This guide provides instructions on how to enable US-style running lights on a Volkswagen MK5 Golf using VCDS (Vag-Com Diagnostic System). This modification utilizes the existing front turn signal lamps as daytime running lights (DRLs), providing a distinctive North American lighting appearance. Important note: This modification is recommended only for vehicles equipped with LED turn signal lamps. Incandescent bulbs may overheat due to the increased duty cycle.
This enhanced procedure includes a feature to deactivate the opposite-side turn signal when one is activated. This improvement, suggested by community member A l 3, aims to clarify the lighting signals for other drivers. If you prefer the standard behavior, simply skip step 3 of the adaptation process.
Activating US Running Lights with VCDS
To activate the US running light configuration, follow these steps carefully:
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Access Central Electronics Module: Connect your VCDS interface to the vehicle’s OBD-II port and launch the software. Select 09 – Central Electr control module.
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Enter Security Access Code: Navigate to Security Access – 16 within the “Open Controller” screen. Enter the access code 31347 and return to the “Open Controller” screen.
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Optional: Deactivate Opposite Turn Signal: (Skip this step if you prefer not to implement this feature.) Within Adaptation – 10, modify the adaptation channel responsible for turn signal behavior to deactivate the opposite side when a turn is indicated. Consult your VCDS documentation for the specific channel related to your vehicle’s model year.
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Modify Adaptation Channels: Select Adaptation – 10 from the “Open Controller” screen.
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Verify Default Settings: Using the pull-down menu, confirm that the current values for the adaptation channels listed in the table below match the corresponding “Factory Setting” values. This ensures a proper starting point before implementing any changes.
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Adjust Adaptation Channels: Modify the adaptation channels listed in the table below to the values specified in the “New Setting” column. Remember, there are four adaptation channels to adjust for each “Leuchte-set,” resulting in a total of eight changes.
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Save and Exit: After making all the necessary changes, save the new adaptation values and exit VCDS. Your MK5 Golf should now have US-style running lights enabled.
Conclusion
Enabling US running lights on your MK5 Golf with VCDS is a straightforward process when following these instructions. Remember to double-check all adaptation channel values before and after modification. Always prioritize safety and ensure your vehicle’s lighting complies with local traffic regulations. If you have any doubts or concerns, consult a qualified automotive technician before attempting this modification.
