Do you perceive a metallic noise on your Mercedes Classe A 3 once you drive? We understand that this is not pleasant and that you have questions. Experiencing such a noise is not always a good signal, but it may also be nothing major. To help you remedy this trouble, we have decided to create this content to help you in this search. In order to carry out this research as effectively as possible, we will first take a look at the conceivable 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 A 3 coming from the front end of the vehicle
I perceive a metal rattling noise coming from wheels
- Metallic noise based on your bearing
- Metalic noise coming from brake
- Stabilizer bar worn
One of the possible triggers of metal noise symptoms on your Mercedes Classe A 3, may be that one of your bearing is tired, it will commonly make a loud noise that increases when stressed (turns faster and faster). So keep in mind to verify by taking speed (neutral gear and window open to be aware only to noise of the wheels) that the noise is well established here, if this is the case replace it or them quickly. If, on the other hand, this noise only manifests itself with an engaged speed, examine this article on loud noise on Mercedes Classe A 3, you will most likely find a remedy to your trouble.
If you encounter a metalic noise on Mercedes Classe A 3 and you have the feeling that it comes from your front wheels, it is highly conceivable that it is your pads or discs that are the trigger. In fact, a disc or a set of dead plates will make a strong metallic rubbing noise that you will inevitably feel. To verify this, put your vehicle on safety stand, and verify the condition of your discs and pads by taking out the wheel. If they are involved, replace them promptly , otherwise you will no longer be able to brake. If you feel a metallic noise from your vehicle, and you want infos about it, read this guide for more info 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 A 3, then your rods may be worn. Whether it is the steering or the stabilizer bar, their wear will induce a metallic snap when they hit or change direction. To verify 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 changed. If this is your case, we advise that you have a look at this content for a complete guide about steering noises on Mercedes Classe A 3.
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 damaged, you will feel as you pass over damaged roads or sidewalks, loud metallic noises on your Mercedes Classe A 3. Once screwed up, they will no longer fulfill their purpose as shock absorbers and, with each impact, or violent acceleration, a noise will come out. Therefore, keep in mind to verify their status and replace them if required. Feel free to read this content which is a complete file about strut mounts noises on Mercedes Classe A 3, how to verify their condition and replace them.
Finally, the last typical trigger of metallic noise on Mercedes Classe A 3. It’s because your transmission system is the source. It is possible, 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 develop a continuous metal rattling sound. That you shouldn’t feel in neutral. If this is your case, we advise that you read this detailed guide on the sources of steering noises on Mercedes Classe A 3.
Metallic noise Mercedes Classe A 3 coming from the rear end of the vehicle
Exhaust pipe
If, on the other hand, you hear an exhaust noise that is more of a metallic type, it is conceivable that one or more parts of your exhaust may be damaged. In fact, it is conceivable that either the catalyst or the silencer may be the trigger of this sound. To be sure, go under the vehicle, cold, and knock each of the previously stated elements with a hammer to locate the source of the noise. You should notice 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 this instance, to stop the metallic noise on your Mercedes Classe A 3, 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 conceivable that with wear they are at the origin of your metallic noises on your Mercedes Classe A 3. Go a little further up in the content where you will find details 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.
