Do you listen to a metallic noise on your Mercedes Classe Cls when you drive? We can understand that this is not pleasurable and that you are wandering. Discovering such a noise is not always a good signal, but it may also be nothing severe. To support you resolve this problem, we have decided to produce this content page to assist you in this investigation. In order to carry out this research as efficiently as possible, we will first look at the possible sources of metallic noise in the front of your car, and then, if the metallic noise comes from the rear of your car.
Metal noise Mercedes Classe Cls coming from the front end of the car
I listen to a metal rattling noise coming from wheels
- Metallic noise caused by your bearing
- Metalic noise coming from brake
- Stabilizer bar worn
One of the possible triggers of metal noise symptoms on your Mercedes Classe Cls, may be that one of your bearing is tired, it will frequently produce a loud noise that increases when stressed (turns faster and faster). So bear in mind to check by taking speed (neutral gear and window open to listen only to noise of the wheels) that the noise is well established here, if this is the case change it or them quickly. If, on the other hand, this noise only manifests itself with an engaged speed, browse this guide on loud noise on Mercedes Classe Cls, you will most likely find a solution to your problem.
If you discern a metalic noise on Mercedes Classe Cls and you have the feeling that it comes from your front wheels, it is highly possible that it is your pads or discs that are the cause. Indeed, a disc or a set of dead plates will create a strong metallic rubbing noise that you will inevitably feel. To check this, put your car on safety stand, and check the state of your discs and pads by taking out the wheel. If they are involved, change them quickly , otherwise you will no longer be able to brake. If you encounter a metallic noise from your car, and you want informations about it, go through this guide for more details about brake noises on xxx.
If it is rather when you are turning, passing over a bump or sidewalk that you listen to a metallic noise on your Mercedes Classe Cls, then your rods may be worn. Whether it is the steering or the stabilizer bar, their wear will cause a metallic snap when they hit or change direction. To check this, position yourself under your car, without the wheels, and move your rods, if they only oppose very little force it is likely that they will have to be changed. If this is your case, we would suggest that you consult this content page for a complete guide about steering noises on Mercedes Classe Cls.
Other sources
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- Engine silentblock
- Dead gearbox, or broken pinion
A little like worn stabilizer bar, if your engine silent blocks are weakened, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your Mercedes Classe Cls. Once screwed up, they will no longer fulfill their role as shock absorbers and, with each impact, or violent acceleration, a noise will come out. Therefore, bear in mind to check their status and change them if necessary. Feel free to consult this content page which is a complete file about strut mounts noises on Mercedes Classe Cls, how to check their state and change them.
Finally, the last classic cause of metallic noise on Mercedes Classe Cls. It’s because your transmission system is the origin. It is plausible, either because of improper use of the gearbox or because of excessive wear, that some gears in your gearbox have broken and are wandering around in it. They will then create a continuous metal rattling noise. That you shouldn’t feel in neutral. If this is your case, we would suggest that you look at this detailed guide on the origins of steering noises on Mercedes Classe Cls.
Metallic noise Mercedes Classe Cls coming from the rear end of the vehicle
Exhaust pipe
If, on the other hand, you are subject to an exhaust noise that is more of a metallic type, it is possible that one or more parts of your exhaust may be damaged. Indeed, it is possible that either the catalyst or the silencer may be the cause of this noise. To be certain, go under the car, cold, and knock each of the previously stated components with a hammer to define the origin of the noise. You should perceive things moving in the problematic part, if it’s the exhaust baffles, you can try to hammer in the section a little to try to block them and limit their movements. If it is a dead catalyst, it will be required to consider swapping it, as well as the silencer. In such a case, to eliminate the metallic noise on your Mercedes Classe Cls, you will either have to find a second hand one and do it yourself, or go to your mechanic.
Noise from wheels
- Bearings
- Brake pads or discs
As for the bearings of your car, it is possible that with wear they are at the origin of your metallic noises on your Mercedes Classe Cls. Go a little further up in the document where you will find information of the solution already exposed for the front part of the car.
Finally, if the noise originates from your discs brakes or pads, you should refer to the part in question in the first section of this manual.
