Automatic gearbox 09E, four-wheel drive — Removing and installing ATF cooler — AUDI

🧭 Before you start

Fits: Audi A6 C6 (4F, 2004–2011)

Don't miss

• Mark position of all ATF cooling hoses on ATF cooler with different colours to avoid confusion.
• Plug pipe and hose openings quickly to prevent unnecessary drainage of coolant from coolant system.
• Both ATF seals between ATF cooler and gearbox must always be renewed.

🔩 Torque settings

Values can differ between engine variants — check the code stamped on your block.

ℹ️ Always cross-check the exact figure against your vehicle's factory manual before final tightening — a wrong torque can damage the engine. These values are extracted from workshop data and may not cover every variant or revision.

📋 Procedure

1. Undo quick release fasteners (1) and (2) and remove noise insulation panels.
2. Mark position of all ATF cooling hoses on ATF cooler with different colours to avoid confusion.
3. Place used oil collection and extraction unitV.A.G 1782 below gearbox.
4. ⚠ Wear safety goggles. — Clamp off ATF cooling hoses going to ATF cooler using hose clamps up to 25 mm3094.
5. Open hose clips on ATF cooler and detach both coolant hoses.

6. Plug both ATF coolant hoses with clean sealing plugs. [Note: Plug pipe and hose openings quickly to prevent unnecessary drainage of coolant from coolant system.]
7. Remove the three bolts (arrows) and take off ATF cooler (B). [Note: Both ATF seals between ATF cooler and gearbox must always be renewed.]
8. Plug both openings on gearbox with clean sealing plugs.
9. Renew both ATF seals between ATF cooler and gearbox.
10. Lubricate both new ATF seals with ATF and attach to ATF cooler.
11. Attach ATF cooler (B) to gearbox and tighten bolts (arrows) to 10 Nm. — 10 Nm (7.4 lb-ft)
12. Attach ATF cooling hoses to ATF cooler.
13. Check coolant level in cooling system 19.
14. Check and top up ATF level .

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