It is never pleasant to find out a sound that you don’t know where it comes from. So, what if you identify a gearbox noise that lasts on your Mercedes Classe B? It is most likely to be a minimal concern, but before making sure of that, it is best to conduct a few verifications. Our team has made this content page to support you to correct it. First, we will see what the sources and different gearbox noises can be on Mercedes Classe B, and second, what are the solutions available to you. 
The several noises and their sources
A gearbox / your transmission is the essential element of the transmission, it is linked to the clutch that will release the engine pressure on the gearbox systems. Hearing noises from your Mercedes Classe B’s gearbox is practically never a good sign, its fix is nearly unachievable to conduct due to the lack of professional mecanician and its replacing requires a heavy expense. The advantage is that generally its life expectancy after a first noise is reasonably long, which provides you time to arrange the fix, but it is crucial to examine quickly what is your specific concern.
Your Mercedes Classe B transmission produces noise in neutral
If you encounter a gearbox noise even when you are in neutral, it denotes that the gearbox’s internal mechanisms are already well worn and that you will have to swap it fairly quickly. Indeed, if you are not even with a gear on and it causes sound, the pinions must already be at the end of their life.
You experience a squeaking, a humming noise at the time of the gear shift
If you are unfortunately the subject of squeaks, or humming noises when you switch the gears of your Mercedes Classe B, it is unfortunately a good bet that it is your gears that are starting to fatigued. If this sound is not restricted to passing the first gear and keep going when you drive and shift other gears. This is most likely a sign of a gearbox which is nearly good to be swap. If you have the feeling after checking that the noise comes from the clutch and not the gearbox, we suggest you to have a look at this article in order to find the triggers and solutions to a clutch noise on Mercedes Classe B.
You encounter a whinning or hummin sound from the gearbox of your Mercedes Classe B
Finally, if you experience a noise almost like a humming or whinning sound on the transmssion of your Mercedes Classe B, it is very often the case that the gearbox of your Mercedes Classe B lacks oil. Indeed, if it lacks oil, the parts will be exposed and grind agaisnt each other. In addition, each of its contacts will generate chips or metal dust that will mix with the oil and make even greater resistance to mechanisms that are already worn out, a snowball effect will happen if you do not fairly quickly replace the oil. In this situation the oil should be black and your can can smell burning. Occasionally this sort of noises will be linked to a release bearing on Mercedes Classe B, don’t hesitate to go to our article.
The solutions existing if you feel a gearbox noise on your Mercedes Classe B
- Examine the gearbox oil of your Mercedes Classe B via the level gauge and reflect on changing it if the oil is black
- Use the double clutch to try to make it last till you’re able to change the gearbox, this will limit the already advanced wear of your gearbox and limit the wear of the pinions.
- Start looking for a second-hand or new gearbox, very few technicians have the capability to replace damaged parts in your own system, they will almost always offer you a standard exchange.
