Hambert,

I can describe what happens with my VW, if it's of any help.

- N9 has BT turned on always, and has been setup to connect automatically to the car
- Start the car. Even if the radio is off (it is usually off), it will come to life as the phone connects, with the display "phone" and then turn itself back off. If the radio is on, it mutes the radio, displays "phone" and after a few seconds, goes back to the radio.
- If there is any audio at all from the phone (notification beep for SMS, email, some location triggered change in profile from Profilematic, GPS turn by turn directions), the audio will be piped through the car's stereo system. Even scicalc's keyboard clicking sounds are piped through the stereo.

I recently bought another car which has bluetooth capabilities. I haven't tested extensively, but it doesn't seem to be as bad as the VW so far.

Btw, my VW doesn't have the ability to sync contacts. After reading your posts, maybe that's a good thing