I have a 2004 s430 and the screen reads system unavailable shall I replace or ca

What is your question?

screen reads unavailable sometimes it works shall I replace it or can it be repaired there are no sounds coming from the radio wondering what needs to be done or just replace it

What makes this problem better or worse?

radio not working

How long has your 2004 Mercedes-Benz S430 had this problem?

a month