How to read BMW CAS4 1N35H ISN code using xhorse vvdi2 programmer without key.
You also need a CAS4 bench test platform and 13V power supply.
Run VVDI2 BMW software
Select CAS3/CAS4+ Type and get key info
Select OBD read D/P and exchange CAS4
Read CAS4 immo data
Turn on ignition switch on the test platform
You will get CAS4 immo data
You will see ECU ISN code.