BMW coding using NCS Expert and NCS Dummy

Introduction

In this tutorial, we will guide you through the process of coding comfort access features for your BMW using NCS Expert and NCS Dummy. By the end of this tutorial, you will be able to unlock and access your car without needing to press the key fob button, enhancing convenience and usability.

Step 1: Setting Up Your Environment

Before you begin coding, ensure you have the necessary software and tools ready.

• Install NCS Expert on your computer.
• Download NCS Dummy for easier coding.
• Connect your BMW to your computer using a compatible OBD-II cable.
• Ensure your car's battery is fully charged to avoid interruptions during the coding process.

Step 2: Launch NCS Expert

Once your environment is set up, follow these steps:

• Open NCS Expert on your computer.
• Select the “Profile” you intend to use for coding (e.g., “Expert” mode for advanced users).
• Click on “Connect” to establish a connection with your vehicle.

Step 3: Read the Vehicle's ECU

To access the coding options, you need to read the ECU data.

• Navigate to “VIN/ZCS/FA” and select “Read ECU.”
• Choose the appropriate ECU you want to modify (e.g., “CAS” for comfort access).
• Click on “Execute” to read the current coding settings.

Step 4: Modify the Coding Settings

After reading the ECU, you can modify the settings to enable comfort access.

• Open NCS Dummy to simplify the coding process.
• Import the file you just read from the ECU into NCS Dummy.
• Look for the comfort access settings, which may be labeled as “Comfort Access” or similar.
• Change the relevant parameters to enable the feature (e.g., set “Active” or “Enabled”).

Step 5: Save and Write the New Settings

Once you have adjusted the settings, it’s time to save and write them back to the ECU.

• Return to NCS Expert.
• Click on “Coding” and select the ECU you modified.
• Choose “Write” to upload the new settings to the ECU.
• Confirm that you want to proceed with the writing process.

Step 6: Test the Comfort Access Feature

After writing the new settings, it’s essential to test if the feature works as intended.

• Exit your vehicle and ensure the key fob is nearby.
• Approach the car and test if it unlocks automatically without pressing the key fob button.
• If it works, you have successfully coded the comfort access feature!

Conclusion

By following these steps, you have successfully used NCS Expert and NCS Dummy to enable comfort access in your BMW. This upgrade allows for a more convenient entry into your vehicle and enhances your overall driving experience. Remember to always back up your ECU settings before making changes and consult online forums for additional tips and troubleshooting help if needed. Enjoy your newly coded features!