This is not an mig related question but will post here cause it is definitely  an electrical related.
My friend xas a XF with premium luxury equipment.
Looks like when he bought the car the dealer stole the gps module (rewriutten the contract and removed the gps module from the car).
The friend contacted the service in Austria and they told him the car had gps installed in factory as standard.
So when he called the same dealer and asked can he buy the module as an extra the dealer wanted 10,000 Euro-s for it 
I really have no experience with the factory installed gps devices, but need to know some information.
What kind of gps are we talking here about?
If it is only some sort of module can you use some other similar module which will work with the car?
I know the questions are difficult but hopefully someone will be able to provide a little help

Have no idea about headunit, although I think all xf have the same  headunit. Think it is only navigation module missin (the part in the boot)

Ok Dave thanks for the info.