vediamo, but I was unable to get access to the necessary settings through Xentry myself. I Please note, I have no idea the effect this will have on warranty, as my car is completely out of any warranty..

MrScott52, a very helpful member of Benzworld posted a youtube guide on how to enable a few parameters to increase responsiveness of a diesel variant in an earlier version of DAS; these tweaks seem to make a difference with my 2.5L V6 M272 w204 as well. (I’ll link the video in a following reply.)

Attached below are the necessary parameter changes for the ME 9.7 ECU in Vediamo, which solved my issues with throttle delay (many listed in MrScott52’s video), and here are the descriptions of each:

#1 (Lastschlagdaempfung) This is the most important one. This parameter seems to be the main culprit for the inconsistent feeling throttle response and sluggishness, and I believe it causes the wonky throttle bodyadaptations which I find so awful. Disabling it has removed most, if not all delay in throttle input. It is referred to as “load-reversal damping” in Vediamo (german), but it is the “Throttle Change Damping” parameter in Xentry. I changed this parameter about a month after the others, and it definitely had the most significant impact on throttle response, and now the throttle is very consistent in performance. I believe this parameter is more directly related to the actual throttle body than the gas pedal, unlike the next parameter.

#2 (Pedalkennlinie) This is the pedal curve parameter. My car had KLD4 as default. You can play with this, and possibly leave it at KLD4. However, I changed it to KLD2. From what I understand, KLD2 is meant for cars with a manual transmission, and as such, I’d expect the pedal curve to be the most “natural” feeling to the driver. In contrast, I believe KLD4 is more responsive, but “jumpier” (more erratic in terms of throttle input). Combining KLD4 with disabling the throttle change damping parameter may be undesirable in terms of comfort/consistency.

#3 (Momentenbegrenzung) This is the torque limit parameter. The main effect I’ve observed from disabling this is that the car doesn’t reduce throttle/torque as much while cornering anymore, and the car seems to accelerate slightly faster from a standstill than before. May not be necessary to fix throttle delay, but I find it favourable.

#4 (Momentenerhoehung Getriebe) This parameter is supplementary to #3 . Like MrScott describes in his video, it allows the engine ECU to monitor torque output and send it to the transmission, but keeps it within safe/comfortable limits. I find this parameter to improve gear shifts very slightly; torque input and acceleration remains very steady throughout gear shifts. I believe it very slightly improves acceleration, even compared to only having the torque limiter disabled. Do not change this to the GSG setting. Doing so resulted in some very uncomfortable shifting. I’m not sure if there’d be a long term effect on the gearbox here, so just don’t as a precaution. The Benz diagnostic tool highlighted in black is the default setting – the ECU is not allowed to increase torque to the gearbox depending on measurement.

With all these parameters changed, I have my car performing the way I’d like it to. It’s performance remains far more consistent, there’s significantly less throttle lag, and it does actually accelerate faster (I’ve measured), but only very slightly. Starting off in C mode on an incline also no longer feels like as much of a strain. Now, all of this being said, if you have the tools and such to do this yourself, or know someone who can, you do so at your own risk. I’ve driven over 10,000km already without any negative effects of this, but I just don’t want to be responsible if anything goes wrong. I can’t imagine anything would, though. If you are willing to do this yourself, please be aware that there are many ecu parameters that are difficult to understand, and modifying them at all could potentially cause irreversible damage. I do not recommend making adjustments to any other unknown parameters without thoroughly researching their function and/or purpose.

p.s the screenshots were taken in simulation mode, I didn’t think to screenshot anything while I was actually connected to my car. The highlighted values are still of course relevant.

Attached Images

1 Throttle Damping.jpg
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2-Pedal-Curve

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3-Torque-Limiter

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4-Torque-Increase-Allowance

http://www.cnautotool.com/category-172-b0-MB+Star+C4.html

MB SD Connect C4 WIFI set on WIN10 laptop Xentry 03.2017 OK

Here share with you a personal tested guide, hope it helps and try your own risk!
How to set up MB Star C4Wireless on a Dell XPS15 9550 laptop WIN10 and run Mercedes Xentry 03.2017 software?
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I’m running Win10 on a Dell XPS15 9550 laptop with Intel AC 8260 internal wireless card installed.

After days of investigation and testing, the most important thing is that: The drivers for your wireless card MUST support AdHoc functionality.

This can be verified at the DOS command prompt. The command is: Netsh wlan show drivers
This command will show “Yes” or “No” on the line for “Hosted Network Support”.
If this line says “No”, AdHoc will not work properly.
Although I’m running Win10, Intel has drivers for the 8260 wireless card for Win8 which will enable proper AdHoc functionally.

The trick is to download the driver first, prior to removing your existing wireless driver. Download the driver ONLY, not any driver file with additional driver management apps included in the downloaded file.

Now you can go into Device Manager and remove your existing wireless card AND check the box that removes all software associated with it. My Win8 driver download file was a .exe file. I double clicked on it and the Win8 driver for my Intel 8260 card was installed. Went to Device Manager, right clicked on my 8260 wireless card and selected Properties. Clicked on Advanced and was able to see several AdHoc related entries. These AdHoc entries were not visible using the Win10 drivers.

