You must go into the Set menu (so you can see the Volume, brightness, split-screen etc.) then hold the Menu key for 8 secs.

Once in the service menu you will see things like telematics/GPS, etc. Scroll down to the bottom of the page and onto a new page. Perspective mode is listed there. Switch it on.

Go back into GPS Navigation. With the map view on screen, bring up the Map Positioning Menu, choose from Pointing North, Direction of Travel or Perspective View.