Confirmed! Xhorse vvdi2 can work for 2013 Passat slot key AKL.
By dump! Not through the obd!
Q: Do you need a special cable for the dump?
A: Vvdi prog or other eeprom programmer
Q: When you select the car on vvdi2 what the tool ask for ?
A: I havnt been out to the car yet, just asking for advice…I have AR32 and Tango also.
The tango and AR32 will work. It is best done out of circuit.
You can add the key by tango too i think. The eeprom would be 8 legs eeprom not difficult to read .
Q: Can you share details with us if you have a good success?
A: I tried to do one with vvdi 2 last year and i could not figure it out. I do us the prog to read and write these.