Replacing a clock spring in your vehicle often triggers a cascade of dashboard warning lights. This is normal. However, after installing a new clock spring, you’ll need to use a diagnostic tool like VCDS (Vag-Com Diagnostic System) to clear these fault codes and ensure proper functionality. This guide outlines the process and common issues encountered when using VCDS to change clock spring related errors.
Understanding the Clock Spring and its Role
The clock spring is a critical component located within the steering wheel assembly. It allows for electrical connections (like airbag, horn, and steering wheel controls) to be maintained while the steering wheel rotates. Damage to the clock spring can disrupt these connections, leading to malfunctions and warning lights.
Common Fault Codes After Clock Spring Replacement
After replacing a clock spring, you’ll likely encounter fault codes related to the airbag system, steering angle sensor, and steering wheel controls. These codes can manifest as warning lights on your dashboard, indicating potential issues. A VCDS scan will reveal the specific fault codes stored in your vehicle’s control modules. Common examples include:
- 00778 – Steering Angle Sensor (G85): Implausible Signal / No or Incorrect Basic Setting / Adaptation – This indicates the steering angle sensor needs calibration.
- 9437211 – Igniter for Driver’s Airbag: Resistance Too High – Often triggered by a disrupted connection to the airbag.
- Various communication errors within address word 16 (steering wheel): Often related to the multifunction steering wheel buttons and controls losing connection
Using VCDS to Clear Clock Spring Fault Codes
Before clearing any codes, ensure you have successfully installed the new clock spring and reconnected all components properly. Then, follow these steps:
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Connect VCDS to your vehicle’s OBD-II port. Ensure the ignition is switched on.
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Open VCDS software and select your vehicle model.
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Perform an Auto-Scan to identify all fault codes. This comprehensive scan will check all control modules in your vehicle. An example of a post clock spring replacement autoscan is included below:
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Navigate to the specific control module containing the fault codes. For clock spring related issues, this often includes modules related to the airbag system (Address 15), steering wheel (Address 16), and steering assist (Address 44). You may also see fault codes in other modules due to communication interruptions caused by the faulty clock spring.
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Select “Clear Fault Codes” or “Erase DTCs.” After clearing the codes, perform another Auto-Scan to verify that the errors have been successfully removed.
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Steering Angle Sensor (G85) Basic Setting. If you encountered a steering angle sensor fault code (like 00778), you may need to perform a basic setting or calibration. This procedure involves centering the steering wheel and following specific instructions within VCDS. Consult your vehicle’s repair manual or reputable online resources for the correct procedure for your specific model.
Important Considerations
- Battery Voltage: Ensure your vehicle’s battery is fully charged and maintains a stable voltage throughout the process. Low voltage can interrupt communication with the control modules and prevent successful code clearing.
- Coding: Some clock springs might require coding to the vehicle. Consult your vehicle’s repair manual or a qualified technician to determine if coding is necessary for your specific clock spring and model.
Conclusion
Using VCDS to clear fault codes after clock spring replacement is a relatively straightforward process. However, addressing any underlying issues and performing necessary calibrations like the Steering Angle Sensor basic setting are crucial for restoring your vehicle’s safety and functionality. If you encounter persistent issues or are unsure about any steps, consult a qualified automotive technician for assistance.
