Pushing the "Phone" button (on dash and on steering wheel) has suddenly stopped yielding "Phone Menu" (new 2010 Fusion Hybrid).

The car ignition was "on," the car in park, radio on, bluetooth cell phone connected to Sync. When I pushed the "phone" button to get to the phone menu, there was no response from the system.  I've tried this repeatedly, even varying the push times, but nothing happens.  Menu does not come up, and the radio (currently Sirius) keeps playing.  I had considered resetting things to factory settings, but apparently you have to use the Phone menu even to do that.

Via voice commands, it is clear that Sync is connected to, and interacting with, my cell phone properly.  For example, I can end a Sync session by a long push on either "Phone" button. 

This problem came after an unsuccessful attempt via USB flash drive to load phone contacts into Sync using SyncMyPhone. I had used Windows 7 to create the contact list (that worked OK), but Sync reported that the attempt was unsuccessful. 

What might have happened to cause this?  The "Phone" button did indeed work properly (bringing up the phone menu, etc.) just before I tried the unsuccessful loading of the Contacts I previously reported.  Now it does not respond.  Did I accidentally change some setting?  Might the unsuccessful installation affect the system in some way?

Thanks in advance.    

An e-mail exchange with the local Ford dealer yielded the embarrasingly simple solution. 

What I thought was a quick push on the phone button was, in fact, too long.  A very fast push (perhaps a quarter of a second or less) yielded the phone menu. 

I have since run some trial-and-error experiments with the phone button on my system.   The "press" function, as called for in the Sync owner's manual,  seems to mean pressing (or tapping) the phone button for about half a second or less (judging from timing based on the first two syllables of "one-one-thousand').

Perhaps the Sync manual might emphasize the difference between "press" and "press and hold" in the future.

Hope others might find this useful.