Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
If the choice/option was there before and now it is not this sounds like the radio/command unit has lost the coding.The coding is programming that the head unit/command system uses to see what the components are that are installed on your vehicle.If the coding/programming has become corrupted this issue here will occur like this.The other reason can be a fault in the command unit itself not seeing the satellite radio system.
What will have to be done from here is to have a dealer or authorized repair center check the coding for the radio/head unit and see if it needs to be reprogrammed again.If it does they can usually do this in less then an hours time.If there is a fault with the radio/command unit itself it will need replaced then programmed by them.
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