I've done the 'un-do' - 're-do' no success; was advised by Renault Service to disconnect the battery for 10 mins and reconnect (also have to reset elec windows!). Tried this, however problem still persists!?
I think I'll just blink at the same rate as the flashing speedo as I'm driving along so it always appears on (or off if I get out of phase)
Cheers for that Shaun wall will perservere.............