AdHoc can now be verified at the DOS command prompt. The command is:
Netsh Wlan show drivers.
This command will show “Yes” on the line for “Hosted Network Support”.
If this line says “No”, AdHoc will not work properly

With AdHoc functionality confirmed, additional DOS commands can now be used to enable Road24h wireless connectivity.
This is what worked for me. Depending on your computer skills, your results may vary.

P.S. Recommend to get  MB DAS Xentry HDD 03.2017 for WIN7 or WIN10, WIFI set on WIN10 100% OK!

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To know more information from www.cnautotool.com.

MB SD Connect Compact 4 Star Diagnostic Tool With WiFi latest version 2015.05

Good News ! The Newest software Version 2015.05 For MB Star C4.MB SD Connect Compact 4 supports reading & erasing trouble code,reading the real-time data of sensor and actuator, coding and programming. MB SD Connect Compact 4 supports wireless diagnose, support K-line,CAN BUS and UDS protocol, fit all computers,with multi-language.

1. Latest Software Version: V2015.5
2. Support Multi-languages: English, Croatian, Czech, Danish, Dutch, Finish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Polish, Portuguese, Romanian, Russian, Spanish, Swedish, Turkish & Chinese
3. Works with MB Star Compact C4, Support Latest Mercedes Benz Cars and Trucks

If you do not have the laptop .Here suggest you one model for MB STAR C4 .This tablet is EVG7 .
c4 plus EVG7
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EVG7 Diagnostic Controller Tablet PC this model with 500G Hard disk ,we will install well BMW ICOM / ICOM A2 / MB SD Connect Compact 4 / GM MDI any one of these softwares .

Also, you can get  MB SD Connect Compact 4 Star Diagnosis Tool Plus Dell D630 Laptop Latest Version 2015.05 as the picture following from our webiste
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If You need learn more about that .welcome to visit : www.cnautotool.com .

MB SD C4 Tourismo bus communication error (fixed)

I bought the MB SD C4+Dell D630 Laptop pre-installed bundle, when I test it have the problem Mb Star C4 cannot power on when connected with Mercedes Tourismo bus, I contacted there customer service at cnautotool.com, and here is the solution provided by their engineer.

I will explain my problem in detail:

” I have tried 2 different mb sd connect c4 on Tourismo buses and sd connect does not power on.In the meantime those MB SD Connect C4 works normally to any other MB Truck and car.also on Tourismo have check MB Star C3 and works normally.”

You should check:

bus with OBD
pin 4 + 5
both must be connected and ground

In SDConnect “-” is 5 pin only. There is 4 contact not used in 16pin OBD connector.

“i’m getting an communication error when connecting xentry to a Mercedes tourismo.”

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A Communication error has occurred when access FPS system

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Solution:

– turn OFF/ON BUS ground switch (our remove battery – cable). FPS1 wake up and MB Star diagnostic recognized FPS1/VIN code.

or

– enter the DAS ATEGO truck come and place manually and then it will work perfect

” Another problem is : “Currently the speed limit is set to 100 km/h. I’m trying to set it to higher value (with Mercedes Star Diagnosis MB SD C4 DAS using modified EOL files). On the menu it tells me that I can, because there are higher values (105 km/h. 112 km/h, etc). But when I try to set the speed limit to higher than 100 km/h it doesn’t allow me to do it (can’t save the changes). When I try to set it below 100 km/h everything goes fine.”

I done the Access special settings , and it working perfect now!

MB SD Connect C4 firmware v2.30 Update Guide

1. Prepare 6 AA5 batteries according to Instruction for how to install MB SD C4 Batteries.
Note: Please do use brand new batteries with sufficient electricity; otherwise, you will fail to update the firmware.

Then, select the green cable to connect to your laptop and MB SD Connect Compact 4 diagnostic multiplexer, and use OBD cable to connect to Mb Star Connect C4 multiplexer and your vehicle. (If the vehicle cannot be connected, select OBD 12V power instead.)

2. Open the software “2012.09 DAS”.
Go to C:\ program files \ SDconnect Toolkit to check whether there are the three following files as the pic below shows.
Update_automatic;
Update_manual;
Update_Special.
If the files’ names are different from the pic shows, please correct the names the same as the pic shows.
Mb Star C4 with EVG7 Tablet

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3. Restart your computer.

4. Start to update the firmware according to how to update MB SD connect4 MUX.

2016 MB Star SD Connect C4 Hardware and XENRTY DAS FAQ

Here are the most frequently-asked questions from MB Star diagnosis SD connect C4 diagnostic scanner users and professional answers from engineers working for CnAutotool Hopefully, it helps those in trouble.

Q: How to change the Xentry language?
A: Go to Setup, select Setting language, then choose a language and click on Accept.

Q: How to setup the DAS language?
A: Go to DAS Properties. In the Target, change the last two letters (which is the first two letters of the language). Then click on OK.

Q: Xenry language error: A fault has occurred.
A: Change the PC date and time to be the same as the Xentry version.E.g. Your Xentry is version 2015.09, you need set up 2015.09.05 on your PC.

