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Thread: Radio works with no head unit installed? WTH?

  1. #1
    Join Date
    Dec 2020
    Location
    Las Vegas
    Posts
    4
    My Cars
    2002 BMW 325i sedan

    Radio works with no head unit installed? WTH?

    I just pulled the head unit to replace it with an upgrade, but to my surprise, the FM radio is still playing when I turn on the key. The steering controls work, both volume and channel. Where does the AM/FM receiver reside in my car? Apparently it's not in the HU. I'm about to do another Google search but I'm wondering if it's behind the C-Pillar, driver's side, down by the seat. Any thoughts? BAFFLED!

  2. #2
    Join Date
    Nov 2020
    Location
    TISDALE SASKATCHEWAN
    Posts
    4
    My Cars
    2000 328CI
    Interesting. I was surprised to find an external amplifier, when I put my new deck in. but FM radio?

    Sent from my SM-G960W using Tapatalk

  3. #3
    Join Date
    Mar 2011
    Location
    PNW
    Posts
    932
    My Cars
    LS E46
    Iím assuming you have the satellite navigation unit in your car. Thatís actually just an interface, everything is in the trunk. You also wonít be able to put a regular stereo in your car because none of the speaker wires are there, that plug has also been relocated to the trunk. You will need to get a patch cable on eBay, theyíre like $35.

  4. #4
    Join Date
    Dec 2020
    Location
    Las Vegas
    Posts
    4
    My Cars
    2002 BMW 325i sedan
    I bought the patch cable as suggested by the manufacturer of the replacement unit I bought. Now everything makes sense. Thank you!

  5. #5
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,803
    My Cars
    2018 BMW M240i
    Did the car come with factory navigation? If yes, all of the electronix are in the left side of the trunk. The “head unit” is merely a man-machine interface.

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