It is never relaxing to experience a sound in your vehicle that you don’t know the source of. So, what if you discover a loud noise that remains on your Mercedes Benz C Class? It is highly plausible that this is a minor trouble, but before beeing sure, it is better to complete some inspections. Whether that loud noise comes from the front of the vehicle, from the rear, whether it shows up when you accelerate or when you are parked, our team has created this content to help you solve it. First, we will point out the possible explanations for the trouble according to when loud noise shows up on your Mercedes Benz C Class, and then we will give attention to the region of origin of the noise. In any case, if this noise remains, follow these suggestions to help you find the origin.
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When does my Mercedes Benz C Class make a loud noise?
One way to identify a noise from your Mercedes Benz C Class is to determine when it shows up. Indeed, some trouble can be connected to components that are only stressed under certain circumstances. It is this method that we will focus on in this first part.
Loud noise Mercedes Benz C Class when accelerating
Loud noise on Mercedes Benz C Class that starts 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. In addition, it is also highly plausible that loud noise on your Mercedes Benz C Class is related to a wheel bearing, which is one of the most common causes of these types of signs of illness. 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 Benz C Class is stopped
If your Mercedes Benz C Class makes a loud noise while not accelerating, engine on, the trouble may be linked to poor air intake. An air intake hose that has come loose or has a hole in it may be the reason.
Where does loud noise come from on my Mercedes Benz C Class and how can I be sure of its origin?
Now that we have located the cause of the sound, we will deal with the verification stage to be sure that this is the issues you are experiencing.
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The loud noise comes from the wheels of my Mercedes Benz C Class
As we have seen previously, loud noise from the wheels of your Mercedes Benz C Class may be linked 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 consider 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 straight away. 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 Benz C Class that is the matter, you will tend to feel a vibration in the direction of the vehicle as you go faster. In both cases, you will have to go to your mechanic to change the tires or execute a balancing.
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The loud noise comes from the engine of my Mercedes Benz C Class
In case you have identified loud noise as coming from the engine of your Mercedes Benz C Class, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be linked to 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 C 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 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 problems, take your vehicle to your service 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 Benz C Class, it is highly plausible 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 Benz C Class, 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 vehicle while you accelerate to find the exact area of starting point 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.
