So an update from me,
I finally got a reply from my supplier and after a few back and forths they have said I can post back the module and they will 'sit on it till they get a car in that they can test it on'. Not too happy with that option, so I've simply ripped out the module and 'hey presto', no faults. Took it for a test drive and my cruise control and front assist work perfectly.
Im going to take a few videos with it in and out and send it to them to prove its a module issue and not wiring.
Fingers crossed I get a solution soon.
Does anyone actually know what programing the tow bar installers do?
There wasnt a local westfalia installer, so I've done the whole install myself and was trying to code with a VCDS, but I couldnt even get the module to communicate on the bus.
Have you had any luck with your VCDS scan?