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Thought I'd send a quick update here. I replaced the MULF2 module in the trunk because it had signs of being underwater. Now the bluetooth, aux, and USB are all working. The MULF2 is located under the spare tire in the trunk. I bought a used one from ebay for $50 from a 750i with the same part number. No coding was needed. If yours looks like mine then replace it.
03-15-2019, 09:27 AM
