Removing front seat if seat longitudinal adjustment motor or control unit are defective — AUDI

🧭 Before you start

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

• Special tools named: VAS 6282
• Renewed: wire

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• To avoid unnecessary repair costs, check the electrical/electronic components and wiring before removing the front seat any further.
• If fuse is defective, it must be renewed .
• If seat longitudinal adjustment motor is defective, lower seat pan frame must be renewed .
• For greater clarity, the seat pan is shown without the padding, cover and backrest.
• For greater clarity the surrounding area is not shown.

📋 Procedure

1. ⚠ Observe safety regulations for 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. — Move front seat as far upwards as it will go. [Note: To avoid unnecessary repair costs, check the electrical/electronic components and wiring before removing the front seat any further.]
2. Perform the following checks:
3. If fuse is defective, it must be renewed .
4. Repair or renew wire if there is no voltage at connector point .
5. If seat longitudinal adjustment motor is defective, lower seat pan frame must be renewed .

6. If control unit is defective, renew control unit J136/J521.
7. ⚠ 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. — With ignition switched on, disconnect battery earth wire Electrical system27Battery; Disconnecting and connecting battery.
8. Remove belt end fitting (front) .
9. Plug in connector of airbag adapter VAS 6282 at electrical connector for side airbag .
10. Unplug electrical connectors.
11. Remove bolt (3).
12. Disengage seat position sensor (2) from lower seat pan frame (1) at hooks (arrow).
13. Unclip electrical wiring from lower seat pan frame and move to one side.
14. Unplug electrical connector at seat longitudinal adjustment motor.
15. Remove bracket for modular wire routing at lower seat pan frame.
16. Unplug electrical connector for belt buckle (front) .
17. ⚠ Risk of damage to threaded holes or bushes in pivot points (bolted connection between upper and lower frame).A second mechanic is required to take hold of the backrest and press the seat downwards slightly when removing the bolts listed below.Risk of damage to thread of bolt (3).Bolt for adjustment spindle has left-hand thread. — Remove bolt (3).
18. Remove bolts (2).
19. With the help of a second mechanic, lift upper seat pan frame (1) off lower frame (4) and remove from vehicle. [Note: For greater clarity, the seat pan is shown without the padding, cover and backrest.]
20. ⚠ Risk of damage to threaded holes or bushes in pivot points (bolted connection between upper and lower frame).A second mechanic is required to take hold of the backrest and press the seat downwards slightly when removing the bolts listed below.Risk of damage to thread of bolt (6).Bolt for adjustment spindle has left-hand thread. — Remove bolt (6).
21. Remove bolts (4).
22. Disengage retaining plate (3) at lower seat pan frame (arrow) and detach.
23. Remove bolts (1 and 5).
24. With the help of a second mechanic, disengage upper seat pan frame (2) from lower frame (7) and remove from vehicle. [Note: For greater clarity, the seat pan is shown without the padding, cover and backrest.]
25. ⚠ Risk of damage to bushes (1) in pivot points (2) (bolted connection between upper and lower frame).The bushes cannot be renewed with the equipment available to workshops.The relevant components must be renewed if the bushes are damaged. — Unscrew accessible bolts for seat rails at console. [Note: For greater clarity the surrounding area is not shown.]
26. Unscrew bolts (2) and (5) and remove defective seat longitudinal adjustment motor (1) with bracket.
27. Move seat rails (3) and (4) forwards/backwards until bolt for seat rail is accessible.
28. Unscrew bolt and detach seat rail.
29. Renew lower seat pan frame with seat longitudinal adjustment motor .
30. ⚠ Observe safety regulations for 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. — With ignition switched on, disconnect battery earth wire Electrical system27Battery; Disconnecting and connecting battery.
31. Remove belt end fitting (front) .
32. Unplug electrical connector at seat longitudinal adjustment motor.
33. Connect seat longitudinal adjustment motor to an external 12 V power supply and move front seat forwards or backwards as necessary until bolts are visible.
34. Remove bolts (1, 2, 3 and 5).
35. Unplug electrical connectors and plug in connector of airbag adapter VAS 6282 at electrical connector for side airbag .
36. Before lifting out front seat, attach protectorVAS 871001 as shown in illustration to protect sill panel trim.
37. Lift front seat out of vehicle with the assistance of a second mechanic.
38. Attach front seat to seat repair standVAS 6136.
39. Renew control unit J136/J521.

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