This is all interesting reading My T6 (as pictured) has been at VW New Zealand now for 5 days and they still cant workout how the automatic (factory Fitted) rear door can be made to open when the trailer is on the van. It has a factory fitted tow bar and loom. When I pug my trailer into the socket, the RH indicators flashes fast on the van but nothing on the trailers RH indicator. Also one other thing, This is a Caravelle passenger van and they tell me that I have to buy the Car-net, Apple Carplay software for the radio. Does that sound right? Thanks for any help you can offer.