Hmm, nothing like that in my software, I've tried to register on the forum with the serial but nothing is happening as of yet, HOWEVER...
On the drive to work this morning, I selected the start-stop status screen and as expected, the screen said 2 things,
1) Engine must be running
2) Air conditioning requires engine to be running.
1 - is always a little strange because the engine was running.
2 - is the same message I've always had.
So when I pulled up at the first junction, in neutral and pressed the brake, the SS-Disabled symbol flashed up in the MFD and the status display still had these 2 messages, but as soon as I pulled away from the junction the status changed to "Start Stop system is available".
Sure enough, when I came to stop at the next junction, the engine stopped. So it looks like the main problem was that the internal humidity sensor was activated in the long coding, deactivating that has brought the system to full functionality, thank you for helping with this. I now feel a little more confident about moving on to sorting out the erroneous sensors now that it's working as it should, even if I don't actually like the SS function.
Regards, Dave.