How to Change VAG MQB49 5C/5D Key ID Using Keydiy KD-X4: A Step-by-Step Guide

If you are an automotive technician or a DIY enthusiast looking to change the Key ID for your VAG MQB49 5C/5D vehicle using the Keydiy KD-X4 programmer, this guide is for you. We will walk you through the steps necessary to extract the original key's data and transfer it to a new Keydiy remote.

Step 1: Extract Information from the Original Key

The first step involves disassembling the original factory key to access its internal data and generate a service code. Using the Keydiy interface available on uobdii.com, you will be presented with two Key IDs. Place the original key on the KD-X4’s induction coil to identify which of the two IDs corresponds to the factory key.

Step 2: Set Up the Keydiy Remote

It is important to note that ID modification is exclusive to Keydiy remotes. On the Keydiy programmer, navigate through the menu, select the relevant service code, and choose the FGB remote option to create a dealer key.

Step 3: Adjust the Key ID on the New Remote

Next, access the Chip function and select the Automation detection clone option. Position the Keydiy FGB remote on the Keydiy KD-X4’s induction coil and press the "Start identifying" button. This will allow the device to recognize the chip type and its existing ID.

After the chip type is recognized, choose the Chip editing option. Edit the ID displayed on the screen to match the original key ID that you obtained in Step 1. Finally, write the modified ID to the chip. A confirmation message will indicate that the process was successful.

Step 4: Confirm the Update

To ensure that the Key ID has been accurately changed, perform another identification of the remote. The information should now reflect that the Key ID has been altered to match the original.

Step 5: Finalize with Vehicle Programming

Once the Key ID has been synchronized with the original system, you can proceed to teach the new key to the vehicle by following the standard programming procedure. This step is crucial as it ensures that your new Keydiy remote will function seamlessly with your VAG MQB49 5C/5D vehicle.

Conclusion

Changing the Key ID for your VAG MQB49 5C/5D using the Keydiy KD-X4 programmer is a straightforward process if you follow the steps outlined above. Always ensure you work carefully to avoid damaging the components, and refer to the user manual of your Keydiy device for additional guidance. For more information and tools, visit uobdii.com.