Seat Position Sensor, Removing And Installing

WARNING: This page is about a different car, the 2023 Audi SQ8, 2023 Audi RS Q8, and 2023 Audi Q8. However, it is still accessible from the selected car via links, so may be relevant.

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

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

Special tools and workshop equipment required

Gauge - Gap Adjustment:3371 or

Fig 1: Gap Adjustment Gauge (3371)
Courtesy of AUDI
Gauge - Eos Roof:VAS 6448

Fig 2: Gauge - Eos Roof
Courtesy of AUDI

Removing

-- Disconnect the modular wiring routing. Refer to SEAT PAN, DISASSEMBLING AND ASSEMBLING .

-- 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 it up.

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

-- Remove the bolt -2-, unclip the seat position sensor -1- from the seat pan lower frame -3- and disengage it -arrow-.

Courtesy of AUDI

-- Free up, release and disconnect the connector -3- to the seat belt latch.

Courtesy of AUDI

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

Front Passenger Seat

Courtesy of AUDI

-- Release and disconnect the connector -2- on the Front Passenger Occupant Detection Sensor -G128- -1-.

Installing and Adjusting

Courtesy of AUDI

-- Hook the bracket -2- into the upper seat rail and clip it in.

-- Slide the seat position sensor -4- on the bracket and position at a distance -a- = 4.0 mm to the lower seat rail -1-.

-- To do this, place the Gauge 4 mm between the seat position sensor and the lower seat rail and tighten the bolt -3-.

Further installation is performed in reverse order of the removal.

Check the seat position sensor with the Vehicle Diagnostic Tester.

-- Check and erase the airbag control module DTC memory because faults can be stored from when the connectors are disconnected. Use the Vehicle Diagnostic Tester.

Tightening Specifications

Refer to OVERVIEW - SEAT POSITION SENSOR