Since the EDC17CP57 is protected, you will encounter errors. Here is the fix for the top 3 issues.
Deep Dive: Reading Mercedes EDC17CP57 with Ktag 7.020 & GPT Cable – Step-by-Step How to read Mercedes EDC17CP57 with Ktag 7.020 GPT cable
The EDC17CP57 requires a specific combination of power, ground, CAN signals, and GPT signals. Follow the Ktag on-screen connection diagram strictly, as pinouts can vary slightly by hardware generation. Main Connector Pinout Pin 5, 46: +12V (Red) Pin 2: GND (Black) Pin 68: CAN-L (Blue) Pin 67: CAN-H (White) GPT Connection Since the EDC17CP57 is protected, you will encounter errors
The Mercedes-Benz EDC17CP57 is one of the most common Engine Control Units (ECUs) found in modern BlueTEC diesel engines. Found in vehicles like the W166 ML350, GLE350d, W205 C250d, and the W212 E350d, this Bosch ECU is powerful but requires specific knowledge to read and write safely. Follow the Ktag on-screen connection diagram strictly, as
For the EDC17CP57, you will use a "Direct Connection" to the ECU pins. Connect the wires as follows based on standard EDC17CP57 pinout guides : Wire Color Signal Type Connection Point +12V Power Black Ground (GND) Green White Grey Connect to the specific Boot pad on the PCB Yellow/Orange GPT Signals Connect to the designated GPT pins on the ECU connector