I just installed the Alpine HCE-252RD backup camera using the KIT-R1AU installation kit in my 2014 Audi A4 B8.5 Premium Plus S-Line. The instructions that come with the camera and the installation kit are pretty vague so I'm here to fill in the blanks. I normally like to take photos and post them for things like this, but I got lazy and just didn't do it this time. Instead, I have provided links to the B8 A4 ETKA that shows the location of each part called out in the steps. Open them up in separate tabs and it should be easy to locate the parts as they are called out.
1. Remove the rear license plate from the vehicle.
Figure 1:
https://audi.7zap.com/en/usa/audi+a4.../8/827-827000/
2. Remove the two Torx screws (Figure 1, items 28) securing the license plate trim (Figure 1, item 27) to the rear panel of the car. The license plate trim is attached with double-sided tape (Figure 1, items 26) so you'll need to gently pry it loose to remove it. You will not be able to install the mounting kit with the camera if the license plate trim is installed.
3. Open the trunk lid.
4. Pry off the two long rubber stops (Figure 1, items 13A) at each end of the trunk lid liner.
5. Remove the cover (Figure 1, item 16) from the trunk lid latch (Figure 1, item 14).
Figure 2:
https://audi.7zap.com/en/usa/audi+a4.../8/867-867090/
6. Remove the cover cap (Figure 2, item 11) from the inside emergency trunk latch handle (Figure 2, item 10) located on the inside of the trunk lid on the driver's side and disconnect the ball from the end of the cable. Pop the emergency trunk latch handle (Figure 2, item 10) out of the socket that retains it.
7. Remove the two Torx screws (Figure 2, items 8) securing the trunk lid liner. One screw is located inside the area where the emergency trunk latch lever was mounted. The other screw is located inside the handhold on the other side of the trunk lid liner.
8. Pry open the two panels at each end of the trunk lid liner behind the tail lights.
9. Pop the trunk lid liner fasteners (Figure 2, items 2) securing the liner to free the liner from the trunk lid. There are four fasteners along the top edge of the liner, four along the bottom edge, one at each side just inside the two access panels, and one on the driver's side along the left side of the liner. I didn't actually count them, but I'm looking at the ETKA parts list for my 2014 A4 and they show eleven clips. All of the clips are on the outer edge of the liner so you shouldn't have any problem locating all of them.
10. Detach the emergency trunk latch lever cable holder from the clip on the back side of the liner and remove the liner.
11. Look up inside the trunk lid at the rear of the trunk latch assembly (Figure 1, item 20) and you'll see the cable connected to the back of the trunk latch release switch. Push the small tab towards the driver's side and disconnect the cable.
12. Use a 10mm socket wrench and remove the two nuts (Figure 1, items 21) securing the rear of the trunk latch release switch to the metal bracket (Figure 1, item 22).
13. Remove two 10mm bolts (Figure 1, items 23) securing the metal bracket (Figure 1, item 22) to the inside of the trunk lid. There's a cable attached to the bracket so carefully move the bracket out of the way to allow access to the trunk latch release switch.
14. There are tabs on each side of the trunk latch release switch (Figure 1, item 20). Push in on one of the tabs and apply firm pressure to break the seal on the release switch assembly. Once it has broken free, push in on the remaining tab and remove the trunk latch release switch.
15. Assemble the camera and the KIT-R1AU per the supplied instructions.
16. Insert the camera and the new trunk latch release switch assembly into the opening.
17. Position the switch bracket (Figure 1, item 22) inside of the trunk lid (Figure 1, item 1) . Insert the camera cable through the round opening in the switch bracket and position the bracket inside the trunk lid so that the two threaded studs on the rear of the trunk latch switch assembly protrude through the holes in the bracket.
18. Thread the two nuts (Figure 1, items 21) onto the studs on the rear of the trunk latch release switch, but do not tighten them.
19. Line up the holes in the bracket with the trunk lid and install the two bolts (Figure 1, items 23) to secure the bracket.
20. Tighten the bolts (Figure 1, items 23) securing the bracket (Figure 1, items 22) and then tighten the two nuts (Figure 1, items 21) securing the latch release switch (Figure 1, item 20) to the bracket. Do not overtighten the two nuts or you could damage the switch housing.
21. Reconnect the cable to the rear of the trunk release switch. At this point you should be able to operate the trunk release switch and hear the switch actuate.
22. Remove the cover (Figure 1, item 32) on the passenger's side trunk hinge (Figure 1, item 2). There are tabs on the underside of the cover that hold it in place. Just press in on the tab and release it from the other side of the cover. Remove the cover.
23. Open the access panel on the inside of the trunk on the passenger's side.
24. Attach the camera cable to the cable harness from the backup camera. Route the cable along the existing wiring harness and down through the opening for the trunk hinge. I wrapped electrical tape around the camera harness and the existing harness to secure the camera harness.
25. This is as far as I got with the camera installation. I don't have time to route the cable to the front of the car at this time so it's a good place to stop. Bundle up the camera cable and place it inside the access panel opening. Close the access panel.
26. Replace the cover (Figure 1, item 32) on the trunk lid hinge (Figure 1, item 2) and make sure the tabs are all securely latched.
27. Position the trunk lid liner on the inside of the trunk lid and secure the lower edge starting with the the two clips (Figure 2, items 2) in the middle followed by the two outer clips. The holds the liner in place and keeps it aligned for the next step.
28. Insert the emergency trunk latch release cable into the holder on the inside of the trunk lid liner. It's a bit tricky so be patient. I found that inserting the cable keeper in the bracket first and then working the ball through the hole works pretty well.
29. Secure the trunk lid liner with the remaining clips (Figure 2, items 2). Make sure the liner is properly positioned over the two rubber stop buffers (Figure 1, items 12) on the inside of the trunk lid as well as the latch assembly (Figure 1, item 14).
30. Install the two Torx screws (Figure 2, items 2) securing the trunk lid liner (Figure 2, item 1).
31. Reattach the emergency trunk latch release handle (Figure 2, item 10) to the cable ball and snap the handle into the holder. Reinstall the cover cap (Figure 2, item 11).
32. Close the two access panels on each side of the trunk lid liner and close the trunk lid.
33. Reinstall the license plate trim (Figure 1, item 27) and secure with two Torx screws (Figure 1, items 28).
34. Reinstall the rear license plate.
I may document the process to route the cable to the front of the car when I find the time to do so. The instructions show it routed through the headliner, but the cable appears long enough to route it just about anywhere you like. I plan on installing speaker wires inside the channels along the running boards so I will probably run the camera cable in the same fashion.
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Originally Posted by prkieffer
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