If your Jag doesn't have the nav option, no problem, install your own via an iPad mini. I know a some people will cringe at the thought, but I like it and I can show you how easy it is. This way you can not only choose any one of the dozens of GPS based nav systems available, but you can do anything else that you can get an app for. Check it out

 

Not the most attractive solution, but 8 points for flexibility.