How do you activate voice control? I mean from the steering wheel or on RNS? I can use it by pressing the home button on the phone but i am looking for a way to activate some other way using the steering wheel etc.
I think it requires a patch from Apple to give you the option to disable Siri from running over bluetooth so that cars with voice rec don't get confused as to what (who?) you're talking to.
Which version of the RNS 510 do you have? The unit does the bluetooth in the unit. If you have the Rev-E it will alloy you to also control music playback, etc, but you have to wire the mic to the back of the head unit and then from the head unit to the bluetooth module.