NCS Expert: How To Modify NETTODAT Files

NCS Expert: How To Modify NETTODAT Files

By in NCS Expert Software


For some features, such as controlling how long you have to press the lock button down on the key fob to fold in the car’s mirrors, require you to modify the NETTODAT.TRC file. 



To keep this tutorial as short as possible, I will not be going into some of the details for NCS Expert since most were explained in the Getting Started guide. So if you are new to coding BMW E90s, be sure to follow the Getting Started guide first by clicking the following button: 

Getting Started Guide

Let’s Get Started

  1. In NCS Expert, load the Expertmode profile
  2. Press F1, and then press F3.  For the ECU, choose the CAS ECU.
  3. Press F6, and then press F4 to choose which module you are wanting to change the NETTODAT file for and press the OK button.
  4. Press F4 to read the ECU. When you read the ECU, a new NETTODAT.TRC file (which you should backup someplace on your computer) will be created in the NCS Expert WORK folder. A pop-up window titled NETTODAT.TRC will also appear. Exit out of that window.
  5. Open the NETTODAT.TRC file located in the NCS Expert folder in  Notepad++ or Notepad. 
  6. Use the search feature in Notepad++ or Notepad to find the line you need to edit.
  7. When done making the changes, save the file as NETTODAT.MAN. Notice the .MAN extension at the end, instead of .TRC.
  8. Just so we do not screw up anything in the following steps, close out of NCS Expert and re-open it. This time load the FSW PSW MAN profile instead of the Expertmode profile. 
  9. Repeat steps 2-3.
  10. Press F5 or click the basic functions button and select “coapiCodeSgByNettoData” in the pop-up screen and then press the OK button. Another pop-up screen will appear, and for the field Nettodatenliste, type in NETTODAT.MAN. Next press the OK button on the pop-up window.
  11. After pressing the OK button in the pop-up window above, NCS Expert will take the values in the NETTODAT.MAN file located in your NCS Expert WORK folder, and code them to your car. 
  12. You can now close NCS Expert.  


  1. I don’t understand the BMW car series very well can anyone lay it out on what cars are in each series

    Shay H

    June 10, 2014

  2. where can I find documentation on what I can edit here? I specifically want to change the amount of time required to fold mirrors.


    January 18, 2015

  3. When I load INPA, I see the Battery and Ignition circles filled after turning on the ignition. But I have nothing populated in the Function keys – They are all blank. It seems I am missing a file?


    December 24, 2015

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