The Keydiy KD-X4 programmer has received a significant upgrade. Previously limited to changing IDs only on Keydiy’s own 5C/5D keys, the device can now also alter the ID of original factory VAG MQB49 5C and 5D keys. This opens up new possibilities for automotive locksmiths and key programmers.
Key Update Details & Pricing
- Cost per modification: 100 coins for changing an original key ID.
- SFD lock status: Not triggered – vehicle security remains intact.
Real-World Test: 2021 VW ID.3 with MQB49 5D Key
A real test was conducted on a 2021 VW ID.3 equipped with an MQB49 5D key. The factory key ID was successfully modified at a cost of 100 coins — the process ran smoothly without any issues.
During the test, a second-hand OEM board purchased from eBay was used. The case was carefully split open, then glued back together to achieve a like-new appearance. After rewriting the original board ID (costing 100 coins), the procedure completed successfully, and the final result was indistinguishable from an untouched factory key.
Comparison: Keydiy FGB Remote vs. Original Key Modification
It's worth noting that modifying a Keydiy FGB remote ID requires 0 coins, making it a more budget-friendly option for everyday use. For wireless remote generation, the KD-FGB remains the preferred choice. However, if you need to work with an original OEM key, keep in mind that without a KD solderless adapter, wired soldering on the original key is necessary.
Alternative Tools for OEM 5C/5D Key ID Modification
If you're exploring other options, both the CGDI K2Smart Key Tool and the Yanhua ACDP2 are expected to support OEM 5C/5D key ID modification as well, giving technicians multiple paths to achieve the same result.
Related Reading
For a more detailed walkthrough, refer to the full guide: Keydiy KD-X4 Change VAG MQB49 5C/5D Key ID Guide .
Recent Comment
Jack
May 3, 2026Very good!!