How to copy BMW G series BDC3 key using APP2 Appro2?
Check the detailed operation guide below.
Preparation:
- BMW G chassis BDC3 module
- Original key
- New blank key need to be programmed
- USB Cable, Key Programming Cable
- APPRO2 KEY PROGRAMMER with authorization number [FN0051]
- Appro2 BMW BDC3 BCP Adapter
Only copy BDC3 key made in Hungary. If the original car key is locked (made in Mexico), and it cannot be copied.
Step-by-step guide:
Run APPRO2 software
Select BMW-> BDC2/BDC3/BCP Keys Copy [0051]
Click "Diagram" to check the wiring diagrams
Working key diagrams
New key diagrams
Select the key type- G Series Key
Click "READ WORKING KEY"
Save the key file after reading
When it asks "Do you want to write new key now?" click "No"
Then click "WRITE NEW KEY" option
ATTENTION:
This function is KEY CLONE, the new clone KEY will use the same position of the original key, so don’t put the new key and the original key together in car (you can move out the battery).
Click "OK" and load the working key IMMO file
Check the IMMO information and click "OK" to write the new key
Connect the new key by diagram, and click "OK" to continue
Wait a while until the original key file is written to the new key successfully by APPRO2
Done!
Read also:
http://blog.obdexpress.co.uk/2025/09/05/which-tool-add-key-to-bmw-g-series-bdc3-immo-system/
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