Removing and installing digital sound package control unit J525 (BOSE 6000), MMI (up to week 35/08) — AUDI
Removing and installing digital sound package control unit J525 (BOSE 6000), MMI (up to week 35/08) on Audi: 11 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 A6 C6 (4F, 2004–2011)
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 4 Nm (3.0 lb-ft) | Unscrew bolts (2 |
| 5 Nm (3.7 lb-ft) | Unscrew the nuts (2) and (4 |
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
- When renewing control unit, select "“Replacement”" function for appropriate control unit in "“Guided Fault Finding”".
- Switch off all electrical equipment.
- Remove ignition key.
- Open left-side luggage compartment storage area.
- Remove luggage compartment side trim (left-side) General body repairs, interior70.
- Unscrew the nuts (2) and (4) (5 Nm) and bolt (1) (5 Nm) on the infotainment rack (3). — 5 Nm (3.7 lb-ft)
- Pivot the rack into the luggage compartment until the securing bolts (2) for the digital sound package control unit J525(1) are accessible.
- Unplug all connectors at digital sound package control unit J525.
- Fit protective cap for cable connectorVAS 6223/9(1) onto MOST bus connector (2).
- Unscrew bolts (2) (4 Nm) and remove digital sound package control unit J525(1) from rack (3). — 4 Nm (3.0 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
- 3-cylinder TDI unit injector engine (1.4 ltr. 2-valve), mechanics — Removing engine · 2 torque figures
- Removing gearbox - vehicles with 8-cyl. MPI engine (Audi S4) · 2 torque figures
- Removing gearbox - vehicles with 8-cyl. FSI engine (Audi RS 4) · 2 torque figures
- Removing and installing drive pinion and differential · 2 torque figures
- Removing and installing window regulator – Audi A3 · 6 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.