Update: So after 1 year I think I have worked out the odd mirror switch behaviour.
The mirrors will only fold when using the switch after moving off at a certain speed, possibly the same speed that the doors autolock. They will then fold when driving up to speeds of 30 mph. Above 30 mph they don't fold.
Getting the deal to look at this next week. I wan't them to fold when I move the switch regardless of speed!.
I unfold mine every morning and at work using the in car switch with the engine running but before I move off, so speed has nothing to do with it. If the button press on the remote stops folding mirrors/opening/closing windows (as mine has done a couple of times) just reset the windows as in the handbook for if the battery has been unconnected and they work again.