Audi A4: Front Passenger Airbag

Overview - Front Passenger Airbag

1 - Connector

• For Front Passenger Airbag Igniter 2 -N132-

2 - Connector

• For Front Passenger Airbag Release Valve Igniter -N491-

3 - Bolts

• 8 Nm
• Replace after removing

4 - Dual-Stage Front Passenger Airbag

• With

• Front Passenger Airbag Igniter 1 -N131-
• Front Passenger Airbag Igniter 2 -N132-
• Front Passenger Airbag Release Valve Igniter -N491-

  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".

• Deactivating and activating possible using the key switch
• Removing and installing. Refer to → Chapter "Front Passenger Airbag Unit with Igniter, Removing and Installing".

5 - Single-Stage Front Passenger Airbag

• With

• Front Passenger Airbag Igniter 1 -N131-
• Front Passenger Airbag Release Valve Igniter -N491-

  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".

• Deactivating and activating possible using the key switch
• Removing and installing. Refer to → Chapter "Front Passenger Airbag Unit with Igniter, Removing and Installing".

6 - Instrument Panel

• Replace the instrument panel after an airbag has deployed. Refer to → Chapter "Instrument Panel, Removing and Installing".

7 - Bolts

• 8 Nm
• Replace after removing

8 - Connector

• For Front Passenger Airbag Igniter 1 -N131-

Front Passenger Airbag Unit with Igniter, Removing and Installing

  Caution

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

Mandatory Replacement Parts

• Bolt - Dual-Stage Front Passenger Airbag to Instrument Panel
• Bolt - Single-Stage Front Passenger Airbag to Instrument Panel

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 glove compartment. Refer to → Chapter "Glove Compartment, Removing and Installing".

- Remove the mount for the Information Electronics Control Module 1 -J794-. Refer to → Communication; Rep. Gr.91; Infotainment System; Component Location Overview - Infotainment System.

- Remove front passenger side instrument panel vent. Refer to → Chapter "Passenger Side Instrument Panel Vent, Removing and Installing".

- Remove the air duct to the right instrument panel vent and to the wide vent. Refer to → Heating, Ventilation and Air Conditioning; Rep. Gr.87; Air Duct; Overview - Passenger Compartment Air Ducts and Air Distribution.

  WARNING

Pay attention to the allocation of the airbag to the instrument panel.

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.

- Disconnect the connectors -1, 2 and 3- on the Front Passenger Airbag Igniter 1 -N131-, Front Passenger Airbag Igniter 2 -N132- and Front Passenger Airbag Release Valve Igniter -N491-.

  Note

Secure the airbag from falling.

- Remove the bolts -1 and 3-.

- Remove the airbag -2- downward.

  WARNING

Risk of injury due to involuntary deployment.

Lay airbag unit so that the padding faces upward.

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".
• 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.

Install in reverse order of removal and note the following:

- Connect the connector -1- to the airbag igniter in the direction of -arrow A-.

- Press in the connector lock -2- in the direction of -arrow B-. While doing this, the connector is pushed into the airbag igniter and locks into place.

  Note

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

  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 after installing, check the DTC memory, erase it and check it again using the Vehicle Diagnostic Tester.

Information for installation: For example, tightening specifications, replacing body parts. Refer to → Chapter "Overview - Front Passenger Airbag" and → Chapter "Overview - Instrument Panel".

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