Dashboard failing

The dashboard in the car is sometimes blinking on and off, sometimes it goes completely dark, sometimes it just fades. It does this at 60mph and it does it while you're sitting in traffic. Figures like the fuel range go crazy and obviously can't be trusted. The rest of the car seems to work. Sometimes the beep sound of the key fob locking the doors is made even when driving along. Wife finding it a bit stressful at the moment.

Any ideas gentlemen?

PS it's a Renault Scenic Megan 1.6 from 2006

Dashboard failing