They make an Aux. Port that is a simple plug-in arrangement that gives you a standard 3.5mm female jack that you can route to the glovebox, then use a male/male aux cable and plug it into your phone, or whatever source you want to use.
https://www.ecstuning.com/b-genuine-...gaAjAnEALw_wcB
Remove the head unit, behind it there is a wire harness that is wrapped with black gauze tape, unwrap the gauze and you will find a 2-pin connector, this is where the Aux Port is connected. You then use the MODE button on the display screen to toggle to Aux. The Waze lady will give traffic information through the sound system as it comes up. I don't recall what happens to the BT connections, but I can't think of any reason why BT for the phone services would not work while using the Aux Port.
I have the '05 with the MK IV Nav System. I recall that there are two different connectors buried in the harness. That is, there are two sizes of connectors that are available. I bought the wrong one first.