Replacing a faulty window regulator on a Volkswagen can sometimes lead to issues with the window switches. This article discusses a common problem encountered after replacing a rear right window regulator on a VW, focusing on the importance of correct control module coding using VCDS (Vag-Com Diagnostic System) and addressing the “Control Module Incorrectly Coded” error. Understanding these procedures can save you time and frustration when working with Window Switches Vwvortex.
Understanding VW Window Switch Coding
Volkswagen vehicles utilize a centralized control module system to manage various functions, including power windows. Each door module contains specific coding that dictates the behavior of the corresponding window switch. When replacing a module, it’s crucial to ensure the new module is coded correctly to match the vehicle’s configuration. Failure to do so can result in erratic window operation, stress on the regulator mechanism, and diagnostic trouble codes (DTCs).
Case Study: Rear Right Window Regulator Replacement
In this specific case, after replacing the rear right window regulator, the newly installed module had a different coding (0008336) than the original module (0001168). This coding mismatch triggered a fault code: 01044 – Control Module Incorrectly Coded. This scenario is frequently discussed on vwvortex forums, highlighting the importance of proper coding.
The image above shows the VCDS coding screen for the door module. This interface allows technicians to access and modify the module’s coding.
Correcting the Coding with VCDS
To resolve the issue, the following steps were taken using VCDS:
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Auto-Scan: Perform a full vehicle scan using VCDS to identify any fault codes and to retrieve the original coding value from the faulty module before replacement. This scan provides a comprehensive overview of the vehicle’s systems and pinpoints any malfunctions.
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Coding Procedure: Access the specific control module for the affected door (Address 72: Door, Rear Right in this case). Navigate to the “07-Coding” section within the module.
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Entering the Correct Coding: In the Software Coding field, enter the original coding value (0001168) obtained from the Auto-Scan of the faulty module. Click “Do It!” to apply the changes.
This image displays the detailed coding information for the replaced module, highlighting the importance of matching the original coding.
- Window Calibration: After applying the correct coding, it’s essential to calibrate the window. Raise the window fully, then activate the switch again in the up direction and hold for two seconds. This process sets the window’s upper limit.
Importance of Pre-Replacement Auto-Scan
This case underscores the critical importance of performing a pre-replacement Auto-Scan using VCDS. Retrieving the original coding value before removing the old module ensures you have the necessary information to code the new module correctly. This proactive step prevents potential complications and ensures proper window function. Skipping this step can lead to troubleshooting headaches and unnecessary time spent diagnosing coding issues, a topic often discussed on vwvortex.
Conclusion
Correctly coding control modules is paramount when replacing components like window regulators in Volkswagen vehicles. Utilizing VCDS and adhering to proper coding procedures prevents malfunctions and ensures seamless operation of the window switches. Always perform a pre-replacement Auto-Scan to obtain the original coding value, ensuring a smooth and error-free installation. For further assistance and discussions on this and other VW related topics, consult the vwvortex community forums.
