When replacing control modules in newer Volkswagen and Audi vehicles, you might encounter coding rejection issues. This often stems from pre-existing Workshop Code (WSC) and Importer Number values stored in the new module. This article explains the importance of these values, particularly the Vcds Importer Number, and how to correctly code replacement modules using VCDS software.
What is a VCDS Importer Number?
Every VW/Audi dealer has a unique five-digit Workshop Code (WSC) and a three-digit Importer Number. These identifiers are embedded in the control modules during coding procedures using factory scan tools. The VCDS importer number, specifically, represents the region or country where the vehicle was originally intended for sale. In the US market, this number is typically 444.
When using VCDS software for coding, if a non-default WSC and Importer Number are detected in the module, VCDS will resubmit these values during the coding process. If the module was originally coded with a different WSC and Importer Number, it might reject the new coding attempt, even if the coding value itself is correct. This is a security measure to prevent unauthorized modifications.
Resolving Coding Rejection Issues with VCDS
A common scenario involves replacing a module, such as the Steering Wheel Electronics (J524), and encountering coding rejection due to mismatched WSC/Importer values. For instance, a new J524 module might come with a default soft coding of 2E10, which may be incorrect for the specific vehicle. Attempting to change the coding to the correct value (e.g., 0400) might fail with an error.
To resolve this, you need to ensure the correct WSC and VCDS importer number are being used during the coding process. Within the VCDS software, navigate to Options -> User Interface and Identification. Here, you can input the correct WSC for the dealer or use a valid alternative. Remember, the US importer number is generally 444. The Equipment Number is less critical and can often be set to a default value like 00215.
By providing the correct WSC and VCDS importer number, the module will accept the new coding, allowing you to successfully complete the replacement and clear any related fault codes.
Finding Your Dealer’s Workshop Code
You can usually find your local dealer’s WSC on the dealer sticker affixed to new cars. The WSC is a six-digit number; remove the first digit to obtain the five-digit code used by scan tools.
Dealer Sticker Example
In the example above, the WSC is 403099. Removing the leading 4 results in the five-digit WSC 03099. If you’re unable to locate a dealer sticker, using your ZIP code (in the US) as the WSC often works.
Conclusion
Understanding the role of the VCDS importer number and Workshop Code is crucial for successfully coding replacement modules in VW/Audi vehicles. By ensuring these values are correctly set in the VCDS software, you can avoid coding rejections and ensure the proper functioning of the new module. This knowledge empowers you to perform more complex diagnostics and repairs with confidence.
