Removing and installing seat position sensor - equipment version with seat occupied recognition system controlling deactivation of front passenger airbag — AUDI

🧭 Before you start

Fits: Audi A4 B8 (8K, 2007–2015)

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

📋 Procedure

1. ⚠ Observe safety regulations for working on pyrotechnic components and seat occupied sensors controlling deactivation of front passenger airbag .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. Unscrew bolt (3) and detach seat position sensor (4) from lower seat pan frame.
4. ⚠ Take care not to damage insulation of individual wires. — Cut back protective hose (2) almost up to retaining clip (1).
5. Cut off both electrical wires at locations marked with (arrow A) and (arrow B) to approx. 1/3 to 2/3 of the free wire length.

6. ⚠ 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. — Cut electrical wires to same length at new seat position sensor as with old seat position sensor.
7. Connect electrical wires with crimp connectors (arrow A) and (arrow B)Electrical system, General information97.
8. Wrap wiring harness with reinforced adhesive tape starting at seat position sensor over entire wiring harness.
9. Install seat position sensor, making sure that hook (arrow C) on seat position sensor is inserted in lower seat pan frame. [Note: Make sure electrical connectors are fitted correctly (as far as stop) and engage audibly.]
10. ⚠ 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 Electrical system27Battery; Disconnecting and connecting battery. [Note: If the airbag warning lamp K75 indicates a fault following installation, you must interrogate, erase and then re-interrogate the event memory .]

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