Maintenance of body parts, removal/installation of some covers and panels (Audi Q7-4L-D)

1. Use G 000 115 A2 universal aerosol lubricant to lubricate door hinges and door/hood travel limiters, and G 052 778 A2 aerosol lubricant to lubricate lock cylinders. The lubrication application points are indicated by arrows in the illustrations. The lubricant should be applied at least at room temperature. Before lubricating the door travel limiters, remove the protective cap (1 in illustration 19.1a).



After applying the lubricant, work the affected part several times to ensure the lubricant penetrates deeply, and then remove any excess lubricant.







2. Soundproofing under the engine compartment consists of two panels: the front (3 in the illustration), fastened with bolts (A) and the rear (2), fastened with bolts (B) and held in spring clamps (1).



The rear panel can be pulled out of the spring clips only after removing the front panel and unscrewing the bolts (B). When installing the panels, tighten the bolts to 8 Nm.

3. To remove the right side panel (1 in the illustration) engine compartment, it is necessary to remove the cover (2) and remove its fasteners (arrows).





4. To remove the top cover of the 3.0 TDI engine, pull it with both hands first from the front (1 in the illustration), and then from behind (2).



Do this slowly and evenly, holding the lid straight. The panel should also be secured first at the front (3), and then at the back (4).

5. To remove the top cover of the 4.2 TDI engine, carefully pull it off the four mounting points one by one with your hands (see illustration).



When installing, first position the cover on the mounting points, press it against the rear points, and then against the front points.

6. To remove the air intake chamber cover, first remove the windshield wipers (see Chapter 11) and front lid seal. Release the clamps (1 and 2 in the illustration) on both sides to release the cover from the bulkhead, then pull the cover out of the retaining strip, starting from the windshield wall and lifting slightly.





To facilitate removal/installation, the retaining strip should first be moistened with a medium concentration soap solution. When installing, do not hit the cover, but gently press it into the retaining strip.

7. The radiator is covered at the top with a casing that can be removed upwards (see illustration).



On later models, the lower coolant hose must be released before removing the cover.

Checking and cleaning the air intake chamber

Note: Leaves, pine needles and other debris accumulating in the air intake chamber can disrupt the outflow of water from it during heavy rain or when washing the car, which can lead to water getting into the interior. Therefore, it is necessary to periodically check the patency of the drainage holes of the air intake chamber and, if necessary, clean them.

8. Remove the air intake chamber cover (see paragraph 6).

9. Press the clamps (1 and 2 in the illustration) ECM and pull it forward out of the holder (3).



10. Without disconnecting the electrical wiring, position the ECM as shown in the illustration.



11. Check if there is any dirt in the air intake chamber. Check the drainage holes for cleanliness (1 in the illustrations), looking from top to bottom in the direction of the arrows.







Remove dirt if necessary.

12. Remove large dirt from the air intake chamber and drainage holes (1 in the illustration) flexible gripping tool.



Fine dirt and sediment can be removed, for example, using a thin water hose or the VAG 1538 pressure cleaning gun and the VAG 1538/2 flexible nylon probe.

Cleaning and lubricating panoramic roof parts

13. Before performing any procedures, turn on the ignition and fully open both panoramic roof sunshades. To prevent dirt from falling into the interior, keep a cloth under the appropriate area of the panoramic roof.

14. For cleaning and lubrication you will need special tools VAS6621.

Cleaning and lubricating the guide strips of the front glass panel

15. Open the front glass panel completely.

16. Insert the VAS 6621 tool into the rear of the guide (1 in the illustration), turn 90° (2), move to the middle of the guide opening (3) and turn 90° (4), and then remove the device upwards (5).



Remove any collected dirt and remaining grease from the center of the guide using a lint-free cloth. If necessary, use a vacuum cleaner to remove sand and dust from the guide. Repeat this procedure as many times as necessary.

17. Clean the front part of the guide in the same way (see illustration).



Then clean the back and front of the guide on the other side in the same way.



18. Screw in the VAS 6621 tool (1 in the illustration) into the thread of the container with G060 751A2 grease (2) for the guide in the direction of the arrow, and then insert into the VAG 1628 gun (3).



19. Insert the gun with the VAS 6621 device into the rear end of the guide (1 in the illustration), turn 90° (2) and apply grease up to the front of the guide (3) by applying even pressure on the gun lever.



Then rotate the gun 90° (4) and remove (5). Remove excess grease with a lint-free cloth. Lubricate the second guide in the same way.

Cleaning and lubricating the front and rear glass panel mechanisms

20. Set the front glass panel to "position 1" (the panel is not closed), and lift the back panel. Remove grease and dirt from the glass panel mechanisms using a lint-free cloth.

21. Apply a small amount of G060 751 AZ aerosol lubricant vertically, starting from the top, to the front and rear panel mechanisms only at the points shown in the illustrations.





Remove excess grease with a lint-free cloth. Lubricate the mechanisms on the other side in the same way.

Cleaning and lubricating the rocker guides of the front and rear glass panels

22. Set the front glass panel to "position 1" (the panel is not closed), and lift the back panel. Remove grease and dirt from the cam guide using a lint-free cloth.

23. Press your hand downwards on the rubber edge (1 in the illustration) corresponding rocker guide (2) on the inside of the front glass panel.



Starting vertically from the top, apply a small amount of G060 751 AZ spray lubricant to the front panel rocker guides only at the points shown in the illustration so that the lubricant can penetrate into the roller guide. Remove excess grease with a lint-free cloth. Lubricate the guides on the other side in the same way.

24. Working from the outside, apply G060 751 AZ aerosol lubricant vertically and continuously to the rear panel mechanism from the mark (1 in the illustration) in the direction of the arrow (2) as far as possible to the mark (3).



Remove excess grease with a lint-free cloth. Lubricate the guides on the other side in the same way.

Cleaning and lubricating the sliding cams of the front glass panel

25. Set the front glass panel to "position 1" (the panel is not closed) and remove grease and dirt from the sliding cam using a lint-free cloth.

26. Using a small brush, apply to the bottom of the sliding cam (1 in the illustration) grease G060 751A2.



Remove excess grease with a lint-free cloth and repeat the procedure on the other side.

Cleaning and lubricating the seals of the front and rear glass panels

27. Open the front glass panel completely and lift up the back panel.

28. Remove any remaining grease and dirt from the outer seals (see illustration) and panel seals using isopropyl alcohol and a lint-free cloth.



29. Using a small brush, apply a small amount of Krytox G052 141 A2 grease as far inside and outside the panel seals as possible (see illustrations).





Make sure there are no visible traces of a white film left after lubrication. Remove excess lubricant with a lint-free cloth.