ACC/PDC Failure: No Communication - Troubleshooting

Hello everyone,

My Golf 7 GTD, manufactured in 2019, has recently started experiencing the following problem: the parking distance control (PDC) and adaptive cruise control (ACC) systems have stopped working. They are no longer communicating with each other, and the trailer hitch is also affected.
Could someone tell me what's the best way to proceed now to get things back on track?

Best regards, Dietmar.

Hi there!
If there is actually an (original?) AHK system installed, I would start looking for it here.
1. Power supply (fuses)
Does voltage actually reach the STG (Steuergerät)?
3. CAN bus wiring/faults.
5. STG AHK

Sure, here is the translation of the text from German to English:

"VG" translates to "Very Good" in English.
pretzelman01