Apologies for my poor description of the problem re my question.
I have an RCD 310 fitted. I don't have the optical parking sensor fit (I think - its very hard to determine sadly) so my assumption is that there should be a confidence light on the dashboard. With my towbar mounted 13-pin plugged bike rack plugged in I get no tell-tale to confirm the lights are working. I now have no confidence that the towbar is fitted properly despite being a dealer fit.
Furthermore, I have to say that the VW documentation is appalling.
The book is the most poorly organised document set I have ever seen which has compounded my frustration with the learning experience of the Van. I can't even determine where the fuses are for the tow bar however, I have an impressive set of warnings as to what might go wrong if I breathe heavily etc etc in every chapter.
What should have been a quality experience given the brand I have purchased has turned into one frustrating episode after another.
That rant was due to the lack of ability to determine whether a simple light on the dash board should be lit when my indicators operate (a legal requirement in my understanding if there is no confidence bleep check).
I run a reasonable sized organisation which delivers to a standard with appropriate engineering rigour and governance and my VW experience has been a frankly amazingly 2nd rate one.
Given this was an expensive (in my view) dealer tow bar fit I am working myself up to a suitable engagement with VW customer service on my 'experience'.
A product that costs this much should be far better than it has been thus far.
SIgh.....
Off to try and find a VAG dealer close to my current location to have the towbar fit checked.......
:crazy