A8L Quattro Sedan W12-6.0L (BSB) (2005)
Terminal assignment of 4-pin harness connector at Fuel Level Sensor 3 G237
1. Switched-positive connection of electric fuel pump
2. Wiring between fuel gauge sender and dash panel insert (fuel gauge)
3. Fuel gauge sender ground (sensor ground)
4. Electric fuel pump ground
Right fuel gauge senders
Fuel Level Sensor 2 G169 and Fuel Level Sensor 4 G393are accessible at front right of luggage compartment.
Procedure
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Remove luggage compartment floor lining.
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Remove cover for right sealing flange - arrows - .
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Carefully release and unplug connectors - 1 - and - 2 - at left sealing flange.