Audi A4: Seat Position Sensor

Overview - Seat Position Sensor

  Note

The front passenger side is shown.

1 - Connector Coupling

• Connector station in the underbody under the seat.

2 - Bolt

• 1.2 Nm

3 - Front Passenger Occupant Detection Sensor -G128-

• Only the front passenger side
• Removing and installing. Refer to → Chapter "Front Passenger Occupant Detection Sensor -G128-, Removing and Installing".
• Push the clips into the seat pan until they click into place.

4 - Passenger Occupant Detection Sensor Bracket

• Clipped in the seat frame.
• Removing and installing. Refer to → Chapter "Front Passenger Occupant Detection Sensor -G128-, Removing and Installing".

5 - Wiring Harness

• Clipped in the seat frame.

6 - Connector Coupling

• For the seat belt latch

7 - Seat Rail

• Tunnel-side

8 - Seat Position Sensor

• Driver Seat Position Sensor -G553-
• Front Passenger Seat Position Sensor -G554-

• Removing and installing. Refer to → Chapter "Seat Position Sensor, Removing and Installing".

9 - Bolt

• 1.6 Nm

10 - Connector Coupling

• For the Passenger Occupant Detection System Control Module -J706-
• Only the front passenger side

11 - Passenger Occupant Detection System Control Module -J706-

• Market-Specific Version

  Caution

Risk of malfunction.

Never disconnect the connector between the Front Passenger Occupant Detection Sensor -G128- and the Passenger Occupant Detection System Control Module -J706-.

• Clipped in the storage compartment.

Seat Position Sensor, Removing and Installing

The seat position sensor is available as a replacement part with the wiring harness and connector. The following wires with connectors are contained in the wiring harness:

• Driver Seat Position Sensor -G553-: wire with connector for seat belt latch connection.
• Front Passenger Seat Position Sensor -G554-: wire with connector for seat belt latch connection, passenger occupant detection sensor and passenger occupant detection system control module (market-specific).

Removing

- Disconnect the modular wiring routing. Refer to → Chapter "Modular Wiring Routing, Disconnecting and Connecting".

- Open the corrugated tube, remove the wire for the Driver Seat Position Sensor -G553-/ Front Passenger Seat Position Sensor -G554- with the connector and free up.

- Remove the bolt -2-.

- Unclip and disengage the seat position sensor -1- for the seat pan lower frame -3--arrow-.

- Remove the cable ties or cable clips for the wire on the seat pan lower frame.

Driver Seat

- Free up the connector -3- for the seat belt latch and disconnect.

- Remove the seat position sensor -1- with the wire -2-.

Front Passenger Seat

- Free up the connector -1- for the seat belt latch and disconnect.

- Disconnect the connector -3- on the Front Passenger Occupant Detection Sensor -G128-.

- Remove the seat position sensor -4- with the wire -2-.

Installing

Install in reverse order of removal.

Installation instructions: For example tightening specifications, replacing components. Refer to → Chapter "Overview - Seat Position Sensor".

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