Feli

I changed out the heater core and now the radio does not work. You hit the power on and the Mercedes logo pops up and that’s it. I pulled the 6disc changer and the radio and everything is connected.

any assistance would greatly appreciate it!

konigstiger

If all fiber connections are fine disconnect main battery for several minutes in an attempt to reset.

rocky472

Try the procedure in this link. I had the same issue with the radio stuck on the MB logo.

http://www.mercedesmedic.com/no-sound/

Feli

@konigstiger sorry took me a minutes to mess with the car but it worked. Now I have a working radio. Thank you!!!