Removing and installing passive tank for reducing agent: Audi Q7 (CAMA, CAMB, CAPA, CATA, …)

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

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• Risk of accident caused by weight of passive tank.When removing passive tank, support it with engine and gearbox jackV.A.G 1383 A. — Position engine and gearbox jackV.A.G 1383 A below vehicle to support passive tank.
• For greater clarity the passive tank is shown without the engine and gearbox jack.
• Lay a clean cloth under the separating point to catch escaping reducing agent.Seal off open lines and connections with clean plugs.

🔧 Engine codes this applies to

📋 Procedure

1. ⚠ Safety risk due to escaping reducing agent.To prevent large amounts of reducing agent from escaping when the metering line is opened, wait until the reducing agent has been drawn back automatically . — Drain active tank for reducing agent .
2. Activate jacking mode on vehicles with air suspension 43.
3. Unscrew bolts from underbody trim panel (centre left) in area of passive tank 66.
4. ⚠ Risk of accident caused by weight of passive tank.When removing passive tank, support it with engine and gearbox jackV.A.G 1383 A. — Position engine and gearbox jackV.A.G 1383 A below vehicle to support passive tank.
5. Remove bolts (1, 2 and 4). [Note: For greater clarity the passive tank is shown without the engine and gearbox jack.]

6. Then lower passive tank (3) approx. 100 mm using engine and gearbox jackV.A.G 1383 A, simultaneously guiding passive tank down by hand. [Note: Lay a clean cloth under the separating point to catch escaping reducing agent.Seal off open lines and connections with clean plugs.]
7. ⚠ Reducing agent can cause skin irritation.Avoid contact with the skin and eyes. Wear gloves and safety goggles.If your skin has come into contact with reducing agent, rinse it off with soap and water.If reducing agent gets into your eyes, rinse them out with water for several minutes.Do not breathe in or swallow reducing agent.If you have swallowed reducing agent, rinse your mouth, drink lots of water and consult a paramedic or doctor immediately. — Unclip transfer line (2) at bracket (arrow) and detach it from transfer pump for reducing agent V436 (press release tab).
8. Unplug electrical connector (1) and move electrical wire clear. [Note: Lay a clean cloth under the separating point to catch escaping reducing agent.Seal off open lines and connections with clean plugs.]
9. Press release tab and disconnect filler line (1) and breather line (2).
10. Then lower passive tank using engine and gearbox jackV.A.G 1383 A, simultaneously guiding passive tank down by hand.
11. Install underbody trim panel (centre left) 66.
12. Check that lines are clipped onto passive tank.
13. Adapt learnt value after draining reducing agent or renewing components .

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