Question about 2007 Mercedes-Benz ML350

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ML-350; no sound from radio/CD /Tape. When

ML-350; Suddenly started having problems: no sound from radio/CD /Tape. When switching to CD get message "CD Player not installed". In Audio Adjust menu last row of selections "STANDARD" "DRIVER". etc no longer appear on the screen

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  • carlton11800 Jul 16, 2009

    Thanks for the response

    . I have not touched anything and will not attempt to do so either. Where is the MCS?

    I was hoping it was a software glitch that could be reset since a menu item disappeared and it thinks I don't havce a CD.



    Do you think it will be a difficult or time sonsuming fix. I'm trying to gauge how expensive it will be.

  • carlton11800 Jul 17, 2009

    Yes

    thanks veyr much

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Hello there, sounds like the MCS sensor has lost communication with the radio head unit. If you did not move anything around inside the dash, or try to remove the stereo unit for any reason then something has failed internally. In this case you will definnitely want to get it checked out by a Mercedes Dealer as it's very easy to damage it further if you are unsure of what you're doing.

Posted on Jul 16, 2009

  • Tim Grayson
    Tim Grayson Jul 16, 2009

    It is inside the Dashboard, you would have to pull apart the dash to get to it, I definitely do not recommend you try to fix it on your own. The reason it doesn't think there is a CD on the menu is the sensor isn't detecting your cd player for some reason so it really thinks it has been removed. Even if you get it to re-detect it there is a good chance the cd player will be in factory lock mode (a security feature to prevent someone from taking the cd player out and being able to hook it up elsewhere without going through the factory).

    It's very hard to say, it could be something as simple as a technician getting in there and unplugging and replugging it or it could be that the output from the radio actually failed and you would need a new radio unit. I can't remember what the factory radio unit costs, but in your case with all the menus and everything tied to the radio you will want to stick with factory. Cross your fingers and hope its something simple!


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