Comprehensive Guide to Reading VAG MQB49 5C/5D Keys with Xhorse Multi Prog

The automotive industry is undergoing a rapid transformation, especially with the advent of advanced vehicle key technology. The Xhorse Multi Prog tool has emerged as a pivotal device for automotive locksmiths and technicians, particularly in reading VAG MQB49 5C and 5D keys. This guide will delve into the functionality of the Multi Prog, the necessary hardware modifications, troubleshooting tips, and more!

What is Xhorse Multi Prog?

The Xhorse Multi Prog is an innovative programming tool designed for automotive key reading and ECU programming. Its versatility allows it to handle various types of vehicle keys and efficiently manage key programming tasks. Recently, it has included functionalities for VAG MQB49 5C and 5D keys, enhancing its utility for automotive professionals.

How to Access Key Reading Features

As of now, the Xhorse Multi Prog key reading function for VAG MQB49 5C and 5D keys is still in the testing phase. However, to access these testing features, follow these steps below:

• Open the Multi Prog software.
• Navigate to: Help -> Test 180.

Required Hardware Modifications

To successfully read data from MQB49 5C/5D keys, specific modifications to your MCU adapter are essential. The following steps outline the modifications:

1. Modify MCU Adapter

Make the following modifications to your MCU adapter:

• Modify two black wires: GND Short and GND Long.

2. Wiring Reference

Consult the Multi Prog wiring diagrams for precise instructions on connecting to MQB49 5C/5D keys. These diagrams provide a visual aid to ensure correct connections.

Troubleshooting Tips

If you experience any failures while attempting to read the key data, consider implementing these troubleshooting suggestions:

• Attach a 100-ohm resistor in series with the CLK line. This may resolve connectivity issues during the reading process.

Limitations of Xhorse Key Tool MIDI

While the Xhorse Multi Prog is highly capable, it is essential to note that the Xhorse Key Tool MIDI does not currently support reading data from disassembled original MQB49 5C and 5D keys. If you attempt to read an original VAG MQB49 5C key after disassembly using the Key Tool MIDI, you might encounter the message: “The current device does not support this function.”

In such cases, it is recommended to utilize a VVDI Programmer (such as Multi-Prog) to initially read the key data, which can then be processed by your Key Tool.

Conclusion

The Xhorse Multi Prog continues to evolve, aiming to accommodate the latest advancements in automotive key technology. For locksmiths and technicians, staying informed of these functionalities is crucial for maintaining their competitive edge. With the right hardware modifications and troubleshooting tips, you can leverage the Multi Prog to efficiently read VAG MQB49 5C and 5D keys. Make sure to follow our guide and stay tuned for further updates on this exciting feature!

For further information and to explore more tools from Xhorse, visit VXDAS.com.