Thought I'd share this with you guys. My wife (who owns a 55 plate C-Max) received a letter from Ford today, it reads:-
4c570-Focus & C-MAX - engine cooling fan control module - safety recall
Dear customer,
Ford motor company limited constantly monitors production processes & vehicles in service. Investigations have identified that vehicles operated in countries which have high road salt usage during the winter months may experience a build up of corrosion on the control module of the cooling fan assembly. In extreme cases the corrosion can propagate into the electronic circuits and result in overheating. In rare cases the overheating may be sufficient to ignite the module & surrounding wiring & components.

Just googled fault & it looks like old news. Maybe my wife's missed the recall (she's only had it 6 months)