Replacing gas-discharge lamp: Audi A6 C5
Step-by-step replacing gas-discharge lamp for the Audi A6 C5: 14 steps. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A6 C5 (4B)
- Also covered elsewhere: Electrical system general information94
Don't miss
- Heed installation position: The lug at the top of the bulb holder must engage in the recess of the gas discharge lamp.
📋 Procedure
- ⚠ Danger of fatal injury from high voltage, risk of injury and environmental pollutionFor gas discharge lamp usage and safety instructions, refer to Electrical system general information94. — With the ignition switched off, disconnect the earth wire at the battery:
- Detach cover (arrow) at power-assisted steering reservoir.
- Detach cover (arrow) on right of engine compartment.
- Screw out bolts (arrows).
- Remove air ducts (1) and (2).
- Release spring clips (arrows) and detach cover from headlight housing.
- Unplug connector (1) at gas-discharge lamp by turning anti-clockwise (arrow).
- Detach retaining ring (1) for gas-discharge lamp by turning anti-clockwise (arrow).
- Pull gas-discharge lamp out of headlight housing.
- Insert new gas-discharge lamp in housing, taking care not to touch glass bulb with bare hands. [Note: Heed installation position: The lug at the top of the bulb holder must engage in the recess of the gas discharge lamp.]
- Secure gas-discharge lamp with retaining ring.
- Plug connector back in.
- Secure housing cover with spring clips.
- Connect battery. Action to be taken:
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
- Checking for injectors sticking open (piezo injectors)
- Removing and installing Lambda probe before catalytic converter - bank 1 (right)
- Removing and installing oil retention valve and spray nozzle valve
- Renewing receiver or reservoir and restrictor after cleaning refrigerant circuit
- Checking cruise control system - petrol engines with electronic throttle
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.