I have a e320 2003 and the radio unit doesn't work anymore i thought the display (lcd) was gone . So i when to Mercedes an bought a new head control unit radio for the car and had them replace the old unit.... now the lcd turns on and it has a Mercedes sign(logo) then turns off....i cant play cd's or even listen to the radio....the cd changer will not open...... what can i do?

all fuses work fine,

I feel your pain, it just happened to my 2003. Nothing works or even opens. I can not get CD's in or out and of course with the sterio not working my blue tooth will not work either.

If you hear about what the issue is, please let me know and I will do like wise.