Voice Dialer no longer working correctly

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http://forum.xda-developers.com – Before this last week, I was able to connect my Galaxy Nexus (GSM model) to my XPLOD car deck, select BT Audio on the deck, press the button, and receive a voice prompt to make a call. It was very convenient for when I had to make a call while driving. Some time during this last week, the feature stopped working. When I press the button on the deck to initiate a call, the screen flashes gray (like the background of the voice dialer prompt), then returns to the previous screen and I hear no audio prompt. When I try to make a call using my Bluetooth headphones (LG HBS700), the phone does t (HowTos)