Q: Fault (30.3) pops up after DAS activation. No valid DAS license; DAS will now be closed.
A: Go to local disk C:/programme files/Mercedes-Benz/StartKeyCenter2; find our StartKeyCenter.exe.
If DAS doesn’t expire, just change the bin file in C:/programme files/Mercedes-Benz/DAS
If DAS expires, you need Lan-id to activate DAS

Q: Xentry cannot run, the icon displays then disappears.
A: Change the PC date and time to be the same as the Xentry version;
If it does not work, replace the bin file in C:/programme files/Mercedes-Benz/DAS (the bin file differs from Xentry versions)
If all above fails, send the Mercedes software hard disk to the vendor to re-copy files.

Q: Mb Star C4 firmware files are lost and WIFI cannot be set up.A: It means your sd connect firmware files are deleted and you need update sd c4 firmware.
Files need to update (ORDER!!!!!!):
02_CSD_2_10.zip
01_Boolimage_2_3.zip
03_PmPic29_Cpld23.zip
Sd connect c4 firmware update manual:
Step 1: Install battery
Step 2: Change file name
Step 3: Update SD Connect C4 firmware

Note: please prepare new batteries and an OBD cable for use; if it fails to connect to the vehicle, replace it with the OBD 12V power; otherwise, it would pop up error 662 (update fails.)


Q:  MB STAR SDconnect Tool kit appears Error 749 in Administration.Due to network problems, no connection to the SDconnect can be establish (749)No SDconnect is selected or the desired SDconnect cannot be selected
A: It results from incorrect IP setup. Please go to the network connect to WLAN set up IP: 172.29.127.119

Q: Xentry error 2221-45: No access authorization code![2221-45] No access authorization for XENTRY diagnostics was found on the server. You must contact the user help desk.
A: Go to C:/programme files/Mercedes-Benz/Xentry/fusoko/eclipse/plugins; delete the file “com.damler.xentry.diagservice_1.6.0.201607181047”

Q: Xentry cannot open for use even reopen Xentry or restart the PC after activation.No access authorization code! You must contact the user help desk.
A: Go to C:/programme data/LicDir; delete lic-key2.dat
Open StartKeyCenter on Desktip; activate Xentry
Get a new lic-key2.dat after Xentry activation; copy and paste lic-key2.dat; then rename it as “lic-key2.x4711” (setup the file properties to Read Only)

Q: EWA-NET file cannot start. HTTP Status 500-Servlet execution threw an exception.
A: Go to the Start menu, then EWA-NET Admin ToolIn EWA Admin Tool, Server, EPC, WIS all should start (if they have started yet, pls. stop and restart)Server, EPC, WIS restart, reboot the PC, then open EWA-NET to login


Q: Xenry Error (1.2)-2.503.13003:Initialization of diagnosis multiplexer failed
Possible causes:
The link between the diagnosis multiplexer an the diagnostic socket is interrupted
The link between the diagnosis multiplexer an the diagnostic unit is interrupted.
The voltage supply at the diagnostic socket (circuit30 and (or) circuit31)is fault.

Note:When using SD connect c4 multiplexer, check the connection status using the Toolkit.
A: check the connection of the cable and the car;
Then check the wired&wireless IP setup
Then check the Mercedes software; it’s MB SD C4 software, not Star C3
If all ok, it may result from the SD connect c4 mux or the cable

BIG THANKS to engineers at cnautotool.com.

Why MB Star C3 Xentry cannot work on W205 recent Mercedes?

User puzzles:
I have installed Xentry 9.2014 in Mb Star C3 multiplexer. It works well so far. Now, I need to make diagnosis on mercedes w205 year 12/2014 but It can not communicate with the car. C3 don’t work in all recent cars in xentry but in DAS is ok.

Experienced users’ suggestion:
C3 has many limitation regarding latest vehicles in Xentry.
It can’t diagnose it e.g w205, w212, w222, w906, smart 453 etc.

its glory is already passed unless you deal only with vehicles in DAS.
you have to change to Mb Star Connect C4.
C4’s support also officially has been stop since 12-2015.

It is no different even you change folder.
it is different protocol with recent vehicles.

For your w205 (nice car) you can use one of this :
1.sd connect c4
2.xentry sd connect BENZ C5

Both good at all new Mercedes Benz models,W222, W221, W212, W203, 211,W 204,W207, W212, GL166, B 246, CLS 218, SLK172 and Smart405, 451, 452, 454

Besides the Star Diagnosis software c3 and c4 own, sdconnect c4/c5 added three more software: SD Media, Xentry and Smart TAN Code.
SD Media: Video and PDF lessons;
Xentry: New software released by Benz Company after 04/2009 by diagnosis new cars. Xentry software for diagnosing W 204,W207 and W212 which C3 and C4 does not support;
Smart TAN Code: Opened special function in DAS program with Smart cars 405/ 451/452/ 454.Besides, it also opened more special functions, such as engineer mode, remove limitations,etc, which Star C3 and Star C4 do not have.

I have successfully communicated wit my w205 AMG using a MB SD C4 connect all controllers accessed.