Back on the battery flat issue again while
http://www.freel2.com/forum/topic30025-15.html
is helpful I still don't know why my battery goes flat in a couple of weeks.
Bought CTEK battery Sense and kept monitoring it until December, then wouldn't update the iPhone app. Assumed it was just shortage of spacein memory and never got round to it.
However flat again yesterday so thought I would get monitor working again. Deleted photos, used the easy memory reclaim trick of pretending to buy a film from iTunes. Still not working - the app just sat on update...
So tried deleting app, reinstalling, reregistering and again nothing.
I got it working by disconnecting sensor by removing the 1A inline fuse, and it then reconnected and works OK.

None of which helps the basic problem, but means I will use the car again when battery is low, to keep it working! FL2 11 S Black 😂
Gone Disco2 TD5 GS