To save your time, here's a more or less complete list of FeCs (copied from Golf7 forums) :
00030000 AMI (USB Enable)
00030001 Gracenote
00040100 Navigation
00050000 Bluetooth
00060100 Vehicle Data Interface
00060200 Infotaiment Control
00060300 Mirror Link
00060400 Sport HMI
00060500 ??
00060600 ???
00060700 ???
00060800 Apple Carplay
00060900 Google Automotive Link
00060A00 ???
00060B00 ???
00070100 SDS
00070200 SDS for Nav
00070400 ???
021000xx Nav Maps EU
021100xx Nav Maps
021200xx ???
021300xx ???
021A00xx ???
021B00xx ???
021D00xx Nav Maps
023000xx Nav Maps EU
023100xx Nav Maps
023D00xx Nav Maps
033000xx Nav Maps EU
033100xx Nav Maps
033D00xx Nav Maps
061000xx Nav Maps EU
061100xx Nav Maps
061D00xx Nav Maps
063000xx Nav Maps EU
063100xx Nav Maps
063D00xx Nav Maps
071000xx Nav Maps
073000xx Nav Maps EU
073D00xx Nav Maps
081000xx Nav Maps EU
081100xx Nav Maps
081400xx Nav Maps AGCC
081401xx Nav Maps AGCC, Turkey
081402xx Nav Maps AGCC, Israel
081403xx ??
081500xx Nav Maps South Africa
081600xx Nav Maps Australia, New Zealand
081700xx Nav Maps India
081800xx Nav Maps Mexico
081801xx Nav Maps Chile
081900xx Nav Maps Asia/Pacific
081D00xx Nav Maps
081D01xx ??
083000xx Nav Maps EU
083D00xx Nav Maps
091000xx Nav Maps EU
091100xx Nav Maps
091300xx ??
091400xx Nav Maps Turkey
091401xx Nav Maps AGCC, Turkey
091402xx Nav Maps AGCC, Israel
091403xx Nav Maps AGCC
091500xx Nav Maps South Africa
091600xx Nav Maps Australia, New Zealand
091700xx Nav Maps India
091800xx Nav Maps Argentina, Brazil, Mexico
091801xx Nav Maps Chile
091900xx Nav Maps Asia/Pacific
091A00xx ??
091D00xx Nav Maps
093000xx Nav Maps EU
093100xx Nav Maps
093D00xx Nav Maps