I have the same issue with my 2012 XF. My guess is it's an early release of the nav software (program, not maps).
The stealers want £175 just to plug the diagnostics in and then £95 per hour whilst running any necessary updates.
Apparently, it can take 2-3 hours depending on updates required. Having estimated between £400-500, they can't guarantee this will fix the issue.
I'm probably going to buy a mongoose adapter and update myself..