Radio and cd player won't work

This message indicates a communication error between components. Hands-on testing is required. It could be one of the components including the head unit or amplifier has failed, or could be a connection is a concern. An automotive audio specialist who focuses on original equipment components is a good resource, if you can find one local to you. Check with some local repair shops who can give you some advice. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops