A few weeks ago my voice command function stopped working completely on my F90BT. When I push the multi control button (large knob) the prompt that used to appear (the prompt that waited for your voice command) no longer appears. When I push the button all I hear is a "ding" and nothing happens.

 

This is the ase no matter which mode I am in (IE.. ipod, sirius, FM, AM, Map etc). I didnt' change any settings and have not touched the unit at all.

 

Anyone know why the voice prompt might be turned off, or why it no longer functions?