It is never enjoyable to find out a noise in your vehicle that you don’t know the source of. So, what if you detect a loud noise that continues on your Mercedes Classe M? It is extremely possible that this is a minor issue, but before beeing sure, it is better to accomplish some investigations. Whether that loud noise comes from the front of the vehicle, from the rear, whether it appears when you accelerate or when you are parked, our team has made this article to help you solve it. First, we will describe the possible causes for the problem according to when loud noise shows up on your Mercedes Classe M, and then we will look into the region of origin of the noise. In any case, if this noise remains, follow these instructions to help you find the origin.
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When does my Mercedes Classe M make a loud noise?
One way to find a noise from your Mercedes Classe M is to define when it appears. Indeed, some concerns can be connected to parts that are only stressed under certain conditions. It is this technique that we will focus on in this first part.
Loud noise Mercedes Classe M when accelerating
Loud noise on Mercedes Classe M that happens when you are accelerating can be symptomatic of several failures. In fact, if you feel a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will cause a much higher noise than during normal process. Additionally, it is also highly possible that loud noise on your Mercedes Classe M is connected to a wheel bearing, which is one of the most common causes of these types of signs of illness. Another possibility is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also possible that the issue may come from a deformed tire or an unbalanced wheel that will tend to vibrate as it gains speed.
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When my Mercedes Classe M is stopped
If your Mercedes Classe M makes a loud noise while not accelerating, engine on, the issue may be related to poor air intake. An air intake hose that has come loose or has a hole in it may be the induce.
Where does loud noise come from on my Mercedes Classe M and how can I be sure of its origin?
Now that we have located the origin of the sound, we will concentrate on the verification step to make sure that this is the matter you are going through.
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The loud noise comes from the wheels of my Mercedes Classe M
As we have seen before, loud noise from the wheels of your Mercedes Classe M may be related to two main disorders. If it is one of your tired bearings, it will tend to make a thumping noise that intensifies when it is under stress (spins faster and faster). So remember to examine by driving “fast” (neutral gear on and window open to hear only the noise of the wheels) that the noise is located here, if this is the case change it or them right away. If it is a deformed tire, don’t forget to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Mercedes Classe M that is the matter, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both situations, you will have to go to your technician to change the tires or accomplish a balancing.
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The loud noise comes from the engine of my Mercedes Classe M
In case you have recognized loud noise as coming from the engine of your Mercedes Classe M, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected with a compression loss during the engine ramp-up phase, so you should encounter a power loss during your acceleration. If the loud noise on your Mercedes Classe M is related to air intake, the check will be done mainly visually, check all your air intake hoses by a visual control in your engine block to be sure that it is not damaged or disconnected which would induce an air intake, if it is just disconnected you can reconnect the air intake tubes yourself. Then examine that the engine idle speed is not random. In case you confirm one of these two problems, take your vehicle to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have detected comes from the exhaust pipe of your Mercedes Classe M, it is highly possible that you have rust if your vehicle is old and has created holes in it over time and therefore generates a very high noise close to aircraft noise on your Mercedes Classe M, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To confirm this, get help from someone who will stand under the vehicle while you accelerate to find the exact area of source of this noise. If it is a hole, you can repair it with a putty provided for this purpose, or, if it is a collar, “reattach” it. If it is cut or the hole is too big, it is better to get closer to your mechanic.
