Monday, 3 November 2025

Guide: How to Add a Key to BMW BDC3 Using Keydiy KD-MAX

This guide provides step-by-step instructions for cloning a smart key for the BMW BDC3 using the Keydiy KD-MAX Tool.


Required Tools:

Keydiy KD-MAX

Unlocking cable

BDC03 solder-free dismantling clip

KD FGB57 Board

Original key

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Step 1: Initial Setup

Power on the KD-MAX device.

Navigate to:

[Remote Function] → [Smart Key Clone] → [BMW BDC3 Key Clone]

Select [Connection diagram] to view the correct wiring setup for the KD BDC03 solder-free adapter clip.

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Step 2: Prepare the Original Key

Disassemble the original car key.

Secure the key using the BDC03 clip.

Connect the clip to the KD-MAX device.

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Step 3: Read Chip Data

From the main menu, select [BMW BDC3 Key Clone] again.

Choose [Smart Key Clone] → [Read Chip Data] → [Start Execution]

Wait for the data to be read.

File saved successfully!

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Step 4: Generate New Key Data

Remove the original car remote and place the KD FGB57 Board on the KD-MAX induction area.

Select [KD-FGB Remote].

The system will begin generating data.

Generation successful!

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Step 5: Final Assembly

Reassemble the new key into its housing.

The key is now ready for use with the vehicle.


Additional Resources:

For a visual demonstration, watch the tutorial video:


For more tools and accessories, visit:

www.obd2shop.co.uk


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