Permanently disabling the start-stop (SS) function in your Audi with VCDS is achievable through coding modifications. This guide outlines two common methods: the Temperature Method and the Voltage Method. While these tweaks offer a solution to a sometimes frustrating feature, consider potential legal and environmental implications before proceeding.
Understanding the Two Methods: Temperature vs. Voltage
Two distinct VCDS coding modifications can disable the start-stop system in various Audi models:
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Temperature Method: This method manipulates the temperature thresholds that trigger the start-stop system. By setting these thresholds outside of normal operating temperatures, the system effectively remains inactive. This method has been reported to work effectively on earlier model years.
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Voltage Method: This method adjusts the minimum voltage required to engage the start-stop system. By raising the voltage threshold above the typical operating voltage, the system remains off. This method has been reported as more effective on later model years.
Note: The availability of each method depends on your specific Audi model and year. Accessing the necessary adaptation channels with VCDS will confirm which method is applicable to your vehicle.
Disabling Start-Stop with the Temperature Method
This method involves modifying two adaptation channels within the CAN Gateway module.
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Access CAN Gateway: Connect your VCDS interface and access module 19 – CAN Gateway.
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Open Adaptation: Navigate to the “Adaptation – 10” function.
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Modify Minimum Temperature: Locate the adaptation channel “(1)-Start/Stopp Auntemperaturvorgabe-Minimaltemperatur”. Change the stored value from the default -50.0 to 50. Click “Do it!” and then “Add to Log” to save the change.
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Modify Maximum Temperature: Locate the adaptation channel “(2)-Start/Stopp Auntemperaturvorgabe-Maximaltemperatur”. Change the stored value from the default -50.0 to 50. Click “Do it!” and then “Add to Log” to save the change.
Disabling Start-Stop with the Voltage Method
This method modifies the start voltage limit within the CAN Gateway module.
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Access CAN Gateway: Connect your VCDS interface and access module 19 – CAN Gateway.
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Open Adaptation: Navigate to the “Adaptation” function.
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Modify Start Voltage Limit: Locate the adaptation channel “Start/Stop start voltage limit.” Change the stored value from the default 7.6V to a value between 10V and the maximum permissible value of 12.1V. A value of 12 is often used. Click “Do it!” and then “Add to Log” to save the change.
Addressing Potential Issues: Golf R and Acc/Start Auth. Control Module
Certain Golf R models might utilize an “Acc/Start Auth.” control module (address 05). This module features a dedicated adaptation channel: “Deactivation of start-stop function.” While theoretically, changing this setting could disable start-stop, access to this module has been reported as restricted in some instances.
Conclusion
Disabling the Audi start-stop system with VCDS offers a straightforward solution for drivers seeking a consistently active engine. While both the Temperature and Voltage methods have proven effective, the appropriate method depends on your specific Audi model and year. Remember to always proceed cautiously with any coding modifications and consult reputable sources for guidance.
