Bang & Olufsen sound system/all vehicles (from model year 2006 onwards, up to week 35/08) — AUDI
Bang & Olufsen sound system/all vehicles (from model year 2006 onwards, up to week 35/08) on Audi: 12 steps, 2 torque figures.
Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: Audi A8 D3 (4E, 2002–2010)
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 3 Nm (2.2 lb-ft) | Unscrew bolts (arrows |
| 5 Nm (3.7 lb-ft) | Loosen bolt (1 |
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
- Switch off all electrical equipment.
- Remove ignition key.
- When renewing control unit, select "“Replacement”" function for appropriate control unit in "“Guided Fault Finding”".
- Open left-side luggage compartment storage area.
- Loosen bolt (1) (5 Nm) and unfasten nut (2) (5 Nm). — 5 Nm (3.7 lb-ft)
- Remove navigation system with CD drive control unit J401 together with retainer (3) from storage space in luggage compartment and set down in luggage compartment.
- Unplug connectors (1), (3) and (4) on radioR(5).
- Unplug MOST Bus connector (2).
- Fit protective cap for cable connectorVAS 6223/9(1) onto MOST bus connector (2).
- Unscrew bolts (arrows) (3 Nm) and lift out radioR(5) from bracket. — 3 Nm (2.2 lb-ft)
- Remove speech input control unit J507.
- 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 drive plate - vehicles with automatic gearbox · 5 torque figures
- Sump (top section) - exploded view · 6 torque figures
- Removing and installing high-voltage wiring harness for drive motorPX2 · 5 torque figures
- Installing gearbox - vehicles with 3.0 ltr. TFSI engine – Audi · 2 torque figures
- Brake system — Removing and installing handbrake lever with undertray · 4 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.