Removal and installation SRS components (Opel Astra G)

Before servicing any SRS components, read the safety precautions (see Supplemental Restraint System (SRS) - General Information!

Front driver airbag

The front driver's airbag is built into the steering wheel hub and is located below the horn activation button.

1. Disable SRS (see Vehicle Speed Sensor (VSS) - General Information).

2. Set the front wheels to the straight-ahead position. Remove the key from the ignition and lock the column.

3. Remove the two mounting screws at the rear of the steering wheel and carefully remove the airbag module assembly with the horn button trim.

4. Disconnect the electrical wiring from the airbag module. Store the removed module in a safe place and place it face up.

When carrying the module, hold it with the faceplate away from you!

5. Installation is carried out in the reverse order. Do not forget to restore the original wiring connection, make sure that the mounting screws are tightened with the required force.

Front passenger airbag

The passenger airbag is attached to the crossbar under the vehicle's instrument panel.

1. Disable SRS (see Vehicle Speed Sensor (VSS) - General Information).

2. Remove the glove box (see Chapter Body).

3. Using a TORX key, loosen the mounting bolts and remove the airbag module from the support bracket on the crossmember.



4. Disconnect the wiring and remove the module from the vehicle - note that the underside of the unit is machined to fit into the bracket holes.



5. Installation is carried out in the reverse order. Make sure that the mounting bolts are tightened to the required force.

Side airbags

Side airbags are mounted on the outer sides of the front seat backs.

1. Disable SRS (see Vehicle Speed Sensor (VSS) - General Information).



2. Release the fasteners and remove the side decorative trim from the seat back.

3. Disconnect the electrical wiring from the module.

4. Loosen the three mounting nuts and remove the cushion from the seat back

Manufacturers recommend replacing the self-locking nuts that secure the airbag modules without fail.

5. Installation is carried out in the reverse order. Correctly connect the wiring and tighten the nuts to the prescribed torques.

Airbag contact drum on steering column

1. Remove the driver's airbag module (see above).

2. Remove the steering wheel (see Chapter Suspension and steering). Make sure the front wheels of the vehicle are in the straight-ahead position, the ignition key is removed from the lock and the steering column is locked.

3. Remove the mounting screws and remove the upper and lower sections of the steering column cover (see Chapter Suspension and steering). Remove the cover with the key position identification marking from the ignition switch.

4. Using a small screwdriver, release the retainer and latch and disconnect the wiring connector from the back of the contact block.

5. Release the four rear fasteners and remove the contact block from the top of the steering column.

Make sure that both halves of the contact block remain in the central position with the arrows facing down - secure them with tape if necessary.

6. Before installing a new contact drum, or an old one with a disturbed centering, press the upper lock and carefully rotate the upper part of the block counterclockwise until you feel resistance. Now turn the block 2.5 turns clockwise and achieve alignment of the arrows on the central section and the outer edge. When installing a new block, first remove the transport fasteners.

7. Install the contact drum on the steering column, making sure that the guide pins are correctly positioned in the holes in the steering column. Press the unit until the locks click into place.

Be extremely careful - if the fasteners are damaged, the unit must be replaced as a whole!

8. Restore the original wiring connection and secure the connector with the lock.

9. Install the ignition switch cover with the key position identification marking. Install the steering column cover sections and securely tighten the screws (see Chapter Suspension and steering).

10. Install the steering wheel (see Chapter Suspension and steering).

11. Install the airbag (see above).

Electronic control unit

1. Turn off the system (see Vehicle Speed Sensor (VSS) - General Information).

2. Remove the center console (see Chapter Body). On zafira models also remove the gear shift lever assembly (see Chapter Manual gearbox), - the control unit is located under the lever.



3. Disconnect the wiring from the unit, loosen the mounting nuts and remove the unit from the car - note that the arrow on top of the unit should point forward along the car (due to the asymmetrical arrangement of the fasteners, the block has a unique installation position).





4. Installation is carried out in the reverse order. Make sure that the fasteners are tightened with the required force.

When installing a new control unit, it must be programmed in an Opel branded car service workshop.

Door shock sensors

The sensors are installed inside the front doors.

1. Turn off the system (see Vehicle Speed Sensor (VSS) - General Information).

2. Remove the inner door trim panel (see Chapter Body).

3. To provide access to the sensor, bend back the plastic insulating membrane.

4. Remove the mounting screws and remove the sensor from the support bracket. Disconnect the electrical wiring.

5. Installation is carried out in the reverse order. Make sure that the fasteners are tightened securely.

Front passenger seat occupancy sensor

The sensor is built into the seat cover. The replacement procedure should be entrusted to car service specialists.