Do you have USB?
Id so go here http://www.ford-mobile-connectivity.com/downloadsUpdates download and update your stereo.
If not it will be a dealer.
Have your tried searching for Ford Audio from the phone?
Could be the HTC is too new for the head unit at the moment.
I would remove pairing and try again just incase something went amiss when you paired it.
Cheers m8.. mine is a slightly older model than the one on the link. It doesnt have USB. It has VC Bluetooth.. the dealer told me that was fitted as an extra by the original owner.
I have bonded and debonded a few times but no joy.. I think as you say.. that the phone is too new for the car and unfortunately I can't update the car..
Thanks for the reply..