Removal and installation the airbag unit (Audi A4 B6)

Table of contents: Removal the driver's airbag ↓ Location of safety system elements… ↓ Crash sensor for security systems ↓ Front passenger airbag mount ↓ Head airbag unit ↓ Removal the side airbag unit ↓ Removal ↓ Installation ↓

1 - Torx T30 screws, 7 Nm
2 - Steering wheel, various designs
3 — Spring plug
4 — Airbag unit connector
5 — Airbag unit
6 — Horn plug
7 - Hexagon socket head cap screw, 50Nm
8 — Steering wheel heating plug
9 - Return ring with contact ring

Removal the driver's airbag

1 - Steering wheel
2 — Coil spring connector
3 — Airbag module connector
4 - Multi-contact bolt
5 - Threaded bushing
6 — Driver airbag module
7 — T30 Torx Bolt
8 — T30 Torx Bolt
9 - Spiral spring
10 — Torx key
11 — Steering wheel heating connector

Location of safety system elements in the cabin

1 - Airbag control module
2 — Front passenger airbag module
3 — Front passenger presence sensor
4 - Right airbag module
5 — Right seat control
6 — Left seat airbag module
7 — Left airbag module
8 — Diagnostic connector
9 - Spiral spring
10 — Driver airbag module

Crash sensor for security systems

Front passenger airbag mount

1 — Front passenger airbag
2 - Support bracket
3 - Mounting bracket
4 - Angle bracket
5 - Mounting bracket

Head airbag unit

1 - D-pillar
2 - Fuse
3 - Bolt
4 - Retaining loop
5 — Head side airbag
6 - Handle adapter
7 - Latch
8 - Post A
9 - Self-locking bolts
10 - Stand B
11 — Stand C
12 - Latch
13 - Bolt
14 — Electrical wiring connector
15 - Fold back and secure

Removal the side airbag unit

Removing the security system control unit

Removal

1. Read and follow the airbag safety instructions.

2. Disconnect the negative (-) battery cable.

Warning: Follow the instructions in Section Replacing the battery.

3. Insulate the battery terminals.

4. Unlock the steering column adjustment mechanism.

5. Extend the steering wheel (2) as far as possible and pull it up. Set it vertically, refer to the illustration Driver's airbag.

6. Remove one of the two Torx T30 screws (1).

7. Turn the steering wheel back half a turn and remove the second Torx screw (1).

8. Disconnect the airbag unit connector (4).

9. Disconnect the horn connector (6).

10 Place the airbag unit (5) with the impact side of the airbag facing upwards.

Installation

1. Connect connectors (4) and (6) and secure them with locking clips (a distinct click should be heard).

2. Make sure that no cable is in contact with the gas generator and that the cable is not pinched.

3. Fold the airbag cable on the left into a loop.

4. Loop the horn cable.

5. Tighten the screws (1) to torque 7 Nm, refer to the illustration Driver's airbag.

6. Turn on the ignition.

7. Connect the negative battery cable.