The VCDS (VAG-COM Diagnostic System) is a powerful tool used for diagnosing and coding control modules in Volkswagen, Audi, Seat, and Skoda vehicles. A crucial aspect of using VCDS for coding is understanding the role of the Vcds Importer Number and Workshop Code (WSC). This article will explain why these values are important and how to handle potential issues related to them, particularly when replacing control modules.
A recent case involving a 2015 GTI highlights the significance of the VCDS importer number. After replacing the Steering Wheel Electronics (J524) module, the new module came with an incorrect soft coding value. Attempts to apply the correct coding (0400) were rejected by the module. This rejection often stems from a mismatch between the WSC and VCDS importer number stored in the new module and the values being submitted by the VCDS software.
Every VW/Audi dealership has a unique five-digit WSC. Factory scan tools at dealerships are pre-configured with the dealer’s WSC and corresponding VCDS importer number. When a module is coded using a factory tool, these values are recorded within the module. While these values don’t directly impact the module’s functionality, they are required during the soft coding process.
VCDS software includes a “stealth mode.” If it detects non-default values for WSC and VCDS importer number (other than 00000 and 000, respectively), it resubmits these values during coding. If default values are present, VCDS suggests using 12345 for the WSC and 123 for the importer.
The problem arises when a replacement module already contains a WSC and VCDS importer number. If VCDS attempts to resubmit these existing values during coding, the module might reject the coding request, even if the coding itself is correct. This is precisely what happened in the GTI case. The new J524 module had pre-existing WSC and VCDS importer number values, causing the coding rejection.
The solution lies in correctly configuring the VCDS software. Within the Options menu, under User Interface and Identification, users can input the correct WSC and VCDS importer number. In the US, the VCDS importer number is typically 444. For the WSC, using the dealer’s WSC where the vehicle was purchased or serviced is recommended.
The dealer’s WSC can often be found on the dealer sticker affixed to new cars. It’s usually a six-digit number; remove the first digit to obtain the five-digit WSC used in VCDS.
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By entering the correct WSC and VCDS importer number in the VCDS software, the coding process can proceed successfully. In the GTI example, after entering the correct values, the J524 module accepted the 0400 coding without issue.
In summary, understanding the role of the WSC and VCDS importer number is essential for successful module coding with VCDS. When encountering coding rejections with replacement modules, ensure that the VCDS software is configured with the appropriate values to avoid compatibility issues. This seemingly minor detail can save significant time and frustration during vehicle diagnostics and repairs.
