Problem:
I am trying to add a key for an Audi Q8 2019 MLB with Xhorse VVDI Key Tool Plus, but I am having issues.
“Error: Vehicle Communication Abnormal”.
Solution:
Open the bonnet.
Open hood turn on flashers and push start button a few times it should work after.
If the vehicle has SFD gateway, make sure hood is open as well and ignition is on of course. Try unlocking SFD before learning key in car.