Have you tried a hard reset of the phone? I did this on my Xperia X1 and bluetooth started working again. Also, when you have tried to pair it, I presume that you have bluetooth set on the discovery mode i.e. it can be seen by other devices?
Have you checked the bluetooth setting on the phone?
Once in the bluetooth menu, scroll right (single press of the right scroll key), takes you to another menu called "Paired devices"
Their should be an entry called Jaguar.
select options and scroll down to fourth entry which should read "set as authorised"
This makes your phone pair automatically without your intervention.
If all else failes, follow the same procedure, but this time delete the Jaguar profile, and pair the phone anew.
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