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Xhorse VVDI2 and VVDI Pro add BMW CAS4+ key

This is an instruction on how to program BMW CAS4+key, read ECU data and generate key using VVDI2 key programmer and VVDI Pro programmer


Main steps:

1. Read BMW CAS4+ ECU with VVDI Prog

2. Generate dealer key/Add key with VVDI2

3. Test new added CAS4+ key on Test Platform 


Step 1: Read BMW CAS4+5M48H ECU with VVDI Pro

This is a BMW CAS4+ immo box with 5M48H CPU



Open VVDI Pro software 

Select ECU type: BMW->5M48H 

Click “Connection diagram” to view wiring diagram 

Remove the component on CAS4+ circuit board 


Connect VVDI pro adapter cables with CAS4+


Check all cables/connectors are well connected/soldered 

Click “New”

Click “Read”

Device Initiating 


Wait the read data procedure process to 100%


Read ECU data completed 

Click “Save” and save data to desktop 


Step 2: Add BMW CAS4+ key with VVDI2

Connect VVDI 2 interface with PC 

Open VVDI2 software 

Select BMW model


VVDI 2 will auto detect the device 

Select “File make key”-> CAS4+-> 5M48H 


Click “Yes” to load file 

Open the CAS4+ ECU data file previously saved by VVDI Pro on desktop 

Double click the data file 

Select “Key3”, select “Generate Dealer Key”


Select “Have an ignition key…”


Insert BMW original key into VVDI II key hole 

Click “Next”

Insert the new key into the VVDI2 key hole 


Generate new key will take about 30 minutes 

Click “Yes”

Write key successfully, insert the key to the car key hole, do not need to write EEPROM data

New key has been added 


Step 3: Test new added CAS4+ key on Test Platform

Place newly added BMW CAS4+ key to the BMW CAS4 5M48H Test Platform 

LED2 light fast flashes indicating the newly added BMW CAS4+ key is working. 


Here is the extra adding CAS4+ key Chinese video instruction guide:

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