Today I had the AHK retrofitted. Westfalia incl. E-set. Those, which would also offer VW as “original”. I was surprised that all the trailer functions work without a VW unlocking. However, the return camera no longer works (PDC works). Plug and fault diagnosis have checked it all again shortly before the end of the evening. But nothing found. Is the camera function the reason why the VW the E-set still has to be unlocked? Or gives e Is there any other surprises that have not yet been noticed? Today it was too late to make a presentation at VW. But I would be interested in it now. Does one of you have a knowledge of the problem? Thank you and many greetings Thorsten