Thread: **Bluetooth Retrofit Guide** for TCU and ULF
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      04-11-2012, 07:22 PM   #304
gjimmy
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Drives: 2009 335i
Join Date: Jan 2012
Location: Los Angeles

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Is there a surefire way to determine if you have Phone Prep by looking at the wires in the trunk or under the pedal trim or something?

I think I have it but I am not 100% certain.

thanks!
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