Keydiy KD-X4 BMW G series BDC03 immobilizer system key programming function is ready now. Here we will show how to add a spare BMW BDC3 key using KD-X4 step by step.
No need access to the vehicle, just disassemble and read data from original key.
Tools required:
BMW BDC3 software license (it’s free if you already have G function license activation. If you don’t have G license, it takes 150USD or 5000 KD coins to activate the license)
Keydiy KD FGB23 (G chassis) or FGB57 (U Chassis) smart key
Original G series BDC3 key (This function requires an original factory ignition key.)
Mobile phone or tablet
OTG adapter
Procedure:
Model example: 2023 BMW G series X3 BDC03
Connect KD-X4 with tablet/mobile phone via OTG adapter. Pair device with phone via Bluetooth.
Run KD App.
Go to IMMO Programming Function- Immo Programming- G/U Chassis BDC3/BCP anti-theft system.
Start execution.
Check the wiring diagram.
KD-X4 App shows 2 wiring diagrams for G chassis and U chassis BDC3.
Zoom in the corresponding wiring diagram. Here it’s G chassis.
Solder 4 wires to the original key according to the diagram.
Select Add key function.
Current functionality supports adding key only for select models. Keys manufactured between 2020-2024 with “Hungary” marked in the upper-right corner after removing the key cap exhibit higher success rates.
Follow instructions to add (clone) key.
Place the original car key into the induction coil to read data.
Start identifying the original car key.
Read NCF29Ax chip data.
Reading data.
Save original key data.
Remove original key and place the KD-FGB smart key remote into the induction coil to generate remote.
Load original key data and generate remote.
Generate remote successfully. Clone key ok.
After cloning key successfully, test the new key.
NOTE:
Avoid using old and new keys together to prevent signal interference.