I just bought a 2009 BMW 528i. It’s my understanding that the car doesn’t support A2DP which is a technology that would allow me to connect to my stereo system via Bluetooth and stream music wirelessly. Currently, I have a dongle which connects from the dock connector on my phone and splits off into a USB and 3.5 mm jack in the car’s armrest. I’m assuming the USB interface allows for iDrive control of the stored music while the 3.5 mm handles the music stream.
The car does pair over Bluetooth with my iPhone in order to make hands free calls without the phone being plugged in but what would be required if I wanted to be able to just pair the phone over Bluetooth with my car, switch to the AUX stereo input, and play music without having to plug it in?