If you find out a noise on your vehicle, you are right to be concerned of it and take it seriously, although it is possible that nothing major will results, it is also possible that it is the signal of a more critical repair. A noise that happens in the trunk of your Audi A3 is thankfully more a signal of a small correction or restoration, rather than a difficult one. To support you in your research, we have decided to write this article to present you with the most likely solutions to your problem. First we will see that this trunk noise on your Audi A3 can come from built up dirt, the problem can also come from a loose lock and finally, it can even come from a simple rivet that sits inside your bumper.
Noise in the trunk Audi A3 : Built up dirt that triggers poor closing
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We will therefore start with a trunk noise on your Audi A3 generated by dirt accumulated on your joints, lock for example. In fact, it is possible that on a vehicle that is already a few years old and whose cleaning is not always a top priority or that the roads used are not very clean that dirt collects at the trunk gasket. This problem triggers a poor closure of the trunk and a noise that can sound like a crack. To check if you are in this condition, open the trunk of your Audi A3, check the state of the gasket that runs around the entire tailgate and clean it with a wet/soap cloth, dry the whole thing and try to close the trunk and take a dentred road to see the difference. If this is not the case, continue to the other hypotheses that will probably give a solution. It is possible however that you have a trunk noise on your Audi A3 that is connected to other sources such as shock absorbers, do not hesitate to have a look to this article on the noises at the back of a Audi A3.
Noise in the trunk of my Audi A3 : Loose lock, clicking noise
Second probability, you may also, over time, be the victim of a locking system that became loose. And this is one of the most potential possibilities. In fact, knowing a trunk noise on your Audi A3 is very often connected to this problem. Several solutions are existing to you according to the level of play you have with your lock. The first is that in some cases the offset is minimal and a simple greasing of the system with thick grease is good enough to resolve the problem. Secondly, it is also possible that you really have a lot of play on your lock and that each time the trunk “jumps”, in which circumstance you would have to remove the cover that allows access to the lock (inside the trunk). Then, using torx screws, you unscrew the striker attached to the threshold, simply push it back a little towards the inside of the trunk and tighten it again. Be sure you check the centering of the striker in connection with the trunk lock. If after examining the trunk of your Audi A3 closes badly, it means that you have moved it too far, replicate the procedure by pushing the striker less.
Noise in my trunk Audi A3 : Rivet following plate swap in the trunk/ bumper
Finally, one of the last possibilities. It is that following a license plate swap you were unlucky and that a piece of rivet fell backside your plate. In fact, when a plate replacement is made, to remove the old one the procedure used is to drill the existing rivets in order to released the license plate. Unfortunately, it can happen that part of the rivet falls into the hole of the bumper and it will therefore wander inside the bumper and can create an annoying noise. To check that it is this problem you are experiencing, and that you have a trunk noise on your Audi A3 linked to a rivet, you will need to check that it is in the tailgate open it and stir it to identify the noise. If this is your situation, you will have to take out the linings from the trunk to remove it. Finally, if it is your bumper, it is in this rarer and more unpleasant situation, you will have to remove the bumper to remove the bits of rivet that are running around.
