dash on 2004 scenic megane dci 1.9?

the dash keeps going off then on very erratic no sequence or pattern. it stays off no longer than 5 mins and stays for ages but can go off as and when it likes. There is a sound of a relay chattering somewhere. when it goes off it resets all resettable functions, clock , trip , range, fuel usage . any info would be grateful.
Cheers Chris