Removing and installing control unit for daytime running light and side light J860/J861 - gas discharge headlights — AUDI
Removing and installing control unit for daytime running light and side light J860/J861 - gas discharge headlights on Audi: 11 steps.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A3 (8V, 2012–2020); platform code 85
Don't miss
- Do not flash the headlights.
📋 Procedure
- ⚠ High voltage! Danger to life!Ensure that any part of the gas discharge headlights marked with yellow high-voltage warning symbols are de-energised when you are working on them.Switch off ignition and all electrical equipment and remove ignition key.Do not flash the headlights. — Turn light switch to position "“0”".
- Switch off ignition and all electrical equipment and remove ignition key.
- Do not flash the headlights.
- Left side, equipment version without side auxiliary radiator: Remove headlight .
- Equipment version with side auxiliary radiator: Remove auxiliary radiator and move it to one side with coolant hoses attached 19Radiator/radiator fans; Removing and installing auxiliary radiator.
- Right side: Release lower section of wheel housing liner (front) and press to side General body repairs, exterior66Wheel housing liners; Removing and installing wheel housing liner (front).
- Remove bolts (arrows).
- Detach control unit (1) from headlight.
- Press release tab (2) to unplug electrical connector (3).
- Detach control unit.
- Check seal (4) between control unit and headlight for damage.
Other AUDI procedures
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
- Renewing bonded rubber bushes for axle beam – Audi A1
- Removing and installing brake caliper · 2 torque figures
- Removing and installing rear expansion valve – Audi Q7 · 2 torque figures
- Removing gearbox - vehicles with 1.4 ltr. TFSI and 2.0 ltr. TFSI engine
- Removing and installing fuel pressure sender G247 / G624 · 2 torque figures
Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com
The story behind TorqFix →Workshop data on this page last updated 20 Sep 2026.