Test report:
Golf VII MQB 2016 add key successfully by Autel IM508+xp400
Blade half smart key. Key with blade. Ignition turned by key blade.
Part number of original key : 5G6959752AB
Read immo success
Online calculation seems back. Calculating time about 3min
Make dealer key success
Adapt new key failed - because I had no battery inside key.
I put battery inside and learning ok.
Whole procedure about 12min.
Used Chinese aftermarket key. xhorse key doesn't work. Cannot do dealer key. It was aftermarket key. This one was bought from aliexpress, but it is a lot of sellers on web.
IM508+ xp200 can do this too. same AKL.