2013 528i added another smart key within 15 min by OBD, easy as 1,2,3….

Using vvdi2 version 6.6.5

I been using VVDI2 for years & haven’t bricked a CAS yet so when they stated they can do CAS4 by OBD, I was ready to do it plus been doing CAS4’s for a while just not by OBD

Key written successfully

Go to the car with the key

No need write back to EEPROM

(Credits to Kinny Long)