Have Audi A4 B7 cluster RB8 to make key. no problem with Xhorse vvdi2..If u want to be on safe side save eeprom first.
I’ll explain how make new key using Xhorse VVDI2:
option: Key learn in menu then cluster instrument A4 rb8
And follow procedure
Read eeprom and save then read immo data and save them as text example vin , cs , pin code , ……..
Then precode transponder with cs and then learn it to car using pin code
That way in case something went wrong you be safe
I prepared key and add key option. Not use pin code.
Key learning and car start but not have a remote control.
Maybe wrong key
Fcc is the same of both key ?
You should consider that remote controls must be programmed separately from transponder with diagnostic device. but if its electronic it should work straight ahead.