I'm not sure if I'm correct but my car has the 2g Mmi Symphony and my car didn't provide an AUX input therefore it seems my Mmi has AUX disabled. I'm trying to add an AirPlay receiver into my car and I got the video part working but the sound requires me to connect with the AUX feed but it's locked apparently and it won't allow me to have external sound incoming. How can I unlock this? My garage dude told me their having problems unlocking it.


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