The steering column adjustment in some Audi models, like the Q7, can malfunction, leaving the driver stuck with an uncomfortable driving position. Often, attempts to reset the system using VCDS (VAG-COM Diagnostic System) result in the counter not decreasing, indicating a persistent problem. This article explores potential causes and solutions when the reset counter doesn’t go down in VCDS while attempting to fix a non-responsive steering column.
Understanding the Steering Column Adjustment Reset Procedure
The typical VCDS procedure for resetting the steering column involves accessing Module 09 – Central Electronics, entering Basic Settings, and selecting Steering Column Adjustment (Group 001). Activating the basic setting should initiate a recalibration process. However, if the counter remains stuck or doesn’t decrease as expected, it signifies an underlying issue preventing the system from completing the reset.
Common Causes for Reset Counter Failure
Several factors can contribute to the reset counter not going down in VCDS:
- Faulty Steering Column Motor: A malfunctioning motor can prevent the column from reaching its end positions, a crucial step in the reset process. The motor might be seized, have internal damage, or lack sufficient power.
- Wiring or Connector Issues: Damaged wiring or loose connections between the steering column motor and the control module can disrupt communication and prevent the reset. Corrosion or broken wires can interrupt the signal flow.
- Position Sensor Problems: Sensors (potentially G357 and G358, though confirmation is needed with a wiring diagram) monitor the column’s position. If these sensors are faulty or misaligned, they may provide incorrect data to the control module, hindering the reset.
- Control Module Malfunction: In some cases, the central electronics control module itself might be faulty, preventing it from correctly processing the reset commands or communicating with the steering column components.
Possible Solutions When Reset Counter Doesn’t Decrease
When faced with a stuck reset counter, consider these potential solutions:
- Verify End Position Reachability: Ensure the steering column can physically reach all four end positions (up, down, forward, back). Manually assisting the column or applying an external current source (with extreme caution and following proper procedures) to the motor might help achieve these positions if the motor is weak. This process could enable the system to recognize movement and potentially allow the reset.
- Inspect Wiring and Connectors: Thoroughly inspect the wiring harness and connectors associated with the steering column motor and position sensors for damage, corrosion, or loose connections. Repair or replace any faulty components.
- Diagnose Position Sensors: If wiring and connections are intact, diagnose the position sensors using VCDS to verify their functionality and alignment. Replace faulty sensors.
- Address Control Module Issues: If other components check out, a faulty control module might be the culprit. Advanced diagnostics or consultation with a specialized technician may be necessary to confirm and address this issue. In rare cases, module replacement or reprogramming might be required.
Example of a steering column motor connector. Disconnecting and applying an external power source should only be done with caution and after consulting a wiring diagram.
Conclusion
A non-decreasing reset counter when addressing Audi steering column issues with VCDS indicates a problem that needs further investigation. By systematically checking the motor, wiring, position sensors, and control module, you can pinpoint the root cause and implement the appropriate solution. Remember to consult the vehicle’s wiring diagrams and proceed with caution when working with electrical components. If the problem persists, seeking professional assistance from a qualified Audi technician is recommended.
