It is never pleasant to notice a sound in your car that you don’t know the origin of. So, what if you discern a loud noise that remains on your Mercedes Benz GL Class? It is very possible that this is a minor issue, but before beeing sure, it is better to complete 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 created this article to help you fix it. First, we will summarize the possible reasons for the trouble according to when loud noise shows up on your Mercedes Benz GL Class, 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 Benz GL Class make a loud noise?
One way to detect a noise from your Mercedes Benz GL Class is to define when it shows up. Indeed, some trouble can be linked to components that are only stressed under certain conditions. It is this approach that we will focus on in this first part.
Loud noise Mercedes Benz GL Class when accelerating
Loud noise on Mercedes Benz GL Class that occurs when you are accelerating can be symptomatic of several failures. In fact, if you experience 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 process. Additionally, it is also highly possible that loud noise on your Mercedes Benz GL Class is connected to a wheel bearing, which is one of the most common origins of these types of manifestations. 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 Benz GL Class is stopped
If your Mercedes Benz GL Class makes a loud noise while not accelerating, engine on, the issue may be connected 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 Benz GL Class and how can I be sure of its origin?
Now that we have found the cause of the noise, we will focus on the verification step to be certain that this is the issues you are encountering.
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The loud noise comes from the wheels of my Mercedes Benz GL Class
As we have seen before, loud noise from the wheels of your Mercedes Benz GL Class may be connected 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 bear in mind to check 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 swap it or them quickly. 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 Benz GL Class that is the trouble, 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 swap the tires or execute a balancing.
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The loud noise comes from the engine of my Mercedes Benz GL Class
In case you have identified loud noise as coming from the engine of your Mercedes Benz GL Class, 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 experience a power loss during your acceleration. If the loud noise on your Mercedes Benz GL Class is related to air intake, the control 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 check that the engine idle speed is not random. In case you confirm one of these two disorders, take your automobile to your service garage .
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Loud noise comes from the exhaust pipe of the vehicle
If the noise you have discovered comes from the exhaust pipe of your Mercedes Benz GL Class, it is highly possible 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 Benz GL Class, that a part has been cut off due to wear, or, finally, that a clamp has become loose due to vibrations. To verify 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.
