Warning sign Refroidissement

[WarwickBrowning]

I bought a 2010 model Peugeot 5008 in Greece earlier this year. As I drive up hills, a warning sign comes on which I have not been able to clearly photo as it goes as soon as I am on the flat. The word I remember is refroidissement, which I think is something to do with the cooling System. Can you give me any guidance s to what this may be please? Many thanks.

[GiveMeABreak]

It may be just the cooling system water level sensor that triggers when going up a hill. I'd make sure you coolant level is correct next time you have it serviced.