I have successfully utilized ECUHELP KT200 ECU programmer to read and write the Mercedes CRD3.6x ECU without encountering any issues.

Let’s explore the step-by-step procedure:
Following the instructions provided in the manual, connect the multifunctional cable from the Mercedes CRD3.56 ECU to the KT200, and then connect the KT200 to the Bench box.

Launch the KT200 software.
Select Mercedes -> TC1797-Mercedes->CRD3.6X -OK

Click on “Connect,” switch on the dashboard, and wait for the internet connection to establish.
By the way, I am using the KT200 Car Truck Version from ecuhelpshop, which requires a stable internet connection.

Click on “Read Int Flash Micro” and choose a location to save the file.
Wait for the internet connection, and then wait for the process to reach 100%.

Click on “Read eeprom” and select a path to save the file.
Wait for the internet connection, and then wait for the process to reach 100%.

The next step involves writing the flash and eeprom.

Job is done!
ECUHELP KT200 proves to be an exceptional ECU tool for reading/writing ECU Mercedes CRD3.6x .