Audi A4: Head Curtain Airbags

Overview - Head Curtain Airbag

  Note

The Avant is shown.

1 - Bolt

• 5 Nm
• Replace after removing

2 - Clip

• Quantity: 2

3 - Clip

• Only available with -6-
• Remove with Clip Pliers -VAS211001-

4 - Colored Strip

• Serves as anti-rotation protector
• Must be visible after assembly.

5 - Connector

• For

• Driver Head Curtain Airbag Igniter -N251-
• Front Passenger Head Curtain Airbag Igniter -N252-

6 - Head Curtain Airbag

• With

• Driver Head Curtain Airbag Igniter -N251-
• Front Passenger Head Curtain Airbag Igniter -N252-

  WARNING

Risk of injury due to involuntary deployment.

Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".

• Removing and installing. Refer to → Chapter "Head Curtain Airbag with Igniter, Removing and Installing".

7 - Bolt

• 5 Nm
• Replace after removing

Head Curtain Airbag with Igniter, Removing and Installing

Special tools and workshop equipment required

• Clip Pliers -VAS211001-

  Caution

This procedure contains mandatory replaceable parts. Refer to component overview and parts catalog prior to starting procedure.

Mandatory Replacement Parts

• Bolt - Head Curtain Airbag to Roof

  Note

Removing and installing for the Avant is described.

Removing

  WARNING

Risk of injury due to involuntary deployment.

• Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".
• Observe the disposal regulations for pyrotechnical components. Refer to → Chapter "Airbag, Belt Tensioner and Battery Cut-Out Units, Storing, Transporting and Disposing (Pyrotechnic Components)".

- Disconnect the battery ground cable with the ignition turned on. Refer to → Electrical Equipment; Rep. Gr.27; Battery; Battery, Disconnecting and Connecting.

- Remove the headliner. Refer to → Chapter "Headliner, Removing and Installing".

- Remove the bolt -arrow- for the head curtain airbag strap from the A-pillar.

- Unclip the clips -1- from the A-pillar.

- Unclip the head curtain airbag clips from the body using Clip Pliers -VAS211001-.

- Do this by guiding the plier tips into the openings, press the clip catches -1- for the head curtain airbag together and remove the clip.

  WARNING

Risk of injury due to involuntary deployment.

Before handling pyrotechnic components (For example, disconnecting the connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.

- Release the connector lock -A- with a small screwdriver.

- Remove the connector -1-.

- Remove the bolt -2-.

- Push the head curtain airbag -3- out of the mounts on the body -arrows- toward the rear and remove it.

Installing

  WARNING

Risk of injury due to involuntary deployment.

• Pay attention to the safety precautions when working with pyrotechnic components. Refer to → Chapter "Safety Precautions when Working with Pyrotechnic Components".
• Always follow the head curtain airbag installation procedure.
• Before handling pyrotechnic components (For example, connecting a connector), the person handling it must "discharge static electricity". For example, this can be done by briefly touching the door striker.

Further installation is performed in reverse order of removal, while noting the following:

  Note

• Make sure the connectors are pushed in all the way and that they engage audibly.
• Make sure the wires are not pinched.

- Make sure the "colored strip" is visible along the entire length. This will ensure that the head curtain airbag is NOT twisted.

  WARNING

Repairing pyrotechnic components (For example the airbag and seat belt tensioner) incorrectly increases the risk of injuries due to unintentional deployments when the battery is connected.

• The ignition must be on when connecting the battery.
• Make sure that no one is inside the vehicle at the time when the battery is connected.

- Connect the battery ground cable with the ignition switched on. Refer to → Electrical Equipment; Rep. Gr.27; Battery; Battery, Disconnecting and Connecting.

  Note

If the Airbag Indicator Lamp -K75- indicates a fault, check the DTC memory, erase it and check it again using the Vehicle Diagnostic Tester.

Installation instructions: For example tightening specifications, replacing components. Refer to → Chapter "Overview - Head Curtain Airbag".

READ NEXT: