……
I don't think mine has learning. Or if it does, I've never bothered, and I've swapped out the main audio unit a number of times for a variety of reasons.
Clearly, I just talks proper, like the Queen.
I’ve just been through the 40 voice learning dialogue again. When completed, I pressed the button and said ‘Navigation’ and that worked fine.

I did eventually get it to work after several attempts but it’s so unpredictable that I’ll stick with the menu wheel thingy. I can say ‘Navigate To’ and say the named place but that’s even less predictable.
Nav Postcodes are easy as I have a writing touchpad on the console for that, and that works great, even though I’m doing it left handed. It’s got to be me doing it wrong though, as it works flawlessly on every video I’ve watched of it on YouTube.
I’ll get one of the younger grandchildren to show me how it works. 

