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Thread: No Warning Tones

  1. #1
    Join Date
    Mar 2016
    Location
    brooklyn
    Posts
    2
    My Cars
    2011 535i xdrive

    Exclamation No Warning Tones

    Hey All,


    Recently i turned my car on and speaker made a loud "White noise" type of sound. I quickly restarted and got the same thing. I drove away with the volume all the way down and muted. After another restart the radio was fine everything working. Now this morning i get "Attention: No warning tones". There is no audio at all,
    no door chime parking sensor chime. No music at all from fm or bluetooth.

    No matter how many times i restart i get the same notice. No sound from anything. I tried pulling the negative terminal on the battery but get nothing. I tried looking at the amp, pulled the MOST fiber connector it has a glowing red light, along with the Bluetooth module. Is there anything you guys recommend? Does anyone have a MOST Bus Loop diagram showing what connects where? going crazy not having any sound at all.

    Also, does anyone know the amp part number? I have the HIFI Professional but can't find the P/N seems maybe it has changed.
    Last edited by brooklynjay01; 03-22-2017 at 10:22 PM.

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