This one: https://www.ebay.co.uk/itm/113735549947
The car came with an older disc, which worked in every respect except showing maps. The Map section on the display is always greyed out but it will hbappily find an address and take you there with symbols directing you.
I was hoping that the newer CD would bring the maps to life but it is the same.
Does anyone know how to check the software version of the ancient Sat Nav unit and, most importantly, know if an updte would help?
The system is the type with the large centre colour screen with CD reader in a cubby hole near the driver's knee.
Like this one (picture borrowed from another post):

