Removing and installing auxiliary cooler for exhaust gas recirculation — AUDI

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

• Opens: coolant
• Renewed: gaskets

Don't miss

• Disregard (items 3, 4).
• Renew gaskets and O-rings.

🔧 Engine codes this applies to

📐 18 workshop diagrams for CATA

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

📋 Procedure

1. Drain coolant .
2. Remove bolt (arrow) at bracket for starter catalytic converter.
3. Carefully pull engine cover panel off four retaining pins one after the other (arrows).
4. Unscrew bolts (1) and (2) and detach heat shield for turbocharger.
5. Remove nuts (arrows).

6. Detach starter catalytic converter from turbocharger and push towards rear.
7. Remove bolts (1) and (2). [Note: Disregard (items 3, 4).]
8. Remove bolts (1) and (2) and detach coolant pipe (rear) from auxiliary cooler for exhaust gas recirculation. [Note: Disregard (items 3, 4).]
9. Detach vacuum hose (1) from vacuum unit and exhaust gas recirculation cooler changeover valve 2N381(item 3) from bracket.
10. Remove bolt (2) and detach coolant pipe (rear left) from auxiliary cooler for exhaust gas recirculation.
11. Unscrew bolts (arrows) and remove auxiliary cooler for exhaust gas recirculation. [Note: Renew gaskets and O-rings.]
12. Install coolant pipe (rear left) at auxiliary cooler for exhaust gas recirculation .
13. Install coolant pipe (rear) .
14. Install starter catalytic converter .
15. Fill up with coolant .

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