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Thread: Transponder key lost. How to bypass

  1. #1
    Section 8
    Guest Section 8's Avatar

    Default Transponder key lost. How to bypass

    The transponder unit inside a BMW uses a series of pulses sent to
    Engine Computer for verification. I like to record this signal and play them
    back on my desktop PC's music program. I've lost this key once and it
    cost $200US to get another. I will use a hand held tape recorder to
    record the series of pulses. How do I convert a data (electrical, 3vdc)
    signal into a usable sound waves using a microphone?

    Thanks

  2. #2
    dB
    Guest dB's Avatar

    Default Transponder key lost. How to bypass

    "Section 8" <none..........m> wrote in message news:<c7d9bad82eaecab0c4dba699b852ebda@news.bubban ews.com>...
    > The transponder unit inside a BMW uses a series of pulses sent to
    > Engine Computer for verification. I like to record this signal and play them
    > back on my desktop PC's music program. I've lost this key once and it
    > cost $200US to get another. I will use a hand held tape recorder to
    > record the series of pulses. How do I convert a data (electrical, 3vdc)
    > signal into a usable sound waves using a microphone?
    >
    > Thanks



    You will have to use the d.c. pulses to switch an audio signal on and
    off, and record that.

  3. #3
    Metal Dave
    Guest Metal Dave's Avatar

    Default Transponder key lost. How to bypass

    > The transponder unit inside a BMW uses a series of pulses sent to
    > Engine Computer for verification. I like to record this signal and play them
    > back on my desktop PC's music program. I've lost this key once and it
    > cost $200US to get another. I will use a hand held tape recorder to
    > record the series of pulses. How do I convert a data (electrical, 3vdc)
    > signal into a usable sound waves using a microphone?


    You'll need to raise the volume on the transponder to 11 and push the
    unlock button really hard to get the microphone to pick it up.

    Dave

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