It is never pleasurable to listen to a sound on your car that you don’t know where it comes from. You may be questioning what to do when you identify a reversing gear noise that lasts on your Mercedes Classe C 4? Any gearbox issue can be important, but before making sure, it is better to do a few investigations. Our team has created this paper to help you resolve it. First, we will see what the sources and the different gearbox noises can be on Mercedes Classe C 4, and second, what are the solutions available to you.
Classical reverse Mercedes Classe C 4 noises and some tips to maintain your gearbox
Why does the reversing of my Mercedes Classe C 4 make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult action. The sound caused by the reversing of your Mercedes Classe C 4 is logical. It can be explained in a fairly simple way. In fact, 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 important than with spur gears implemented 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 practice. In fact, the pressure you will put in on the gears will be monumental and you will produce a premature wear and tear of the gears. You can even destroy the gears of your gearbox at speed by doing so. It will therefore be completely usual if you listen to a reverse noise on your Mercedes Classe C 4 if you shift gear under these conditions.
Diverse Mercedes Classe C 4 reversing noises and their origins
Finally in this section, we will move on to what you are probably most enthusiastic about in this document, to learn about the source of reversing noise on Mercedes Classe C 4. Here are the 3 typical noises you may be victim of.
I experience a grinding noise when starting in reverse gear
If you listen to a grinding noise when you start in reverse with your Mercedes Classe C 4, 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 produced by the gearbox are higher and it is therefore conceivable that due to their wear the silentblocks no longer absorb the engine vibrations well. In this case, do not hesitate to consult this paper for more info about strut mount noises on Mercedes Classe C 4.
An increased reverse knocking noise on Mercedes Classe C 4X
If you are subject to a knocking noise when you are in reverse with your Mercedes Classe C 4 and this noise tends to increase as you gain speed. It is conceivable that you are going through a serious issue that needs to be solved very fast before ruining your entire gearbox. In fact, 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 before long. Take your car to your mechanic quickly or browse this document about gearbox noise on Mercedes Classe C 4 for more data.
I notice a noise when I go in reverse
Finding out 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 C 4 reverse gear makes more noise than before, it is conceivable that filings have been created and are moving around in it. It is therefore time to empty the box.
