Removing and installing backrest adjustment unit: Audi A6/A7 C7

🧭 Before you start

Fits: Audi A6/A7 C7 (4G, 2011–2018); platform code 4X

Don't miss

• Use a water-proof felt-tip pen to make mark (arrow B) on outer backrest frame (2) directly at front edge (arrow A) of fitting (1).
• As protection against metal swarf, place plastic film between seat cover and outer backrest frame.
• Risk of eye injuries.Wear safety goggles! — Drill out rivets (1) and detach backrest adjustment motor (4) with bracket.

📋 Procedure

1. ⚠ Observe safety regulations for pyrotechnic components .Before handling airbag units (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 trim (tunnel side) .
4. Remove trim (sill side):
5. Remove backrest cover panel .

6. Mark angular position of backrest fittings (left and right) on front seat as follows:
7. Use a water-proof felt-tip pen to make mark (arrow B) on outer backrest frame (2) directly at front edge (arrow A) of fitting (1).
8. Unscrew nut (3) from shaft (4).
9. Detach padding from outer backrest frame in area of backrest fitting .
10. Pull shaft (5) out of outer backrest frame (2)(arrow).
11. Unplug electrical connector (3) at backrest adjustment motor. [Note: As protection against metal swarf, place plastic film between seat cover and outer backrest frame.]
12. ⚠ Risk of eye injuries.Wear safety goggles! — Drill out rivets (1) and detach backrest adjustment motor (4) with bracket.
13. Check position of outer backrest frame (2) and fitting (1) on left and right side of backrest.
14. If the outer backrest frame is not in the position marked before removal (on left and right side), make adjustments as required.
15. Fit backrest adjustment motor (3) with bracket.
16. First slide shaft through fitting (tunnel side) as far as mounting (4) in backrest adjustment motor.
17. Check that profiles of inserted shaft and mounting in backrest adjustment motor are in line.
18. If profiles of shaft and mounting in backrest adjustment motor are not in line, apply an external 12 V power supply to backrest adjustment motor (3) and rotate mounting until profiles of shaft and mounting are in line.
19. Push shaft (5) through mounting in backrest adjustment motor as far as stop (sill side) (arrow).
20. Fit new nut (3) on shaft (4) and tighten.
21. Rivet (1) bracket with motor to outer backrest frame (2).

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