Introduction to function coding on BMW F2x with E-SYS
This comprehensive tutorial guides you through the steps required to code your BMW F2x with E-SYS, software that allows you to modify various parameters of your vehicle. While the focus is on the F2x, the steps are similar for other BMW models compatible with E-SYS.
Warning: Coding directly modifies your vehicle's programming. Follow the instructions carefully and be aware of the potential risks. Neither BMW nor the author is responsible for any problems that may arise.
Prerequisites
Before you begin, make sure you have the following items:
- Computer: PC or MAC with E-SYS installed.
- Cable: OBD II cable compatible with your BMW F2x.
- Software: E-SYS and PSdZData versions compatible with your vehicle.
- List of options: List of codeable options for your F2x model (consult specialized forums or E-SYS documentation).
- List of proven codings: List of tested and approved codings.
- Knowledge: Basic knowledge of computer science and automotive electronics is recommended.
Preliminary checks
- Connecting your vehicle: Connect the OBD II cable to the OBD II port in your vehicle (under the footrest) and the other end to the Ethernet port on your computer. Turn the ignition on without starting the engine. Windows should report "Limited or no connectivity." Run "ZGW_SEARCH" in "EDIABAS\Hardware\ENET." If your computer and vehicle are able to communicate, you should see a message confirming the connection.
- E-SYS Version: Start E-SYS, connect to your vehicle, and select "VCM" from the left-hand menu. Click "Read" in the "VCM Master" tab. Note the "I-Step (current)" value. If the value is less than F020-13-03-501, you will need at least E-SYS 3.22.5 with PSdZData 49.1.
Coding with E-SYS
Example: Activating the Start&Stop memory
This example illustrates the coding of a simple function. The coding of other functions may differ.
- Saving current settings: In E-SYS, select "Coding" and then "Read (VCM)" in "SVT Actual". Right-click on each line marked with a "•" and select "Read Coding Data" to save the current state of the modules. Do not close E-SYS. Copy the "CAF" directory (C:\ESysData\CAF) to a safe location to keep a backup of your original settings.
- Selecting the module to code: In "FEM_BODY", locate the "CAFD_00" directory. Right-click on the "CAFD_00" file and select "Edit FDL".
- Modifying settings: Locate the setting you want to change. In this example, search for "TCM_MSA_MEMORY". Right-click on "nicht aktiv" and select "Edit". Select "aktiv". Save the changes and close the window.
- Activating the changes: In "Vehicle Order", click "Read". Right-click the "FA" folder and select "Activate FA". Verify that there are no errors. Click "Code FDL" to start the coding process. Wait for the process to complete.
- Vehicle disconnection: Once coding is complete, disconnect the vehicle by clicking the "Disconnect" button in E-SYS.
Remarks
- Be careful when changing the settings. Errors can cause vehicle malfunctions.
- For more information on coding specific to your F2x, consult specialist forums and the E-SYS documentation.
- Feel free to ask questions, share your experiences or express your dissatisfaction in the comments.
