Hi Folks
Just had the above flash up whilst on the road. Usual tactic of turning it off and turning it on again hasn't done the job

Disconnect battery perhaps?
I have the TMC box fitted but I presume that wouldn't cause the problem as I presume it's electrical. I'm in France (the car is with me) just now so no chance of getting it to a dealer until I get home next week. Do you think they will be difficult if the TMC is still on the car when I take it in, presuming the problem hasn't sorted itself by then.
Cheers
Jon