Removing and installing centre mid-range and treble loudspeaker R158 — AUDI
Removing and installing centre mid-range and treble loudspeaker R158 on Audi: 7 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 A5 (8T, 2007–2016)
🔩 Torque settings
Values can differ between engine variants — check the code stamped on your block.
| Torque | Fastener / step |
|---|---|
| 2 Nm (1.5 lb-ft) | Unscrew bolts (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
- Switch off all electrical equipment.
- Remove ignition key.
- Unclip trim panel for loudspeaker in dash panel.
- Remove bolts (2) on centre mid-range and treble loudspeaker R158(1).
- Release and unplug connector at centre mid-range and treble loudspeaker R158(1).
- Remove centre mid-range and treble loudspeaker R158(1) from dash panel.
- Install in reverse sequence of removal.
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
- Checking air mass meter -G74 for control unit no. 8A0 906 266 B (08.92 >)
- Checking injectors (injection quantity comparison measurement)
- Removing and installing shift mechanism with Tiptronic
- Removing and installing selector lever cable at shift mechanism with Tiptronic
- Renewing sealing ring and grooved ball bearing for left flange shaft oil seal
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 → · How these pages are made →Workshop data on this page last updated 20 Sep 2026.