Removing and installing airbag unit with igniter — AUDI

🧭 Before you start

Switch on the ignition, disconnect the battery, and position the steering column low and fully extended. Release the right and left airbag catches with a screwdriver through the hole in the back of the wheel, return the wheel to centre and lift the unit off. Discharge static before separating the connectors. Rejoin connectors until they click, press the unit in, check both sides are engaged, reconnect the battery with nobody inside, then read and clear the airbag event memory.

Fits: VW Caddy IV (SA, 2015–2020)

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• Discharge static by touching the body or striker plate before unplugging the airbag igniter connectors.
• The airbag connector must engage audibly when joined.
• Check the unit is locked into the wheel on both left and right sides.
• Connect the battery with the ignition on and nobody in the vehicle.
• Read and clear the airbag control unit event memory afterwards.

Written for this job from the workshop steps below · TorqFix editorial.

📋 Procedure

1. ⚠ Observe general safety regulations when working on airbag, belt tensioner and battery isolator units (pyrotechnic components) . — Switch on ignition.
2. Disconnect vehicle battery Electrical system27Battery; Disconnecting and reconnecting battery.
3. Move steering wheel to lowest position.
4. Extend steering wheel as far as possible into passenger compartment.
5. Turn steering wheel to position shown.

6. Insert screwdriver as far as it will go into hole (approx. 8 mm) in back of steering wheel.
7. Turn screwdriver towards driver door (arrow).
8. This action releases airbag unit fastener on right side of steering wheel.
9. Turn steering wheel 180° and release catch of airbag unit on left side of steering wheel.
10. Turn steering wheel 90° back to middle position.
11. Release airbag unit from steering wheel.
12. ⚠ Electrostatic discharges may result in unintentional triggering of airbag. Therefore, the mechanic must electrostatically discharge him/herself before disconnecting the igniter and earth wires. This can be done by briefly touching the body or striker plate of the door. — Separate electrical connectors (1) and (2).
13. Join electrical connectors (1) and (2).
14. [Note: The airbag connector must audibly engage.]
15. Insert connector (1) into plug-in connector.
16. Press airbag unit into steering wheel.
17. Check that airbag unit is engaged on left and right sides in steering wheel.
18. Connect battery Electrical system27Battery; Disconnecting and connecting battery.
19. ⚠ Battery must be connected with ignition switched on. If pyrotechnic components (e.g. airbag, seat belt tensioners) are repaired incorrectly, undesired triggering may occur after the battery is connected. Ensure that nobody is in vehicle when connecting battery. — Finally, read and clear event memory of airbag control unit since faults may be stored as a result of disconnecting electrical connectors .

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