This guide provides step-by-step instructions on how to perform a Xenon headlamp adjustment using VCDS (Vag-Com Diagnostic System) on Volkswagen and Audi vehicles. This procedure focuses on older Xenon systems utilizing the KW-1281 protocol. For newer vehicles using KWP-2000 or CAN systems, consult the Ross-Tech wiki. This process allows you to reset the motorized headlamp adjusters to their center position, enabling accurate manual adjustment using the aiming screws. Remember, this procedure doesn’t align the headlamps automatically; you’ll still need a suitable aiming target and tools for manual fine-tuning.
Prerequisites for Xenon Headlight Adjustment with VCDS
Before initiating the Xenon range adjustment with VCDS, ensure your vehicle meets these crucial conditions:
- Level Ground: Park the vehicle on a level surface to ensure accurate adjustment. The suspension should be settled.
- Parking Brake: The parking brake should be OFF.
- Ignition: Turn the ignition to the “On” position without starting the engine.
- Headlamps: Ensure the headlamps are switched “Off” before starting the procedure.
Xenon Range Adjustment Procedure Using VCDS
Follow these steps to adjust your Xenon headlamps using VCDS:
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Select Xenon Range: In VCDS, navigate to [55 – Xenon Range]. In some newer models, this may be located under [29 – Left Light].
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Access Basic Settings: Once in the Xenon Range module, select [Basic Settings – 04].
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Select Group 001: Within Basic Settings, choose Group 001, then click [Go!].
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Wait for Adjustment: Allow at least 20 seconds for the headlamp motors to move to their center position.
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Manual Adjustment: Now, turn on your headlamps. Using the manual adjusting screws on the headlights, align the beams against a suitable aiming target. Refer to your vehicle’s repair manual for specific adjustment procedures.
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Confirm Adjustment: In VCDS, scroll up to Group 002. This confirms the Xenon Range controller has learned the new position as its home position.
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Complete Procedure: Click [Done, Go Back] to finalize the procedure. Your Xenon headlamp adjustment is now complete.
Troubleshooting Xenon Range Adjustment Issues
Lowered vehicles might display errors in Basic Settings Group 001 or 002. If the vehicle height sensor is bottomed out, adjusting the sensor bracket might be necessary. Ensure the sensor arms are correctly positioned. Incorrect pivot orientation can also cause issues.
Conclusion
Performing a Xenon range adjustment using VCDS is a crucial step in ensuring optimal headlight performance. By following these steps and addressing potential issues, you can ensure proper visibility and driving safety. Always refer to your vehicle’s factory repair manual for specific instructions and safety precautions. Remember to use a proper aiming target for accurate headlight alignment after performing this VCDS procedure.
