I also have an XF Sportbrake and also bought a TOMTOM 1005 live,had lots of problems with it ,ie no signal, losing signal, image of car on sat nav was not on the road, after contacting TomTom and doing an update it was still useless , so contacted Tomtom again and they told me to send it back they sent me a prepaid postage label ,said it would take up to 3weeks, after 2weeks I received it back and there have been no further problems with it at all, hope this helps