This is a guide of how to easily read / write / save BMW CAS4 with highly secured MCU MC9S12XEP100 Masked as 5M48H inside via Vvdi Prog programmer.
Open VVDI Prog software, select type, manufacture and model as MC9S12XEP100)
Click “Wiring Diagram”
Maximize wiring diagram: right click and select “zoom window”, then pull down window.
Follow the wiring diagram to connect CAS to the VVDI Programmer.
Start to connect the cable.
The left zone is done, next is to do the right zone.
In this wiring diagram, it only need to remove one 0 ohm resistor to read out data, but one CAS ECU structure is different another one, some needs remove more electronic parts; we will show how to do in the other videos.
Next is to remove this 0 ohm resistor.
Wiring is done, 0 ohm resistor is removed
Plug adapter into VVDI Pro.
Close wiring diagram.
Select “New” – ” Read”
You see it is reading data very fast.
Reading data successfully, click “Save”
Next is to check data.
Open the data, drag the mouse to check, okay, data is all read out, close it.
Attach photos of the reading procedure