The audio levels between my iPhone and the built in entertainment are very different. All the audio that comes from the iPhone is much lower, probably 8 to 10 dB, than the audio from the built in radio. This includes AM, FM, and XM. And yes I have the audio on the iPhone turned all the way up. I hope someone can figure out how I can get the levels closer.

 

When have a conversation using the Bluetooth, turn the volume up on the radio.


That is what I had to due in my Taurus. It has the same sync system you have.

 

I find the big difference between satellite and FM really annoying. As well as the iPhone.
I can see the BT being a little off but the different sources being that far off??? Come on!!
I also want different tone settings between sources too. All my aftermarket head units had that simple function.