Removing and installing electric lumbar support: Audi A8 D4

🧭 Before you start

Remove the front seat after discharging static, mount it on the seat stand and fold back the backrest cover and padding, freeing the Velcro strips. Protect the cover with plastic sheeting, drill out the rivet, unplug both motor connectors and unhook the mount from the backrest frame. On refitting, cover the Velcro with sheeting, lock the mount to the support, engage it on the frame and rivet it with a plastic washer in between. Fold the padding back, pull out the sheeting and press the Velcro firmly home.

Fits: Audi A8 D4 (4H, 2010–2017)

Don't miss

• Discharge static by touching the door striker before unplugging anything near the seat's pyrotechnic components.
• Lay plastic sheeting between the cover and the frame before drilling the rivet; swarf ruins trim.
• Fit the plastic washer between support and backrest frame before setting the new rivet.
• Secure the mount to the lumbar support with the locking element or a pin before engaging it.
• Remove the protective sheeting afterwards and press the Velcro strips firmly onto the padding.

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

📋 Procedure

1. ⚠ Observe safety precautions when working on pyrotechnic components .Before handling pyrotechnic components (e.g. unplugging the electrical connector) the mechanic must discharge any static electricity. This can be done by briefly touching the door striker plate, or similar. — Remove front seat .
2. Attach front seat to seat repair standVAS 6136.
3. Remove backrest cover with backrest padding .
4. When doing so, separate the backrest padding from the Velcro strips (3) of the lumbar support (2). [Note: A good deal of force is required to unfasten the Velcro strip.]
5. If applicable, disengage the lumbar support at the mount (1)(arrows). [Note: As protection against metal swarf, place plastic sheeting between the seat cover and the backrest frame.]

6. ⚠ Risk of eye injuries.Wear safety goggles! — Drill out the rivet (3).
7. Unplug the connectors (1) and (2) at the longitudinal and height adjustment motors for the lumbar support.
8. Disengage the mount (2) at the backrest frame (1) and detach.
9. If applicable, engage the lumbar support (2) at the mount (1)(arrows).
10. Place plastic sheeting (1) over the Velcro strips (3) of the lumbar support (2) and fix in position.
11. Make sure the mount is connected to the lumbar support with the locking element (4) or a suitable pin.
12. Engage the mount (2) at the backrest frame (1).
13. Before setting rivet (4), fit a plastic washer (1) between lumbar support (2) and backrest frame (3).
14. Rivet the lumbar support to the backrest frame.
15. Fold the backrest padding with the backrest cover over the backrest frame.
16. Pull out the plastic sheeting between the lumbar support and backrest padding.
17. Press the lumbar support Velcro strips firmly onto the backrest padding.

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