Mercedes X118 MRD1 Output 'Circuit 50'

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  • Thread starteruser138536
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I checked for an external immobilizer and received confirmation from the previous owner that it was not installed.
The ECM readings confirm this, as the device receives the correct "input circuit 50" trigger signal from the EZS and other modules. However, the ECU does not output a trigger signal through the two wires that control the starter relay coil, so the starter relay never activates.
I'm trying to reset the P06020 code after programming the transmission, but it requires a special password. I've tried several combinations generated by my calculator, but none of them work.
Can anyone generate the correct password for the attached special procedure?
I am using XENTRY 03.2025 and the vehicle VIN is W1K1186141N224879.
If after performing this procedure the car still does not start, I would consider replacing the ECU.
I recently managed to start the engine by bypassing the starter relay and using a small amount of engine starting spray. Without the spray, the engine cranks over with the relay disconnected, but it won't start.
I also noticed that after turning off the ignition, there is a delay of about 2 seconds between turning off the ignition and the engine shutting off.
 
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