Adjusting gas discharge headlights/LED headlights: Audi A3

🧭 Before you start

Fits: Audi A3 (8V, 2012–2020)

• Also covered elsewhere: Electronic parts catalogue

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• Use canisters filled with water as additional weight (a 5 litre canister filled with water weighs approx. 5 kg).
• With this programme the headlights return to the basic setting.
• Lateral adjuster screw (3) must be secured with a plug after adjustment on USA vehicles. For plug, refer to Electronic parts catalogue.
• The arrangement on the right headlight is symmetrically opposite.

📋 Procedure

1. Read off fuel tank level at fuel gauge in dash panel insert, compare with the following table and, if necessary, place additional weight in luggage compartment. [Note: Use canisters filled with water as additional weight (a 5 litre canister filled with water weighs approx. 5 kg).] [Note: The percentage value is for a range of 10 m. Example: Converting a dip setting of 1.0% = 10 cm.]
2. Turn light switch to "“dipped beam”" position – not to "“Auto”" position.
3. Connect (see the separate procedure).
4. Select Diagnosis mode and start diagnosis.
5. Select Test plan tab.

6. Select Own test then the following options one after the other: [Note: With this programme the headlights return to the basic setting.]
7. Continue to follow the instructions on the display of the vehicle diagnostic tester.
8. You will be instructed to perform headlight adjustment while running through the programme Operating instructions for headlight adjustment unit. [Note: To make it easier to find the break-away point (2), cover and uncover the left half of the headlight (as seen in direction of travel) a few times. Then check the dipped beam again. If dipped beams have been adjusted correctly the centre point of the main beam should lie on central point (3).]
9. Turn adjuster screw (3) for lateral adjustment. [Note: Lateral adjuster screw (3) must be secured with a plug after adjustment on USA vehicles. For plug, refer to Electronic parts catalogue.]
10. Before adjusting height of headlight (1), use adjuster screw (2) to position light-dark border below setting line.
11. Then adjust light-dark border to setting line from below. [Note: The arrangement on the right headlight is symmetrically opposite.]
12. After completing headlight adjustment, end "“Basic setting”", switch off ignition and unplug diagnostic connector.

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