Description
KD Solder-Free Adapter BMW BDC3 2020-2024 G Series
The KEYDIY BDC3 no welding clip is a solution for adding keys to BDC3 using the original key PCB board in BMW G series models (2020-2024). It is designed for KEYDIY and other devices and allows key addition through precise BDM contacts without soldering.
This is a clip. It is for BDC3 only and provides a stable connection to the original key electronic board.
Activation and licensing (KEYDIY):
To activate the BMW FEM/BDC1/2/3 software for your KD-X4 or KD-Max, you must use 5000 KD coins or pay 100 dollars in their app. (If using other tools, follow their activation instructions/pricing)
Functions and features
- Key addition: No soldering using a BDM clip on the original key PCB board.
- Accuracy and repeatability: Positioning pins ensure stable and reliable contact with the pads.
- Tool compatibility: KD-X4 or KD-MAX and more
Not currently supported: All keys lost (AKL) key recovery.
Vehicle coverage (BDC3)
Note: Coverage applies to some BDC3 models only, with emphasis on keys manufactured in Hungary. Actual support depends on the BDC3 hardware in the vehicle. Always confirm the module is BDC3 and that the chip is 2951/2953B before purchase or use.
| Model (example) | Chassis | Estimated years | Notes |
|---|---|---|---|
| 3 Series (some versions) | G20 / G21 | 2020-2024 | Depends on BDC3 hardware |
| 4 Series (some versions) | G22 / G23 / G26 | 2020-2024 | Preference for Hungary made BDC3 |
| 5 Series LCI (some versions) | G30 / G31 | 2020-2023 | Verify BDC3 by label or part number |
| X3 / X4 (some versions) | G01 / G02 | 2020-2024 | Hardware dependent |
The table above is for guidance only. Always confirm BDC3 by the module label/remote chip and vehicle hardware.
Technical specifications
| Item | Specification |
|---|---|
| Structure | BDM clip without soldering (not a full adapter board like for BDC2) |
| Power supply | Connects to KEYDIY remote renewal cables or similar. |
| Supported tools | KEYDIY X4, KEYDIY MAX and others |
| Function | Key addition |
| Usable Key types | OEM BDC2/BDC3 or specialized universal/aftermarket keys. |
| Chips | 2951, 2953B |
Important notes
- Requires KEYDIY or similar tool's software licensing or activation.
- Supports some BDC3 vehicles only, mainly Hungary manufactured remotes. Check that the vehicle has BDC3 and check the key type before use.

