It is never pleasing to listen to a sound on your car that you don’t know where it comes from. You may be wanting to know what to do when you notice a reversing gear noise that remains on your Mercedes Cla? Any gearbox problem can be severe, but before making sure, it is better to do a few inspections. Our team has created this article to help you resolve it. First, we will see what the origins and the different gearbox noises can be on Mercedes Cla, and second, what are the solutions available to you.
Classical reverse Mercedes Cla noises and some tips to preserve your gearbox
Why does the reversing of my Mercedes Cla make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult process. The noise created by the reversing of your Mercedes Cla 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 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:
In fact, 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 enormous and you will develop 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 find out a reverse noise on your Mercedes Cla if you shift gear under these conditions.
Diverse Mercedes Cla reversing noises and their causes
Finally in this section, we will move on to what you are probably most interested in this content, to learn about the cause of reversing noise on Mercedes Cla. Here are the 3 typical sounds you may be victim of.
I acknowledge a grinding noise when starting in reverse gear
If you listen to a grinding noise when you start in reverse with your Mercedes Cla, 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 generated 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 case, do not hesitate to check out this paper for more details about strut mount noises on Mercedes Cla.
An increased reverse knocking noise on Mercedes ClaX
If you are subject to a knocking noise when you are in reverse with your Mercedes Cla and this noise tends to increase as you gain speed. It is plausible that you are dealing with a serious problem that needs to be solved rather quickly 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 quickly. Take your car to your repair shop quickly or browse this document about gearbox noise on Mercedes Cla for more details.
I perceive a noise when I go in reverse
Listening a noise when you shift into reverse is normal and relating to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your Mercedes Cla reverse gear makes more noise than before, it is plausible that filings have been made and are moving around in it. It is therefore time to empty the box.
