Do you hear a metallic noise on your Mercedes Classe S when ever you drive? We understand that this is not relaxing and that you have questions. Discovering such a noise is not always a good sign, but it may also be nothing major. To support you fix this problem, our redaction decided to prepare this content to help you in this search. In order to execute this research as effectively as possible, we will first have a look at the possible sources of metallic noise in the front of your vehicle, and then, if the metallic noise comes from the rear of your vehicle.
Metal noise Mercedes Classe S coming from the front end of the vehicle
I perceive a metal rattling noise coming from wheels
- Metallic noise caused by your bearing
- Metalic noise coming from brake
- Stabilizer bar worn
One of the probable triggers of metal noise symptoms on your Mercedes Classe S, may be that one of your bearing is tired, it will tend to generate a loud noise that raises when stressed (turns faster and faster). So keep in mind to check by taking speed (neutral gear and window open to pay attention only to noise of the wheels) that the noise is well based here, if this is the case replace it or them fairly quickly. If, on the other hand, this noise only manifests itself with an engaged speed, browse this article on loud noise on Mercedes Classe S, you will most likely find a remedy to your problem.
If you encounter a metalic noise on Mercedes Classe S 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 reason. Indeed, a disc or a set of dead plates will generate a strong metallic friction noise that you will inevitably feel. To check this, put your vehicle on safety stand, and check the condition of your discs and pads by removing the wheel. If they are involved, replace them fairly quickly , otherwise you will no longer be able to brake. If you encounter a metallic noise from your vehicle, and you want infos about it, read this article for more information about brake noises on xxx.
If it is rather when you are turning, passing over a bump or sidewalk that you perceive a metallic noise on your Mercedes Classe S, 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 vehicle, without the wheels, and move your rods, if they only oppose very little force it is likely that they will have to be replaced. If this is your case, we recommend highly that you read this content for a complete guide about steering noises on Mercedes Classe S.
Other sources
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- Engine silentblock
- Dead gearbox, or broken pinion
A bit like worn stabilizer bar, if your engine silent blocks are damaged, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your Mercedes Classe S. Once screwed up, they will no longer fulfill their function as shock absorbers and, with each impact, or violent acceleration, a noise will appear. Therefore, keep in mind to check their status and replace them if needed. Feel free to have a look at this content which is a complete file about strut mounts noises on Mercedes Classe S, how to check their condition and change them.
Finally, the last classic reason of metallic noise on Mercedes Classe S. It’s because your transmission system is the origin. It is conceivable, 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 make a continuous metal rattling noise. That you shouldn’t feel in neutral. If this is your case, we recommend highly that you read this detailed guide on the sources of steering noises on Mercedes Classe S.
Metallic noise Mercedes Classe S coming from the rear end of the vehicle
Exhaust pipe
If, on the other hand, you feel 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 reason of this noise. To be certain, go under the vehicle, cold, and knock each of the previously stated parts with a hammer to locate 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 cases like this, to eliminate the metallic noise on your Mercedes Classe S, 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 vehicle, it is possible that with wear they are at the origin of your metallic noises on your Mercedes Classe S. Go a little further up in the article content where you will find information of the solution already exposed for the front part of the vehicle.
Finally, if the noise comes from your discs brakes or pads, you should refer to the part in question in the first section of this manual.
