Removing and installing lumbar support adjustment unit: Audi TT Mk2

🧭 Before you start

Fits: Audi TT Mk2 (8J, 2006–2014)

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• Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.
• If airbag warning lamp K75 indicates a fault following installation, you must interrogate, erase and then re-interrogate the fault memory .

📋 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. — Remove front seat .
2. Attach front seat to seat repair standVAS 6136.
3. Remove backrest cover panel .
4. Use screwdriver to prise out fastening strips (2) (3x).
5. Remove cover with padding .

6. Drill out rivet (3).
7. Disengage Bowden cable (3) from retaining plate (2).
8. Unfasten cable tie (1).
9. Thread Bowden cable (3) out of support (4).
10. Disengage Bowden cable (2) from four-way lumbar support (3).
11. Disengage Bowden cable (2) from clip (1).
12. Disengage four-way lumbar support (3) at top left and right from clips (2) and outer backrest frame (1).
13. Take out four-way lumbar support (3).
14. ⚠ Observe safety regulations for pyrotechnic components .Before handling pyrotechnic components (e.g. plugging in the electrical connector) the mechanic must discharge any static electricity. This can be done by briefly touching the door striker plate, or similar. — Before riveting on lumbar support, fit a plastic washer (4) between lumbar support (1) and outer backrest frame (2). [Note: Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.]
15. Switch on ignition.
16. ⚠ The battery must be connected with the ignition switched on. If pyrotechnic components (e.g. airbag or belt tensioner) are inexpertly repaired, this may result in unwanted triggering after connecting the battery. There must not be anyone in the vehicle while you are connecting the battery. — Connect battery earth wire with ignition switched on Electrical system27Battery; Disconnecting and connecting battery.
17. If airbag warning lamp K75 indicates a fault following installation, you must interrogate, erase and then re-interrogate the fault memory .

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