It is never enjoyable to notice a sound on your automobile that you don’t know where it comes from. You may be wondering what to do when you find a reversing gear noise that persists on your Mercedes Classe B? Any gearbox trouble can be serious, but before making sure, it is better to do a few investigations. Our team has made this document to support you resolve it. First, we will see what the origins and the different gearbox noises can be on Mercedes Classe B, and second, what are the solutions available to you.
Classical reverse Mercedes Classe B noises and some tips to look after your gearbox
Why does the reversing of my Mercedes Classe B make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult action. The noise created by the reversing of your Mercedes Classe B is logical. It can be explained in a fairly simple way. Indeed, the gears used for conventional speeds (1st to 5th or 6th) are so-called “helical” gears (oblique gears) . The use of such a pinion makes the noise caused by the gears less strong than with spur gears used for the reverse gear.
Tips to reduce wear on your clutch and gearbox
- Don’t give a big boost:
Certainly, if you kick the throttle hard when you are in reverse or when you put the automobile in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the automobile is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad practice. Indeed, the pressure you will exert on the gears will be monumental and you will create a premature wear and tear of the gears. You can even break the gears of your gearbox at speed by doing so. It will therefore be completely common if you listen to a reverse noise on your Mercedes Classe B if you shift gear under these conditions.
Several Mercedes Classe B reversing noises and their triggers
Finally in this section, we will move on to what you are probably most excited about in this content, to learn about the cause of reversing noise on Mercedes Classe B. Here are the 3 typical sounds you may be victim of.
I perceive a grinding noise when starting in reverse gear
If you notice a grinding noise when you start in reverse with your Mercedes Classe B, it may be the engine mounts that are tired. In fact, when the engine is in reverse gear, due to the pinions we saw above the vibrations made by the gearbox are higher and it is therefore possible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this situation, do not hesitate to check out this content for more details about strut mount noises on Mercedes Classe B.
An increased reverse knocking noise on Mercedes Classe BX
If you are subject to a knocking noise when you are in reverse with your Mercedes Classe B and this noise tends to amplify as you gain speed. It is possible that you are going through a serious trouble that needs to be resolved fairly quickly before destroying your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will spread to the rest of the box and damage other gears quickly. Take your automobile to your repair shop quickly or check out this content about gearbox noise on Mercedes Classe B for more data.
I listen to a noise when I go in reverse
Listening a noise when you shift into reverse is normal and connected to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your Mercedes Classe B reverse gear makes more noise than before, it is possible that filings have been made and are moving around in it. It is therefore time to empty the box.
