Here is the Chinese demo guide on programming MQB key by xhorse vvdi prog+ vvdi2.
Add key and all keys lost all require to read immo data with vvdi prog first.
AKL also requires sync data from third party.
NOTE: You must have vvdi prog to read immo data and upload to vvdi2.
You should remove the dashboard to read immo data with vvdi prog/key tool plus no matter add key or all keys lost.
Unscrew all screws and disassemble dashboard
check wiring diagram here
one is pin lift method the other is track cut method – might only be for that particular dashboard, probably not all will have track cut method.
Method 1: Lift PIN diagram
following witing diagram to connect dash with vvdi prog via mcu v3 cable
Method 2: Cut PIN diagram
Method 2 requires opening the reverse side of the circuit board.
Connect the junction and reinstall dashboard. Remove to step 2.
Connect vvdi2 with laptop. Make sure network connection is enabled.
Run VVDI2 software
Select Key Learning-> MQB platform immobilizer->Dashboard- MQB48 VDO/JCI-NEC35xx LOCK
VVDI2 will decrypt immo data online, calculating online in process.
Save decrypted immo data
Now you can add key with the immo data.
For all keys lost, contact 3rd party to get sync data as well.
Here is the Chinese reference video:
Here is the procedure with VVDI key tool plus