Citroen C5 (2003) - Light on radio / information display no longer working?

There could be a few faults. Is it the dash display thats not working? If So, You may have dimmed the screen?? There could be a fault at your com-Unit, When you turn your side lights on this also lights up the radio display there could be a wire rubbing in the centre console.

Ex Citroen Tech
February 2009