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Read and Write BMW Bosch DME MEVD172G with KTAG KTM100

Le 11 janvier 2018, 13:53 dans Humeurs 0


DIY – DME/ECU Read Write and Tuning  2016MY F82 M using KTAG KTM100 master clone ecu tuning tool.

Disclaimer: Credit to su_root on bimmer forum provided the document for educational purposes. We are not responsible for any direct or indirect damage that may occur to your property as a result of the information provided here.

Parts arrived this morning. Below are pictures of what was included in the box.
–KTAG KTM100 Clone (US$349)
-12v/1A AC Adapter
-USB2.0 A-to-B Cable
-Cables to wire up to the DME

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Software setup:
The instructions provided recommend the use of WinXP/Win7, disabling all network connections and malware detection programs. I was in a rush to stage the software and connect the flashing tool to ensure all was OK so I tested the following setup on a Win10Pro x64 machine. I also made the changes below before starting:
-Disable Driver Signature Enforcement – REQUIRED or Dimsport driver will not install and device will show as ‘Unknown’ under Device Manager
-Disable AV/Malware Software – I use Webroot/Defender and shut them off
-Disable LAN/WLAN adapters

After making the changes above to my PC I powered up the adapter and plugged in the USB cable. Windows warned me of the unsigned driver and continued the install.

Bringing up ECU Programming Tool KTM100 I see all is recognized correctly. You can also see below that the DME is supported and a plugin is available to communicate with that DME and calculate the correct checksum. Ready to start!

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On Sunday I was able to get the car on the dyno and grab some factory numbers.

Phase 1 – Reading the DME:

Here she is. Bosch MEVD172G DME.

Below are a few pictures of the outside of the unit. I cleaned up a bit of sand around the unit to make sure nothing gets in while I attempt to open it up.

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After about 30 minutes with a small blade going around the edges of the unit I was able to open the casing up. Luckily the components are not close to the edge of the case so as you’re going around it with a blade you don’t have to worry too much. But as always be careful not to jam the blade too deep; you may accidentally damage some of the surface mounted components.



Wired up the unit to the KTM100 clone using the PDF attachment I posted earlier. Reading procedure is as follows:

1. Connect wires from the provided harnesses to the DME pins as shown in the Bosch PDF including BOOT pin.
2. Power ON KTM100 and connect to USB on PC
3. Launch KTM100 Application
4. Connect the harness side of the cables to the KTM100
5. Click ‘ID’ in KTM100 Application to verify DME communication.
6. Done. Now you can carry out the function you need (read/write/etc)

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Phase 2 – Tuning:

You have two options:

1. Acquire and LEARN tuning software like WinOLS, ECM TITANIUM or similar, and spend time and resources on custom dyno tuning the car.

2. Take your dumped files and send them off to a tuner for tuning service. Most US tuners will flat out turn your business away. I wont call them out here but I would encourage you to contact them and listen to their response first hand.

I installed the DME back into the car yesterday afternoon. It was pretty nerve wrecking to sit in the car and push the ‘Start’ button. I was very confident I followed all the right steps but there’s always that sense of uncertainty in the back of your mind. What if i damaged something? At that moment I didn’t care if the remaps actually yielded any results; I was just hoping the car would crank back up. I held my breath, pushed ‘Start’ and the car sprung back to life. It was such a sense of accomplishment.

Autel MaxiDiag MD808 PRO Troubleshooting

Le 16 septembre 2017, 04:44 dans Humeurs 0

A communication error occurs if the MaxiDiag MD808 PRO fails to communicate with the vehicle’s ECU (Electronic Control Unit). Please follow the instructions below to check up:
1. Verify that the ignition is ON.
2. Check if the scan tool’s connector is securely connected to the vehicle’s DLC.
3. Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.
4. Verify the control module is not defective.
Operating Error
If the Car Diagnostic Tool freezes, then an exception occurs or the vehicle’s ECU (日ectronic Control Unit) is too slowto respond to requests. Please followthe steps below to reset the tool:
1. Reset the scan tool.
2. Turn the ignition off and wait for about 10 seconds. Turn the ignition back to on and continue the testing.
Scan tool doesn’t power up
If the scan tool won’t power up or operates incorrectly in any other way, please followthe instructions below to check up:
1. Check if the scan tool’s connector is securely connected to the vehicle’s DLC;
2. Check if the DLC pins are bent or broken.
3. Clean the DLC pins if necessary.
4. Check vehicle battery to make sure it is still good with at    least 8.0    volts.
Vehicle Coverage
On the basis of all OBD II compliant vehicles, including those equipped wth universal protocol – Control Area Network (CAN), Autel MD808/808 Pro Scanners expand vehicle system coverage and offer more diagnostic power to the vehicle technicians. Featuring expanded global vehicle coverage, the scan tools offer technicians a significant improvement on model years covered by supported manufactures.
For a complete listing of all the added vehicle coverage, download a copy of the official MaxiDiags MD808/808 Pro Software Release Note from
Product Troubleshooting_
Vehicle Linking Error

Recommendations When Using Autel MaxiSys MS906

Le 9 septembre 2017, 12:13 dans Humeurs 0

If you meet some problem when using this Autel Maxisys MS906 tablet from, there is some really beneficial recommendations, which includes battery & charge problem and machine running problem.


1.When the display tablet does not work properly:
Make sure the tablet has been registered online.
Make sure the system software and diagnostic application software are properly updated.
Make sure the tablet is connected to the Internet.
Check all cables, connections, and indicators to see if the signal is being received.

2.When battery life is shorter than usual:
This may happen when you are in an area with low signal strength. Turn off your Car Diagnostic Tool if is not in use.

3.When you cannot turn on the tablet:
Make sure the tablet is connected to a power source or the battery is charged.

4.When you are unable to charge the Autel Tools MS906 tablet:
Your charger maybe out of order. Contact your nearest dealer.
You may be attempting to use the device in an overly hot/cold temperature. Try changing the charging environment.
Your device may have not been connected to the charger properly. Check the connector.

NOTE: If your problems persist, please contact Autel’s technical support personnel or your local selling agent.

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