Removing and installing fuel gauge sender 3G237 (tubular sender, left-side) — AUDI

🧭 Before you start

Fits: Audi A8 D3 (4E, 2002–2010)

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• For removing and installing tubular sender, take tool kit and spare wheel out of luggage compartment. You can then sit or kneel in the spare wheel well.
• Keep in mind that the fuel gauge sender 3G237 still contains fuel.
• Pull both retaining clips on retainer upwards (arrows) so that they engage audibly before installing the fuel delivery unit.
• Install new seal for flange (seal must be installed dry).

🔧 Engine codes this applies to

📐 20 workshop diagrams for ASB

Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.

📋 Procedure

1. ⚠ Observe notes on procedure for disconnecting the battery. — With ignition switched off, disconnect battery earth cable (arrow)Electrical system27.
2. Briefly open filler cap for fuel tank and close again.
3. Remove luggage compartment floor covering. [Note: For removing and installing tubular sender, take tool kit and spare wheel out of luggage compartment. You can then sit or kneel in the spare wheel well.]
4. Detach cover for flange (left-side) (arrows).
5. Unplug electrical connectors (1) and (2) on flange (left-side).

6. Unscrew locking ring using wrench T10202.
7. Detach flange and remove seal.
8. Unplug electrical connectors (1 ... 3) on underside of flange (left-side).
9. Working through left fuel tank opening, press release tabs (arrows) and detach fuel supply line (2) and fuel gauge sender 3G237(item 1).
10. Move fuel gauge sender 3G237 to left side.
11. Press down both retaining clips on retainer for fuel delivery unit (arrows).
12. Pull fuel delivery unit slightly upwards and at the same time take out fuel gauge sender 3G237. [Note: Keep in mind that the fuel gauge sender 3G237 still contains fuel.]
13. Pull both retaining clips on retainer upwards (arrows) so that they engage audibly before installing the fuel delivery unit.
14. Pull fuel delivery unit up slightly and insert fuel gauge sender 3G237.
15. Then press fuel delivery unit carefully into retainer so that it engages audibly.
16. Fit fuel supply line (2) and fuel gauge sender 3G237(item 1) so that they engage audibly.
17. Connect electrical connectors (1 ... 3) on underside of flange (left-side).
18. Install new seal for flange (seal must be installed dry).
19. Fit flange into fuel tank; note correct installation position:
20. Tighten locking ring.
21. Attach electrical connectors (1) and (2) on flange (left-side).
22. Secure cover for flange (left-side) (arrows).
23. Connect battery. Observe notes on procedures required after connecting battery Electrical system27.

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