Radio Display not Dimming, Neither does the Heater Controls

[ColinC]

I wonder if someone has had this problem.

I went to turn on my lights this morning, and noticed that the dimmer has stopped working to a point where the radio display nor the climate controls are lighting up.

Everything else is working as it should, and the displays are normal with the lights off. With the headlights on the dash itself is working, and the stereo lights up, just not the display, nor the heater controls.

Any Ideas?

Colin