2013 XF 3.0D S premium luxury: The GPS signal on the sat nav disappeared several times over the last 2 months, but usually came back ok. Now it has gone completely. I have checked the GPS antenna on the roof, and all appears to be ok as resistance checks compare with another unit. The next stage is to check the connections on the GPS receiver, but I cannot find it. I have checked behind the boot trim on both sides, and also under the front left seat. Does anybody know where I can find the GPS receiver unit ? or does anybody know why the GPS signal is missing. Any pointers would be much appreciated. Apart from this issue, its a fantastic car.
Regards
Gary