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How much information is stored on a key for a 2004 BMW? And what is the most reliable way to retrieve all of it? I'm urgently seeking an answer. Anyone out there who can help me?
 

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Drink the koolaid or else
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what are you looking for, it would be an easier way for us to respond. i think only the dealer can "Read" the key.
 

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What you'll need to do is connect the key to a USB port on a windows based computer. It won't fit exactly, but just shove it in until it does. After that, windows should recognize it automatically. If that doesn't work, try another USB port, eventually, you'll get it ;)
 

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How much information is stored on a key for a 2004 BMW? And what is the most reliable way to retrieve all of it? I'm urgently seeking an answer. Anyone out there who can help me?
Only the dealer can read the chip in it. It stores your name, VIN, and milege.
 
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