If you detect a noise on your vehicle, you are right to be attentive of it and take it seriously, although it is conceivable that nothing significant will occur, it is also conceivable that it is the indication of a more significant fix. A noise that comes out in the trunk of your Mercedes A class is thankfully more a indicator of a small adjustment or restoration, rather than a difficult one. To support you in your research, we have decided to write this content page to present you with the most likely solutions to your problem. First we will see that this trunk noise on your Mercedes A class 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 A class : Built up dirt that triggers poor closing
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We will therefore start with a trunk noise on your Mercedes A class created by dirt accumulated on your joints, lock for example. Indeed, it is conceivable that on a vehicle that is already a few years old and whose cleaning is not always a main concern 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 examine if you are in this scenario, open the trunk of your Mercedes A class, verify the state of the gasket that goes 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 impact. 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 A class that is related to other sources such as shock absorbers, do not hesitate to consult this content page on the noises at the back of a Mercedes A class.
Noise in the trunk of my Mercedes A class : 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 likely possibilities. Indeed, knowing a trunk noise on your Mercedes A class is very frequently related to this problem. Some solutions are existing to you subject to the level of play you have with your lock. The first is that oftentimes the offset is minimal and a simple greasing of the mechanism with thick grease is more than enough to resolve 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 off the cover that allows 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 examine the centering of the striker in relation to the trunk lock. If after verifying the trunk of your Mercedes A class closes badly, it means that you have moved it too far, replicate the process by pushing the striker less.
Noise in my trunk Mercedes A class : Rivet following plate change in the trunk/ bumper
Finally, one of the last possibilities. It is that following a license plate change you were unfortunate and that a piece of rivet fell at the rear of your plate. Indeed, when a plate swap is done, to take out the old one the technique used is to drill the existing rivets to be able to released the license plate. Sadly, 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 cause an annoying noise. To check that it is this problem you are experiencing, and that you have a trunk noise on your Mercedes A class linked to a rivet, you will need to examine that it is in the tailgate open it and stir it to identify the noise. If this is your case, 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 disturbing case, you will have to take out the bumper to remove the bits of rivet that are running around.
