Xhorse MLB Tool Solder-free Adapter Wiring Diagram Guide

Xhorse MLB Tool is a professional solution designed to assist with key adding and programming for Audi, Porsche, Volkswagen, Lamborghini, Bentley, and other MLB platform vehicles. This tool has already helped technicians simplify complex key programming tasks and improve overall efficiency.

Now, with the launch of the Xhorse MLB Tool Solder-Free Adapter Kit, the workflow becomes even easier, safer, and more convenient.

What’s New with the MLB Solder-Free Adapter Kit?

The MLB Solder-Free Adapter Kit is designed to work seamlessly with the XHORSE MLB Tool, significantly reducing the need for traditional soldering during operation. By combining these two tools, technicians can:

1. Minimize the risk of PCB damage

2. Improve operational safety

3. Save time during installation and removal

4. Achieve a cleaner and more reliable working process

Important Note:

Although the adapter is solder-free, the removal of two capacitors is still required during the operation. Please follow the wiring diagrams carefully to ensure correct installation.

MLB Solder-Free Adapter Types & Wiring Diagrams

The MLB Solder-Free Adapter Kit is available in five different types, each designed to support specific vehicle models and PCB layouts. Refer to the corresponding wiring diagram for your application.

Type 1

Type 2

Type 3

Type 4

Type 6

Each adapter type is precisely engineered to ensure stable connections and accurate data communication during key programming.

Conclusion

The Xhorse MLB Tool, when paired with the MLB Solder-Free Adapter Kit, delivers a more efficient, professional, and user-friendly solution for MLB vehicle key programming. This combination is ideal for locksmiths and automotive technicians looking to improve productivity while reducing operational risk.

For more product details and purchasing information, please visit:

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Troubleshooting KTP Connection Issue with MLB Tool

Issue Description (Reported by UK Customer):

"Hi, I am having problems communicating KTP with the MLB Tool. It won’t connect. I tried exiting and reconnecting, but the issue remains."

Root Cause & Solution

This issue typically occurs after performing the hardware upgrade for MQB key data reading.

When replacing the original chip inside the MLB Tool with the one provided in the MQB adapter package, it is crucial to ensure proper soldering of the new chip.

Important:

The chip must be securely soldered onto the board, with plenty of solder applied to all legs/pins to ensure stable connectivity and function.

Poor soldering can lead to unstable contact, causing the KTP connection to fail or remain unrecognized by the MLB Tool.

Recommendation:

Open the MLB Tool and double-check the solder joints of the new chip.

If necessary, resolder all legs carefully to ensure a solid connection.

Once done correctly, the KTP communication should work as expected.

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Guide to Replacing the MLB Tool Chip for MQB Key Data Reading

To enable the MQB key data reading feature, you need to perform a hardware upgrade by replacing the internal chip of the Xhorse MLB Tool. Please follow the steps below carefully:

Step 1: Disassemble the Device

1. Remove the outer casing: Unscrew the four corner screws securing the device’s casing and carefully take off the cover.

2. Access the internal board: Locate and unscrew the screws holding the main board in place.

Step 2: Replace the Chip

1. Remove the existing chip: After exposing the front side of the board, gently detach the original chip using appropriate tools.

2. Install the enhanced chip: Insert the upgraded chip into the designated slot, ensuring proper alignment and secure contact.

Step 3: Reassemble the Device

1. Secure the board: Reattach the screws to fix the board back into its original position.

2. Close the casing: Replace the outer casing and tighten the four corner screws.

⚠️ Important Notes

During all future use, please ensure the device and the adapter are powered on.

For detailed function usage, please refer to the MQB Key Function Tutorial.

The hardware upgrade will be completed successfully by following these steps, enabling seamless operation of the enhanced MQB key data reading functionality.

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How to Replace Xhorse MLB Tool Chip for MQB Adapter Use?

Before using the MQB Adapter, it's necessary to upgrade the enhanced chip on the  Xhorse MLB Tool hardware. When switching back to MLB, there's NO need to replace the chip again. Once the modification is complete, the MLB WILL NOT lose its guarantee. 

Note that even a new MLB Tool will require this chip replacement. After these steps, you can collect MQB48 NEC35XX immobilizer key data with the MLB Tool + MQB48 Adapter.

The package should contain the following items:

XDMLB0GL MLB Tool

MQB Adapter

Enhanced Chip

Key Soldering Cable

How do I replace the Xhorse MLB Tool Enhanced Chip?

Please follow these steps to complete the hardware upgrade and ensure the normal use of the MQB key data reading feature.

1. Unscrew the four corner screws and remove the outer casing.

2. Unsrew the screws holding the board in place. Once you've accessed the front of the board, carefully remove the existing chip and replace it with the enhanced chip.

3. After replacing the chip, reassemble the device

Important:

Both the device and the adapter need to be powered on for future use.

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