It is never enjoyable to perceive a sound on your vehicle that you don’t know where it comes from. You may be wondering what to do when you detect a reversing gear noise that remains on your Mercedes Classe B 3? Any gearbox trouble can be severe, but before making sure, it is better to do a few inspections. Our team has created this content page to support you deal with it. First, we will see what the origins and the different gearbox noises can be on Mercedes Classe B 3, and second, what are the solutions available to you.
Classical reverse Mercedes Classe B 3 noises and some tips to maintain your gearbox
Why does the reversing of my Mercedes Classe B 3 make a different noise from my other speeds?
De facto, adding all gears, bearings and pinions into a gearbox is a difficult exercise. The sound caused by the reversing of your Mercedes Classe B 3 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 more quiet than with spur gears employed 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 vehicle in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the vehicle is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad choice. Indeed, the pressure you will exert on the gears will be enormous 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 hear a reverse noise on your Mercedes Classe B 3 if you shift gear under these conditions.
Different Mercedes Classe B 3 reversing noises and their causes
Finally in this section, we will move on to what you are probably most curious about in this page, to learn about the origin of reversing noise on Mercedes Classe B 3. Here are the 3 typical sounds you may be victim of.
I perceive a grinding noise when starting in reverse gear
If you perceive a grinding noise when you start in reverse with your Mercedes Classe B 3, it may be the engine mounts that are tired. Indeed, 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 plausible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this situation, do not hesitate to check this content page for more details about strut mount noises on Mercedes Classe B 3.
An increased reverse knocking noise on Mercedes Classe B 3X
If you are subject to a knocking noise when you are in reverse with your Mercedes Classe B 3 and this noise tends to increase as you gain speed. It is plausible that you are confronting 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 in short order. Take your vehicle to your technician quickly or browse this document about gearbox noise on Mercedes Classe B 3 for more details.
I find out 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 3 reverse gear makes more noise than before, it is plausible that filings have been created and are moving around in it. It is therefore time to empty the box.
