Checking fuel gauge senderG: Audi Q7 (AEH, AFB, AFN, AGN, …)

🧭 Before you start

Fits: Audi Q7 (4M, 2015–)

Don't miss

• The front passenger's seat does not have to be unbolted.
• Disregard (item 2).

🔧 Engine codes this applies to

📋 Procedure

1. Move front seats all the way up and forwards.
2. Remove sill panel trim (right-side, front and rear) General body repairs, interior70Passenger compartment trim panels; Removing and installing sill panel trim.
3. Remove seat bench/individual seats (right-side and centre) and, if fitted, remove 3rd row seat bench General body repairs, interior72Rear seats; Removing and installing seat bench/individual seats.
4. Remove support (right-side) for luggage compartment floor General body repairs, interior70Luggage compartment trim panels; Exploded view - luggage compartment floor.
5. On front passenger's seat, remove cover (rear) (1) for both seat rails; to do so, carefully release retaining tabs (3, 4 and 5) on seat rail (2) with a screwdriver. [Note: The front passenger's seat does not have to be unbolted.]

6. Pull out floor covering beneath seat rail.
7. Remove covers and connector point for seat bench/individual seats from floor covering.
8. Fold floor covering to one side in vicinity of cover for fuel tank flange.
9. Unscrew bolts (1, 2 and 3) and remove cover for fuel tank flange.
10. Release catches (arrows) with a screwdriver and detach fuel pump control unit J538(item 1) from bracket.
11. Release retainer catch and unplug electrical connector (2) for fuel pump control unit J538.
12. Release catch (2) with a screwdriver and turn bracket (1) for fuel pump control unit J538 anti-clockwise (arrow).
13. Disengage bracket at locking ring and detach it.
14. Release retainer catch and unplug electrical connector (1) on flange. [Note: Disregard (item 2).] [Note: To obtain an exact measurement of the resistance value for the specification "“Tank full”", the fuel tank must be completely full. For this, drive for at least 500 metres after filling the tank to let air bubbles escape from the fuel tank; then add fuel again.]
15. Connect multimeter (resistance test) as shown in table. [Note: To test the maximum and minimum resistance values for "“tank full”" and "“tank empty”", remove the fuel delivery unit and move the sender float all the way to its top or bottom position.The following values are obtained with the fuel gauge senderG removed, due to the greater travel of the float arm:]
16. Connect multimeter (resistance test) as shown in table.
17. Install fuel gauge senderG.

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