If you identify a noise on your automobile, you are right to be careful of it and take it seriously, although it is conceivable that nothing major will happen, it is also conceivable that it is the indication of a more critical fix. A noise that shows up in the trunk of your Mercedes Classe C is fortunately more a sign of a small correction 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 issue. First we will see that this trunk noise on your Mercedes Classe C can come from built up dirt, the issue 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 C : Built up dirt that causes poor closing
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We will therefore begin with a trunk noise on your Mercedes Classe C caused by dirt accumulated on your joints, lock for example. Indeed, it is conceivable 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 builds up at the trunk gasket. This issue causes a poor closure of the trunk and a noise that can sound like a crack. To check if you are in this scenario, open the trunk of your Mercedes Classe C, verify 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 conceivable however that you have a trunk noise on your Mercedes Classe C that is linked to other sources such as shock absorbers, do not hesitate to read this content page on the noises at the back of a Mercedes Classe C.
Noise in the trunk of my Mercedes Classe C : 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 possibilities. Indeed, knowing a trunk noise on your Mercedes Classe C is very often linked to this issue. Some 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 system with thick grease is appropriate to eliminate the problem. 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 circumstance you would have to strip off the cover that enables 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. Remember to check the centering of the striker in regards to the trunk lock. If after looking at the trunk of your Mercedes Classe C closes badly, it means that you have moved it too far, duplicate the operation by pushing the striker less.
Noise in my trunk Mercedes Classe C : 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. Indeed, when a plate replacement is done, to remove the old one the procedure used is to drill the existing rivets to be able to put out 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 C linked to a rivet, you will need to check that it is in the tailgate open it and stir it to discern 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 remove the bumper to remove the bits of rivet that are running around.
