[b3lha]

Originally Posted by dimitrov2000

Sorry I forgot to mention that in my post
When I type "78123400" in the text box and hit enter
nothing is returned in the receive box except "Tx78123400" or somening like that and I asume it is only confirmation of the command sent but no repeated reply at all. I didn't try the TCU yet.
And in addition I have to say that the wiring is the stock one
No trace of somebody messing around.
I tried the selfdiagnostic, it works perfectly and it seems that I was the first one pulling out the blue diagnostic wires. No idea what ECU can it be or is it the above universal command that any ECU should respond something.

Either the ECU can't hear you asking, or you can't hear it replying. Until this works, it's a waste of time to try any other software.

Try talking to the TCU, send "45C00000" (or even the AirCon "890002"). If that doesn't work either then I would suspect your cable is faulty. Can you verify the cable on another car?

Double check everything:

Everything plugged in
Correct settings: COM port, baud rate, parity, data bits, stop bits
Ignition on
Key in "On" position.