Removing and installing fire extinguisher system control unit J475 — AUDI
Removing and installing fire extinguisher system control unit J475 on Audi: 4 steps, 1 torque figure.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A8 D4 (4H, 2010–2017)
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 5 Nm (3.7 lb-ft) | Unscrew nuts (arrows |
ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.
📋 Procedure
- ⚠ The fire extinguisher system activation switch E572(5) in the front centre console storage compartment must be set to "“OFF”" before maintenance or repair work is performed on the fire extinguisher system. — Open the right flap in the luggage compartment.
- Unplug connector (2) at fire extinguisher system control unit J475(1).
- Unscrew nuts (arrows) (5 Nm) and remove fire extinguisher system control unit J475. — 5 Nm (3.7 lb-ft)
- Installation is performed in reverse sequence.
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
- Removing and installing operating unit (air conditioning system control unit J301) - manually controlled air conditioner · 1 torque figures
- Removing and installing fuel delivery unit - A5 up to model year 2011, A4 up to model year 2012 (vehicles with four-wheel drive)
- Removing and installing wheel bearing housing - four-wheel drive vehicles
- Removing and installing steering rack - hydraulic power steering rack
- Removing and installing power steering pump (vehicles with 10-cylinder FSI engine)
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.