It is never enjoyable to find out a noise in your automobile that you don’t know the starting point of. So, what if you recognize a loud noise that persists on your Mercedes Classe Cls? It is extremely plausible that this is a minor trouble, but before beeing sure, it is better to carry out some investigations. Whether that loud noise comes from the front of the automobile, from the rear, whether it happens when you accelerate or when you are parked, our team has made this content to help you fix it. First, we will point out the possible causes for the issue according to when loud noise shows up on your Mercedes Classe Cls, and then we will focus on the region of origin of the noise. In any case, if this noise lasts, follow these recommendations to help you find the source.
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When does my Mercedes Classe Cls generate a loud noise?
One way to discern a noise from your Mercedes Classe Cls is to define when it appears. Indeed, some trouble can be connected to parts that are only stressed under certain conditions. It is this method that we will focus on in this first part.
Loud noise Mercedes Classe Cls when accelerating
Loud noise on Mercedes Classe Cls that shows up when you are accelerating can be symptomatic of several failures. Indeed, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will induce a much higher noise than during normal use. In addition, it is also highly plausible that loud noise on your Mercedes Classe Cls is in connection with a wheel bearing, which is one of the most common origins of these types of symptoms. Another alternative is that your exhaust pipe may have holes or a collar may have become loose. Finally, it is also plausible that the trouble 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 Cls is stopped
If your Mercedes Classe Cls makes a loud noise while not accelerating, engine on, the trouble 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 Cls and how can I be sure of its origin?
Now that we have found the cause of the noise, we will deal with the verification stage to ensure that this is the concern you are having.
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The loud noise comes from the wheels of my Mercedes Classe Cls
As we have seen previously, loud noise from the wheels of your Mercedes Classe Cls may be related to two main complications. 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 replace it or them quickly. If it is a deformed tire, remember to visually check the entire tread area for linearity. If it is the balancing of the wheels of your Mercedes Classe Cls that is the matter, you will tend to feel a vibration in the direction of the automobile as you go faster. In both situations, you will have to go to your auto mechanic to replace the tires or do a balancing.
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The loud noise comes from the engine of my Mercedes Classe Cls
In case you have recognized loud noise as coming from the engine of your Mercedes Classe Cls, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be associated 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 Cls 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 generate 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 trouble, take your automobile to your garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have perceived comes from the exhaust pipe of your Mercedes Classe Cls, it is highly plausible that you have rust if your automobile 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 Cls, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To validate this, get help from someone who will stand under the automobile while you accelerate to find the exact area of origin 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.
