Removing and installing pressure differential sender G505 or pressure differential sender 2G524 — AUDI

🧭 Before you start

Fits: Audi Q7 (4L, 2005–2015)

• Special tools named: V.A.G 1383

Don't miss

• Disregard (items 1, 3, 4 and 6).
• Disregard (items 1 and 2).
• Disregard (items 2, 3 and 4).

🔧 Engine codes this applies to

📋 Procedure

1. Activate jacking mode 43.
2. Remove engine cover panel .
3. Release hose clips (2) and (5) and disconnect air hoses. [Note: Disregard (items 1, 3, 4 and 6).]
4. Release fasteners and remove rear noise insulation panel (2).
5. Remove left and right particulate filter 26.

6. Unscrew bolts (arrows) connecting rear propshaft to transfer box.
7. Slide rear propshaft together towards rear final drive; the constant velocity joints can be moved axially.
8. Remove catalytic converter (left-side) 26.
9. Remove front propshaft at transfer box 39.
10. Remove catalytic converter (right-side) 26.
11. Support gearbox by positioning engine and gearbox jack V.A.G 1383 A (with gearbox support T10337 attached) underneath gearbox. [Note: Disregard (items 1 and 2).]
12. ⚠ Risk of accident.Engine and gearbox jackV.A.G 1383 A must remain in position when work is being carried out and must not be left unattended. — Remove bolts (1) securing gearbox carrier. [Note: Disregard (items 2, 3 and 4).]
13. Lower engine and gearbox jackV.A.G 1383 A as far as distance (a).
14. Unplug electrical connector (2) and remove nut (1).
15. If hoses (4) are to be removed from pressure sensor, release hose clips (if fitted) and spray both hoses with silicone-free lubricant.
16. Unplug electrical connector (2) and remove nut (3).
17. If hoses (4) are to be removed from pressure sensor, release hose clips (if fitted) and spray both hoses with silicone-free lubricant.
18. Carefully disconnect the hoses from their connections (take care to keep the hoses straight: the connections on pressure sensor can break off easily). [Note: Blow through hoses (towards particulate filter) with compressed air to remove dirt or ice (frozen condensation).Make sure that hoses are securely fitted and that there are no leaks.If pressure pipe has been released from particulate filter, tighten to 45 Nm.Secure all hose connections with the correct type of hose clips (same as original equipment) Parts catalogue.Fit all cable ties in the original positions when installing.]
19. Install gearbox carrier 34.
20. Install catalytic converter 26.
21. Install front propshaft for transfer box 39.
22. Secure rear propshaft to rear final drive 39.
23. Install particulate filter 26.
24. Install rear noise insulation 66.
25. Deactivate jacking mode 43.

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