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Thread: SOS failure

  1. #1
    Join Date
    Aug 2017
    Location
    Branson, Mo, USA
    Posts
    8
    My Cars
    2010 550I 2006 330CI

    SOS failure

    2010 550i.
    One minute everything fine. Next minute sos failure on the SCREEN, I’ve lost Bluetooth functionality and no satellite functionality. Mac works, chimes work, and regular radio works.
    You tube’d the topic. Bought the optic fiber loops and started chasing the chain.i have signal into sat module nothing out.
    But my question ultimately is with the “loop” in place why am I still getting the SOS malfunction and nothing changes. I get that no satellite stations if module is bad, but wondering why no Bluetooth capability and sos inop still?
    Are this inop functions somehow “wired through” the satellite module or am I actually chasing 2 separate module failures?
    Thank you for anyone taking the time to chime in on this.

  2. #2
    Join Date
    Jan 2007
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    .
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    7,708
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    Those functions are not associated with the SDARS module. It is possible you have two failures. Does your satellite radio work if you bypass the TCU?
    ASE and BMW Master Certified Technician

  3. #3
    Join Date
    Aug 2017
    Location
    Branson, Mo, USA
    Posts
    8
    My Cars
    2010 550I 2006 330CI
    I don’t think I tested that far. I convinced myself that satellite module was the problem. I will test further

    - - - Updated - - -

    Can you help me with the tcu location? Is it the long rectangular module that is at the same location as the satellite module? On the rear drivers side inner fender? 2010 550i

  4. #4
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    Are you sure you are looping out the correct module

  5. #5
    Join Date
    Aug 2017
    Location
    Branson, Mo, USA
    Posts
    8
    My Cars
    2010 550I 2006 330CI
    That’s the thing. I have the red optic light going into the sat module. But nothing coming out of the module . When I loop the sat module the. I get signal into the tcu module?

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