I tried it with the BB gateway disconnected still doesn't work!
I noticed though - the phone is paired with the car when I press the home button on the phone to activate siri the little mic comes up and waits for a command... at this point I can say something - for example 'what time is it?' and this seems to be picked up from the mic in the car, then siri actually responds and I get feedback on the phone. But the car stereo does not mute and all this is not heard through the car speakers. Thought this was weird... it's connected but doesn't mute and come through the car speakers. Could it be a setting somewhere else or on the phone perhaps?? Do I need to change something else??