If you notice a noise on your car, you are right to be careful of it and take it seriously, although it is conceivable that nothing significant will happen, it is also conceivable that it is the signal of a more important fix. A noise that occurs in the trunk of your Mercedes Classe A 4 is thankfully more a signal of a small adjustment or restoration, rather than a difficult one. To help you in your research, we have chosen to write this content to present you with the most likely solutions to your problem. First we will see that this trunk noise on your Mercedes Classe A 4 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 Mercedes Classe A 4 : Accumulated dirt that triggers poor closing
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We will therefore start with a trunk noise on your Mercedes Classe A 4 generated by dirt accumulated on your joints, lock for example. In fact, it is conceivable that on a car 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 verify if you are in this condition, open the trunk of your Mercedes Classe A 4, check the condition 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 conceivable however that you have a trunk noise on your Mercedes Classe A 4 that is related to other sources such as shock absorbers, do not hesitate to consult this content on the noises at the back of a Mercedes Classe A 4.
Noise in the trunk of my Mercedes Classe A 4 : Loose lock, clicking noise
Second possibility, you may also, over time, be the victim of a locking system that has taken up some play. And this is one of the most probably alternatives. In fact, knowing a trunk noise on your Mercedes Classe A 4 is very often related to this problem. Some solutions are available to you subject to the level of play you have with your lock. The first is that quite often the offset is minimal and a simple greasing of the mechanism with thick grease is enough to fix the issue. Secondly, it is also conceivable that you really have a lot of play on your lock and that each time the trunk “jumps”, in which case you would have to take out the cover that enables access to the lock (inside the trunk). Then, using torx screws, you unscrew the striker attached to the threshold, just push it back a little towards the inside of the trunk and tighten it again. You should verify the centering of the striker in connection with the trunk lock. If after checking the trunk of your Mercedes Classe A 4 closes badly, it means that you have moved it too far, duplicate the procedure by pushing the striker less.
Noise in my trunk Mercedes Classe A 4 : Rivet following plate swap in the trunk/ bumper
Finally, one of the last possibilities. It is that following a license plate swap you were unfortunate and that a piece of rivet fell backside your plate. In fact, when a plate swap is done, to take out the old one the strategy used is to drill the existing rivets in order to release 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 generate an annoying noise. To check that it is this problem you are experiencing, and that you have a trunk noise on your Mercedes Classe A 4 linked to a rivet, you will need to verify that it is in the tailgate open it and stir it to specify the noise. If this is your case, you will have to remove the linings from the trunk to remove it. Finally, if it is your bumper, it is in this rarer and more problematic case, you will have to take out the bumper to remove the bits of rivet that are running around.
