VCDS programming, also known as VAG-COM, allows you to customize various settings in your car’s control modules. This guide explains how to use VCDS for recoding, long coding, and other advanced functions.
Understanding VCDS Recoding
Recoding changes control module options. Before you begin, understand these important points:
- Login: Some modules require a valid login before recoding.
- Workshop Code (WSC): VCDS allows you to leave the WSC unchanged or enter a custom code, unlike some other diagnostic tools.
- Importer Number: This is relevant for controllers using KWP-2000 and is usually unchanged unless configured in VCDS options.
- Coding Chart Data: Label files in VCDS can contain up to 20 lines of coding chart data, displayed in a helpful balloon on the coding screen.
Airbag Coding with VCDS
When coding new airbag modules in many VW models, VCDS can suggest a coding value based on the module’s index number. This feature requires a professional-grade VCDS (HEX) interface.
Disclaimer: While VCDS suggestions are generally reliable, accuracy isn’t guaranteed. Incorrect coding will be rejected by the module.
To use the Coding Helper:
- Click the “[Coding Helper]” button.
- Follow the on-screen instructions to find the airbag controller’s index number.
A valid index number and corresponding label file data will populate the Soft Coding field with the suggested coding. Refer to the Airbag Coding page for detailed information.
Coding Slave Modules with VCDS
Modern cars often have codeable “slave” modules. VCDS displays a dropdown list of these modules for selection:
Battery Coding Assistant in VCDS
For vehicles requiring battery coding in the 61-Battery Regulation module, VCDS provides a Battery Coding Assistant. Enter the 10-digit serial number, omitting any preceding vendor codes.
Accessing Installation Lists in VCDS
Some vehicles, like the Audi B8 platform, require accessing the Gateway Installation List through the Open Controller screen for the CAN Gateway, not Long Coding. This functionality is available in all supporting Gateways. See the Installation List Page for more details.
VCDS Long Coding Explained
Long Coding handles complex configurations in newer CAN-based systems. It involves hexadecimal data strings up to 255 bytes long. VCDS supports copy and paste functionality and a Long Coding Helper for easier management.
Utilizing the Long Coding Helper in VCDS
The Long Coding Helper, often used with applications like LCode.exe, simplifies the process:
- Click on Byte numbers in row 3 to view selectable options.
- Check or uncheck boxes for desired results.
- Use dropdown menus for complex multi-bit operations.
Experimental Coding in VCDS
To address the increasing complexity of modern vehicles, VCDS offers access to raw, unreviewed “Experimental” coding data for newer modules (HEX-NET and HEX-V2 interfaces). VCDS will issue a warning before utilizing this data, which is presented in the Long Coding Helper with a yellow background.
To apply changes: Close the Long Coding Helper and click the “[Do It!]” button in the Coding screen. A soft reset option can also be selected to reboot the module after coding. The “[Cancel]” button allows exiting without saving changes. An uninitialized control module warning may appear if certain fields are zeroed out. VCDS can automatically populate these fields if necessary.
Conclusion
VCDS programming provides extensive control over vehicle customization. Understanding the various functions and tools within VCDS enables users to safely and effectively modify their car’s settings. Remember to consult relevant documentation and proceed cautiously when making changes.
