Now that I've got other things out the way, I sadly [for me, anyway] have to report that I still have a battery drain despite the 'Right Rear Door' ECU no longer reporting that the button is being pressed continuously.
So now I've got to reinvestigate from scratch
I've got a little bit of help from the new VCDS Battery History tool, which does at least tell me how much went out the battery in the last idle time, but I might have to resort to the 'measure the fuse current' trick and try and detect a small[ish] current flow.
However, one thing puzzles me; since I have to open the driver/passenger door [or boot] to get at the fuses and opening the doors triggers the gateway and entry system, does anyone have any suggestion as to how to overcome this issue please?
Julian