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Removing and installing four-way lumber support - vehicles from model year 2006 onwards — AUDI

Removing and installing four-way lumber support - vehicles from model year 2006 onwards on Audi: 19 steps.

Workshop procedure for AUDI — the exact step sequence and torque figures, straight from real workshop data.

19 steps

🧭 Before you start

Fits: Audi A4 Cabriolet B6/B7 (8H)

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  • Make sure that the lumbar support is secured to the lumbar support frame using either the assembly lock or a suitable pin .
  • Make sure that the lumbar support is secured to the lumbar support frame using either the assembly lock (3) or a suitable pin.
  • Before attaching rivet (4) you must place a plastic washer (1) between lumbar support (2) and outer backrest frame (3).

📋 Procedure

  1. Remove backrest cover panel .
  2. Use screwdriver to prise out fastening strips (10) (4x).
  3. Place foil between padding and outer backrest frame as protection against metal particles.
  4. Drill out rivet (7).
  5. Disengage lumbar support frame (4) at top left and right from outer backrest frame.
AUDI? Steps differ between engine variants — check this job against your exact car before you commit to it. Check my car — free →
  1. Unplug electrical connectors at control motors (5) and (9) for lumbar support.
  2. Undo velcro fastener between lumbar support (2) and backrest padding (1).
  3. Disengage lumbar support at top of lumbar support frame.
  4. Take out lumbar support.
  5. Place plastic foil on velcro strips of lumbar support. Attach plastic foil to lumbar support .
  6. Make sure that the lumbar support is secured to the lumbar support frame using either the assembly lock or a suitable pin .
  7. Position lumbar support frame behind outer backrest frame and engage top left and right of lumbar support frame in mounting on backrest.
  8. Rivet bottom of lumbar support frame to outer backrest frame. IMPORTANT: Place a plastic washer between lumbar support frame and outer backrest frame .
  9. Pull plastic foil out from between backrest padding and lumbar support.
  10. Press velcro fastener of lumbar support onto backrest padding.
  11. Plug electrical connectors into lumbar support motors.
  12. Place plastic foil (1) on velcro strips (2) of lumbar support. Attach plastic foil to lumbar support.
  13. Make sure that the lumbar support is secured to the lumbar support frame using either the assembly lock (3) or a suitable pin.
  14. Before attaching rivet (4) you must place a plastic washer (1) between lumbar support (2) and outer backrest frame (3).

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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.

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Workshop data on this page last updated 20 Sep 2026.