Do you notice a metallic noise on your Mercedes Classe A 4 every time you drive? We know that this is not pleasurable and that you have questions. Discovering such a noise is not always a good sign, but it may also be nothing severe. To support you resolve this trouble, we have decided to produce this article to help you in this investigation. In order to execute this research as effectively as possible, we will first check out the possible origins 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 A 4 coming from the front end of the car
I listen 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 causes of metal noise symptoms on your Mercedes Classe A 4, may be that one of your bearing is tired, it will frequently produce a loud noise that raises when stressed (turns faster and faster). So bear in mind to verify 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 article on loud noise on Mercedes Classe A 4, you will most likely find a solution to your trouble.
If you hear a metalic noise on Mercedes Classe A 4 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. In fact, a disc or a set of dead plates will create a strong metallic rubbing noise that you will inevitably feel. To verify this, put your car on safety stand, and verify the state of your discs and pads by removing the wheel. If they are involved, change them as soon as possible , otherwise you will no longer be able to brake. If you encounter a metallic noise from your car, and you want explications about it, browse this article for more info about brake noises on xxx.
If it is rather when you are turning, passing over a bump or sidewalk that you listen a metallic noise on your Mercedes Classe A 4, 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 car, 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 that you browse this article for a complete guide about steering noises on Mercedes Classe A 4.
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 A 4. Once screwed up, they will no longer accomplish their role as shock absorbers and, with each impact, or violent acceleration, a noise will arise. Therefore, remember to verify their status and change them if required. Feel free to have a look at this article which is a complete file about strut mounts noises on Mercedes Classe A 4, how to verify their state and change them.
Finally, the last basic reason of metallic noise on Mercedes Classe A 4. It’s because your transmission system is the source. 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 develop a continuous metal rattling noise. That you shouldn’t feel in neutral. If this is your case, we recommend that you look at this detailed guide on the origins of steering noises on Mercedes Classe A 4.
Metallic noise Mercedes Classe A 4 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. In fact, it is possible that either the catalyst or the silencer may be the reason of this noise. To be sure, go under the car, cold, and knock each of the previously stated units with a hammer to define the source 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 replacing it, as well as the silencer. In this instance, to stop the metallic noise on your Mercedes Classe A 4, 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 A 4. 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 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.
