Removing and installing lumbar support longitudinal adjustment motor V125 / V126 — AUDI

🧭 Before you start

Fits: Audi A3 (8P, 2003–2012)

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• Risk of injury!Wear safety goggles. — Drill out rivets (4) (2x) at backrest frame (1).
• 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 static electricity by briefly touching the door striker plate, or similar. — Switch off ignition.
2. With ignition switched off, disconnect battery earth wire 27.
3. Remove front seat .
4. Attach front seat to seat repair standVAS 6136.
5. Remove front seat backrest .

6. Remove seat cover with padding .
7. To remove driver seat lumbar support longitudinal adjustment motor V125, remove side airbag .
8. Disengage Bowden cable (3) at retaining plate (2).
9. Unfasten cable tie (1).
10. Disengage Bowden cable from bracket (4).
11. Unplug electrical connector (3).
12. ⚠ Risk of injury!Wear safety goggles. — Drill out rivets (4) (2x) at backrest frame (1).
13. Remove driver seat lumbar support longitudinal adjustment motor V125(item 2) / front passenger seat lumbar support longitudinal adjustment motor V126 with Bowden cable.
14. ⚠ Observe safety regulations for pyrotechnic components .Before handling pyrotechnic components (e.g. plugging in the electrical connector) the mechanic must discharge static electricity by briefly touching the door striker plate, or similar. — Rivet driver seat lumbar support longitudinal adjustment motor V125(item 2) / front passenger seat lumbar support longitudinal adjustment motor V126 to backrest frame (1) using special pop rivet pliersV.A.G 1753A. [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. — With ignition switched on, connect battery earth wire 27. [Note: 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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