I recently installed The Ford OEM SYNC kit in my 2009 mustang. It has a dash mounted voice control instead of steering wheel buttons. Everything works great now except when I push the voice control buttons nothing happens. It does not even interupt the radio or say listening. I had the installer double check that the buttons were installed according to the guide and it looks fine. I have tried the master reset but no luck. Does anyone have any idea what to check next. There are no upgrades available for this unit. it is a sync 1.1