I wish someone knew also. I can't beleive that no one seems to know. I tought it was a "mute" button cause on my husbands Stang the phone button also says mute on it and that is exactly what it does, but on mine it does not say mute and when I hit it it does nothing.  Oh well I will figure it out one day.
__________________ Mine: 2008 Mustang Coupe w/Pony Pkg, Ebony Solid C/C, Charcoal Black Leather Int, 4.0L V6, 5R55S A/T
Husbands: 2007 Mustang Convertible, Windveil Blue Ext, w/Black Top, Medium Dove Cloth Int, 4.0L V6, 5R55S A/T
Dogs: 1998 Chevrolet Tahoe LT, Emerald Green Metallic Ext, Neutral Leather Int, 5.7L V8, 40L60 A/T | 
2008 Mustang Shaker 500 "phone" button 
It's not in the owners manual and the used car salesman that sold the car to me was not sure. Is it for Bluetooth? or is it for a car phone? All the manual says is "Pressing phone results in "NO PHONE" message showing in display." Well I already know that. If it is bluetooth can someone please provide instructions on how to sync my Blackberry to it. Thanx in advance.
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