Good news!!! Launch X431 has extended its BMW G-Chassis BDC2 key programming functionality to the X431 PAD Series (including PAD9 LINK, PAD VII, PAD V…). This powerful feature was previously exclusive to the X431 IMMO Series (IMMO Plus/Elite/PAD/Pro) and is now available across more devices. All require X-Prog3 & MCU3 Adapter to perform this function. No need license!
Here takes Launch X431 PAD9 LINK as an example to show how to add a BMW BDC2 key.
Preparation:
- X-431 PAD9 LINK
- X-431 X-Prog3
- X-431 MCU3 Adapter
- BMW G series BDC2 module
Main steps:
Step 1: Connection Setup
Step 2: Data Backup
Step 3: Module Preprocessing
Step 4: Key Reading
Step 5: Key Programming
Step 1: Connection Setup
Connect X-Prog3 in bench mode using MCU3 Adapter
Select: BMW → Main Functions → Anti-Theft Matching → BDC02 IMMO
Step 2: Data Backup
Perform encoding operation → Backup codes
Step 3: Module Preprocessing
Remove BDC2 module shell carefully
Select: Programming Operation → Read-out Preprocessing
Follow on-screen connection instructions:
Connect EEPROM Pin2 (verify no short circuit with Pin3)
Connect MCU Reset (ensure correct identification)
Use USB connection for stable communication
Verify continuity between pins (remove any unintended connections)
Power up MCU3 and connect MCU reset to X431 X-Prog3 (B8)
After connection, read the anti-theft data and upgrade ECU
Processing is successful
Restore coding data for the BDC
Step 4: Key Reading
Select: Key Operation → Read Original Vehicle Key
Place working key in X-Prog3 coil
Confirm successful data read
Step 5: Key Programming
Select: “Generate Dealer Key”
Choose unused key position
Place new key in X-Prog3 programmer
Complete learning process
Read also:
UK Professional OBD2 Tools Online Shop
