If you acknowledge a noise on your automobile, you are right to be aware of it and take it seriously, although it is plausible that nothing critical will result, it is also plausible that it is the sign of a more significant fix. A noise that comes out in the trunk of your Mercedes Classe B 3 is fortunately more a sign of a small adjustment or restoration, rather than a difficult one. To help 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 Mercedes Classe B 3 can come from accumulated 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 B 3 : Built up dirt that causes poor closing
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We will therefore begin with a trunk noise on your Mercedes Classe B 3 caused by dirt accumulated on your joints, lock for example. Indeed, it is plausible that on a automobile 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 causes 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 B 3, examine 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 difference. If this is not the case, continue to the other hypotheses that will probably give a solution. It is plausible however that you have a trunk noise on your Mercedes Classe B 3 that is relating to other origins such as shock absorbers, do not hesitate to read this article on the noises at the back of a Mercedes Classe B 3.
Noise in the trunk of my Mercedes Classe B 3 : Loose lock, clicking noise
Second possibility, you may also, over time, experience a locking system that became loose. And this is one of the most probably alternatives. Indeed, knowing a trunk noise on your Mercedes Classe B 3 is very frequently relating to this problem. Several solutions are available to you according to the level of play you have with your lock. The first is that occasionally the offset is minimal and a simple greasing of the mechanism with thick grease is sufficient to resolve the problem. Secondly, it is also plausible 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 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. Be sure you verify the centering of the striker in relation to the trunk lock. If after verifying the trunk of your Mercedes Classe B 3 closes badly, it means that you have moved it too far, repeat the process by pushing the striker less.
Noise in my trunk Mercedes Classe B 3 : 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 strategy used is to drill the existing rivets in order 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 create an annoying noise. To check that it is this problem you are experiencing, and that you have a trunk noise on your Mercedes Classe B 3 linked to a rivet, you will need to verify that it is in the tailgate open it and stir it to define 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 disturbing situation, you will have to take out the bumper to remove the bits of rivet that are running around.
