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    1. · Registered
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      Or just unplug it.
      Best way to know if it's the Hood Sensor. When it isn't plugged in, the alarm believes the hood is closed. I replaced mine earlier this year for this same reason. It's just another common E46 failure prone part. Not an expensive part to replace either.

       
    1. · Registered
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      4,090 Posts
    2. · Registered
      2002 325i
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      2 Posts
      Discussion Starter · #3 ·
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