As the title mentioned, eobdtool.co.uk engineer recommends Launch X431 ECU & TCU Programmer and X431 X-Prog3 PC Adapter. Both Launch X431 Tool can clone Mercedes-Benz CRD3x.x TC1797 ECU on bench without any issue. No need X431 tablet. The difference is that PC Adapter need to work with X431 X-Prog3 key programmer.

Main steps:

Step 1: Connect Launch X431 ECU Programmer/X431 PC Adapter to a computer via USB cable

Step 2: Input crd3 in the search box to quickly obtain the Benz CRD3 ECU model (i.e. Mercedes A- Class 2012-2018) VGS3-FDCT CRD3x.x_TC1797)

Step 3: Select Bench mode

Step 4: Check the direct connection diagram, and connect X-431 ECU Programmer and CRD3 ECU by the Bench cable correctly, and connect power supply as well

Launch X431 PC Adapter needs to connect with X-Prog3

Step 5: Read and save the original ECU EEPROM and FLASH data

Step 6: Connect to a new Benz CRD3 ECU, and back up the new ECU data

Step 7: Select the original ECU data to write into the new ECU separately

Step 8: Disconnect ECU after the writing operation is complete.

X431 ECU Programmer clone Benz CRD3x.x:

X431 X-Prog3 with PC Adapter clone Benz CRD3x.x:

UK Professional OBD2 Tools Online Shop