Audi A4 2013 5th generation immobilizer BCM2 all keys lost programming successfully done by Xhorse VVDI Key tool Plus pad.
Step 1. Read IMMO Data
IMMO programming->Europe->Audi->Select by Type->5th Generation Immobilizer System
Press Start programming
Select Read BCM data->Read by OBDII-> Read BCM2 data (OBDII)
Insert working key into ignition and switch on before continue
If working key is already in car, take out and insert in again (also switch START/STOP button).
If lost all working key, open the headlight, and step on the bake before continue.
Press OK
Read success
Step 2: Make Dealer Key
Select A4L, Q5 add key or lost all key
Insert working key into ignition and switch on before continue
If lost all working key, insert dealer key into ignition, open the headlight and step on brake before continue
Learn key success
Test remote control. It works.
Done.