Removing and installing loudspeakers (Bang & Olufsen): Audi A8 D3

🧭 Before you start

Remove the rear shelf. For the subwoofer, unplug it, remove the bolts and lift it off the shelf. For a rear mid-range speaker, unscrew it from the underside of the shelf and detach it with its wire, or on the ring-mounted version unbolt the ring and remove speaker, ring and cover. Refit in reverse to the stated torques and reinstall the shelf.

Fits: Audi A8 D3 (4E, 2002–2010)

Don't miss

• Subwoofer R157 bolts: 2 Nm.
• Mid-range speaker R105 and its holding ring bolts: 3 Nm.
• Unplug the subwoofer connector before lifting it from the shelf.
• Route speaker wiring so it isn't trapped when the rear shelf goes back in.
• Check every channel plays cleanly before refitting the last trim.

Written for this job from the workshop steps below · TorqFix editorial.

🔩 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. Remove rear shelf General body repairs, interior70.
2. Unplug connector (2) at subwoofer in rear shelf R157(1).
3. Unscrew bolts (arrows) (2 Nm). — 2 Nm (1.5 lb-ft)
4. Lift off subwoofer in rear shelf R157(1) from rear shelf.
5. Installation is performed in reverse sequence.

6. Remove rear shelf General body repairs, interior70.
7. Working from underside of rear shelf, unscrew bolts (arrows) (3 Nm) at rear left mid-range loudspeaker R105(1). — 3 Nm (2.2 lb-ft)
8. Detach rear left mid-range loudspeaker R105(1) together with wire from rear shelf.
9. Installation is performed in reverse sequence.
10. Remove rear shelf General body repairs, interior70.
11. Unscrew bolts on ring holding loudspeaker (arrows) (3 Nm) on reverse side of rear shelf. — 3 Nm (2.2 lb-ft)
12. Remove rear left mid-range loudspeaker R105 together with ring (1) and move both parts clear to one side.
13. Remove cover for loudspeaker (2).

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