If you use an independent to service your car and are therefore likely missing out on the free map update with dealer service then this may be of use to you.

DiscoverCare < Innovation & Technology < Volkswagen International
Select download for Windows or Mac. It will install software on your PC that automates the update process. At some stage you will need to insert your original VW card into the SD slot on your PC etc. A backup of existing sat. nav. data will be done to PC before the card is updated. Make sure you select Multi Region Map 2 when given the options.

Worked like a charm for me, now have 2017/18 maps.