Due to my problem, I would buy one of the two cables.
1) Interface diagnostic OBDII VW HEX+K+CAN USB COM VAG
2) USB KKL VAG-COM 409.1
What is the best, please?
How I can download and use the vag commander, please?
Ok. I tried with engine on, put the needle to zero. Then, ignition on, start. Second prove... Disconnect key, ignition on... Needle below zero... Oh f@@k... Suggestions? I m getting crazy, thanks to everybody. M