Removing and installing hydraulic fluid cooler (all vehicles except V12 TDI engine) — AUDI

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

• Opens: power steering fluid
• Special tools named: 3094

🔩 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. On vehicles with air suspension, activate "“jacking mode”".
2. Remove noise insulation (front only) (1).
3. From model year 2010 onwards, remove front bumper General body repairs, exterior63.
4. Remove radiator cowl with radiator fans Engine, mechanics19.
5. Remove bolt (arrow) on both sides Engine, mechanics19.

6. Detach radiator (A) from lock carrier (C) and pivot radiator as far as possible towards rear with coolant hoses connected (just disengage and tilt radiator; do not remove completely and do not open coolant circuit) Engine, mechanics19. Take care not to damage any part of the vehicle.
7. Clamp off hydraulic lines (1) and (2) with hose clamps up to 25 mm ∅3094.
8. Disconnect hydraulic lines (1) and (2) at hydraulic fluid cooler.
9. Remove bolt (2) on rear of cooler.
10. Disengage hydraulic fluid cooler (1) from A/C condenser (front). [Note: The hydraulic fluid in the entire system must be changed if the hydraulic fluid cooler is renewed.Secure all hose connections with the correct type of hose clips (same as original equipment) Electronic parts catalogue.Clean off fluid in engine compartment where necessary.]
11. Tighten bolt on rear of cooler to 9 Nm. — 9 Nm (6.6 lb-ft)
12. Fill up with hydraulic fluid and check hydraulic fluid level .
13. Bleed steering system .
14. Vehicles with air suspension: set down vehicle on its wheels .

Other AUDI procedures

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• Removing engine – Audi A8 D3 · 41 torque figures
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• Removing and installing coolant pipe (rear) - engine code letters BDG, BDH
• Removing and installing control unit for gas discharge lamp - vehicles from approx. 09.2001
• Removing and installing adapter cable for gas discharge lamp control unit
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