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17/12/2017

My findings MB Variant coding tweaks & throttle delay

[[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
4-1

2-Pedal-Curve

4-2

3-Torque-Limiter

4-3

4-Torque-Increase-Allowance

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

http://obdauto.informe.com/blog/2017/12/17/122017-xentrydas-win-7-win-10%ef%bc%9atest-ok/

09/12/2017

New Available Bluetooth Cat3 CAT Caterpillar ET Diagnostic Adapter III 2015A Heavy Duty Truck Scanner

Latest Caterpillar CAT ET 2017A Electronic Technician  P/N 317-7485 CAT3 Professional Heavy Duty Truck Diagnostic Tool New Available!!

3-1

CAT Caterpillar ET Diagnostic Adapter III is the latest generation of the Communication Adapter group, and replaces the Heavy Duty Diagnostic  Comm Adapter II. This is the only recommended communication device for et 3,and the only datalink device that will allow you to properly communicate with a CA engine on dual datalinks. This function is needed for some ET (Electronic Technician) functions.

CAT Communications Adapter III Feature:
1. WiCaterpillar Communication Adapter3
2.Allows communication between service tools and engine controls using various data links such as J1939/11, DeviceNet
(future release), CT DataLink, and J1708 (ATA) vehicle networks;
3.Flash program allows adapter firmware upgrades as additional features become available;
4.Uses J1939/11, high-speed data link (part of ADEM III controls), substantially reducing flash times;
5.Automatically selects J1939/11 when flashing the engine (reduces the flash time approximately 80%, from 14 minutes to 3 minutes).

CAT ET Diagnostic Tool CAT ET 3 III Bluetooth function:
-Display “Logged Event Codes” to show engine over speeds,High temperatures, fuel consumption, etc.
-View ECM’s current configuration and change user settings
-Perform diagnostic tests and calibrations, and calibrate
-Electro-mechanical and electro-hydraulic components
-Context sensitive help leads operator through every task ET can perform
-Data Logger and Data Log Viewer allows recording of ECM signals for delayed troubleshooting capability.

CAT ET 3 Wireless Adapter III truck diagnostic tool Function:
1.ECM Summary screen lists every control module on equipment
2.Being tested and gives information on these modules.
3.Fast hookup and real time display of systems status. Displays ,readings such as rpm, boost, pressures, temperatures, etc. for Easy troubleshooting.
4.Identifies faulty sensors, harness connectors, and system parameters which are out of specification. Allows customers
5.To help dealer identify problems without visiting machine.
6.Identifies intermittent sensors and wiring problems during Machine operation and keeps a record of each one. Showswhen problem occurred and how often it happened.
7.Added information to allow customer to assist dealer in diagnosing and repairing problems. (Troubeshooting Help is not built in with in the program, you will still need go back to books in order to follow a repair description and steps in each Fault Code display within the program).English and metric units of measure integrated help file to easy learn the “How To” around the software.

CnAutotool.com provide best quality CAT Communications Adapter III with laptop. You can get it to work when you receive the package. Our engineer will activation the software for you, it is very convenience and easy to use.

http://cnautotoolobd2.weebly.com/2133823458/2017a-version-cat-caterpillar-et-diagnostic-adapter-iii-plus-delld630-laptop

http://annali198619.hatenadiary.com/entry/2017/12/09/214938

03/12/2017

Launch Creader Professional CRP129 Premium and CRP123 Premium Comparisons

Good news that we have the LAUNCH CRP 123 Premium and CRP 129 Premium in stock now , and they are the new solution for car owners and services for express-diagnostics, with the maximum possibilities at relatively low cost.

For models LAUNCH CRP 123 / 129 Premium device capabilities allows read and erase error codes with explanations, read the current data on the four basic systems of the car – engine, transmission, ABS (ESP, DSC), Airbag (SRS), and for CRP 129 Premium are offered additional features for programming and service intervals resetting, some basic adaptations for the main important functions and ability of diagnostic of the system EPB (electronic parking brake) / SBC ( Sensotronic brake control module).

 

Solution CRP 129 Premium on CnAutotool.com is especially useful for small services, service reception points and body/repair services for express-diagnostics depending on the requirements to the level of diagnostics, and low-cost CRP 123 Premium is suitable even for private use of individuals who have some of their own cars. Little size equipment allows to take it easily with you or express mechanic and make right on the road preliminary diagnosis. Easy and intuitive menu allows using it to anyone, even a service mechanic or private person

 

More details for the comparisons , please check as bellow :

 

Model

CRP 123 Premium new!

CRP 129 Premium new!

 

Supply voltage, V

9-18 V

9-18 V

Connection type, ability to use the

adapters for old diagnostic sockets

OBD-II,

not supported

OBD-II,

not supported

Complete scanner OBD-II mode

+ , all functions

+ , all functions

Read and delete factory fault

codes (for factory protocols)

+, more than 40

world brands

+, more than 40

world brands

Display the current

data in digital form

+, up to 4 parameters

simultaneously

+, up to 4 parameters

simultaneously

Display the current data

in graphical form

+, up to 4 parameters

on one chart

+, up to 4 parameters

on one chart

Recording of the current

data and screenshots  in

the device memory and replaying

+, up to 32 records

+,  up to 32 records

Replaying of the saved data,

Freeze Frame and historical

error codes

+

+

Read of VIN

(control units that support this feature)

+

+

Reading and display of the

identification information

of the control unit

+

+

Search the fault codes by

entering them with the buttons

+

+

Built-in help, DTC hints and

location of the diagnostic socket (DLC)

+

+

GOLO functions

Help, community and

online diagnostics

-

-

Reset and setting service intervals

inspection 1, 2

and inspection mileage

-

+

Steering  angle sensor adaptation

and reset, brake pad

locking/unlocking and checking

-

+

Number of supported systems

on factory diagnostic protocols level

4 main systems

(ENG,ABS,AT, SRS)

4 (ENG,ABS,AT, SRS)

+ 1 (EPB/SBC)

Multilanguage interface

+

+

Recording in the memory and printing

of the diagnostic reports via PC

+

+

Quick free update

via Internet

+

using the

USB 2.0

+

using the

USB 2.0

Screen

color, 4”, 480*320,

LCD TFT

color, 4”, 480*320,

LCD TFT

Support of Wi-Fi,

USB

no,

USB 2.0

no,

USB 2.0

Built-in clock and

switchable buzzer

+

+

Operating system

Windows CE 5.0

embedded

Windows CE 5.0

embedded

Main technical parameters

CPU 120 Mhz single core,

RAM 1 Mb, 4 Gb SD Card

(up to 32 Gb)

CPU 120 Mhz single core,

RAM 1 Mb, 4 Gb SD Card

(up to 32 Gb)

Support of application

installations

-

-

Web browser,

e-mail client

-

-

Multimedia functions

(video, photo, etc.)

-

-

Additional prospect

download in English

Short update manual

  download in English (protected)

 

There also have a video of Launch X431 scan tool CRP123 Premofor your reference as bellow , please check

Video 

 

http://cnautotool.blogs.jcsearch.com/30174/Launch_Creader_Professional_CRP%31%32%39_Premium_and_CRP%31%32%33_Premium_Comparisons