Removing and installing digital sound package control unit J525, BOSE 6000 basic (up to week 35/08) — AUDI

🧭 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.

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

1. When renewing control unit, select "“Replacement”" function for appropriate control unit in "“Guided Fault Finding”".
2. Switch off all electrical equipment.
3. Remove ignition key.
4. Open left-side luggage compartment storage area.
5. Remove luggage compartment side trim (left-side) General body repairs, interior70.

6. Unplug all connectors at digital sound package control unit J525.
7. Fit protective cap for cable connectorVAS 6223/9(1) onto MOST bus connector (2).
8. Remove bolts (2) and (3) (4 Nm) at digital sound package control unit J525(1) and detach digital sound package control unit J525(1) from retaining plate. — 4 Nm (3.0 lb-ft)
9. Installation is performed in reverse sequence.

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