The Android v.1.5 Bluetooth firmware seems to be buggy and doesn't always work correctly with Bluetooth-ready car stereos. I have a Blaupunkt in my car which has worked perfectly with my last 3 phones but the Hero refuses to recognize it as a handsfree device (however it will stream music to it). Unfortunately, that's exactly the opposite of what I want to do.
This problem is not exclusive to the Hero and has been reported by owners of many devices running V.1.5 and earlier. It also doesn't affect all car stereos [and other multi-function Bluetooth hardware], but it seems to affect all of some models. I'm beginning to suspect that it only affects car stereos with Bluetooth 1.2 archatecture but Bluetooth 2.0 devices supposed to be backwards-compatible with Bluetooth 1.2 hardware.
Google/Android won't even acknowledge the problem, but they seem to have fixed it with Android v.1.6 and later. I'm just patiently waiting for the firmware upgrade we are supposed to be getting and using a Bluetooth headset in the meantime while I'm driving.
Pete
I'm having the opposite problem with my Kenwood KDC-BT838U. I'm getting the hands free just fine but I have to unpair and re-pair the phone to get the music to push out. Once I turn the radio off the stream won't work until I re-pair again.
The phone hands free works fine though so its not a total wash.
