It is never pleasant to notice a sound on your car that you don’t know where it comes from. You may be thinking what to do when you notice a reversing gear noise that continues on your Mercedes Classe Cls? Any gearbox problem can be serious, but before making sure, it is better to do a few inspections. Our team has written this article to help you fix it. First, we will see what the origins and the different gearbox noises can be on Mercedes Classe Cls, and second, what are the solutions available to you.
Classical reverse Mercedes Classe Cls noises and some tips to protect your gearbox
Why does the reversing of my Mercedes Classe Cls 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 induced by the reversing of your Mercedes Classe Cls 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 employed for the reverse gear.
Tips to limit wear on your clutch and gearbox
- Don’t give a big boost:
Indeed, if you kick the throttle hard when you are in reverse or when you put the car in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the car is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad plan. Indeed, the pressure you will apply on the gears will be monumental and you will make 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 normal if you perceive a reverse noise on your Mercedes Classe Cls if you shift gear under these conditions.
Several Mercedes Classe Cls reversing noises and their origins
Finally in this section, we will move on to what you are probably most interested in this article, to find out about the origin of reversing noise on Mercedes Classe Cls. Here are the 3 typical noises you may be victim of.
I notice a grinding noise when starting in reverse gear
If you notice a grinding noise when you start in reverse with your Mercedes Classe Cls, it may be the engine mounts that are tired. Certainly, when the engine is in reverse gear, due to the pinions we saw above the vibrations generated 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 browse this content for more info about strut mount noises on Mercedes Classe Cls.
An increased reverse knocking noise on Mercedes Classe ClsX
If you are subject to a knocking noise when you are in reverse with your Mercedes Classe Cls and this noise tends to amplify as you gain speed. It is possible that you are experiencing a serious problem that needs to be fixed fairly quickly before destroying your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will propagate to the rest of the box and damage other gears very fast. Take your car to your technician quickly or browse this content page about gearbox noise on Mercedes Classe Cls for more details.
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 Cls reverse gear makes more noise than before, it is possible that filings have been produced and are moving around in it. It is therefore time to empty the box.
