Removing and installing battery isolation igniter N253 - vehicles up to 05/2006 — AUDI

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

Don't miss

• The mechanic must discharge static electricity before unplugging the electrical connector; to do so, briefly touch door striker plate, or similar. — Unplug electrical connector (5).
• Observe the disposal procedure for pyrotechnic airbag units .
• When plugging in connector make sure it is properly engaged and locked in place.
• Make sure nobody is in the vehicle when the battery is being connected. — Observe measures to be taken after connecting the battery Electrical system27.

📋 Procedure

1. ⚠ Battery isolation igniters N253 are pyrotechnic components. The same safety regulations apply as for airbags. Observe safety regulations for working on airbags . — Switch on ignition.
2. Disconnect battery Electrical system27.
3. Remove battery Electrical system27.
4. Release clasps (arrows) and open flap (1) covering battery isolation igniter N253.
5. Unscrew nuts (1) and (3) and bolt (4) at positive wires.

6. Take battery isolation igniter N253(item 2) out of its retainer.
7. ⚠ The mechanic must discharge static electricity before unplugging the electrical connector; to do so, briefly touch door striker plate, or similar. — Unplug electrical connector (5).
8. To do so, pull connector locking element (1) as far as the stop (arrow). This will release the electrical connector (2) which can then be unplugged. [Note: Observe the disposal procedure for pyrotechnic airbag units .]
9. ⚠ Battery isolation igniters N253 are pyrotechnic components. The same safety regulations apply as for airbags. Observe safety regulations for working on airbags . — Observe specified tightening torque .
10. When plugging in connector make sure it is properly engaged and locked in place.
11. ⚠ Make sure nobody is in the vehicle when the battery is being connected. — Observe measures to be taken after connecting the battery Electrical system27.
12. Finally read out event memory for airbag control unit using and rectify faults as necessary.

Other AUDI procedures

• Removing and installing toothed belt – Audi · 56 torque figures
• Removing engine – Audi A8 D3 · 41 torque figures
• Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
• Installing engine – Audi A8 D4 · 36 torque figures
• Removing and installing camshaft timing chain · 29 torque figures
• Checking delivery pressure of vane pump
• Removing and installing vane pump
• Installing engine - vehicles with four-wheel drive – Audi BJB
• Removing and installing radiator and fan – Audi 2.5 TDI
• Removing and installing fuel gauge sender · 1 torque figures