It is never relaxing to experience a noise in your vehicle that you don’t know the origin of. So, what if you recognize a loud noise that lasts on your Mercedes Benz CLA Class? It is highly possible that this is a minor issue, but before beeing sure, it is better to carry out some inspections. 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 content to help you solve it. First, we will point out the possible reasons for the issue according to when loud noise shows up on your Mercedes Benz CLA Class, and then we will look into the region of origin of the noise. In any case, if this noise remains, follow these recommendations to help you find the origin.
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When does my Mercedes Benz CLA Class make a loud noise?
One way to discern a noise from your Mercedes Benz CLA Class is to determine when it appears. Indeed, some trouble can be related 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 CLA Class when accelerating
Loud noise on Mercedes Benz CLA Class that happens when you are accelerating can be symptomatic of different failures. Indeed, if you encounter a noise that is louder and louder when you accelerate, it can come from a faulty turbo that will generate a much higher noise than during normal use. In addition, it is also highly possible that loud noise on your Mercedes Benz CLA Class is connected to a wheel bearing, which is one of the most common origins 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 increases speed.
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When my Mercedes Benz CLA Class is stopped
If your Mercedes Benz CLA Class makes a loud noise while not accelerating, engine on, the issue may be in connection with poor air intake. An air intake hose that has come loose or has a hole in it may be the cause.
Where does loud noise come from on my Mercedes Benz CLA Class and how can I be sure of its origin?
Now that we have located the source of the noise, we will look into the verification stage to make sure that this is the matter you are encountering.
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The loud noise comes from the wheels of my Mercedes Benz CLA Class
As we have seen previously, loud noise from the wheels of your Mercedes Benz CLA Class may be in connection with two main problems. 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 replace it or them as soon as possible. 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 CLA Class that is the trouble, you will tend to feel a vibration in the direction of the automobile as you go faster. In both cases, you will have to go to your mechanic to replace the tires or perform a balancing.
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The loud noise comes from the engine of my Mercedes Benz CLA Class
In case you have recognized loud noise as coming from the engine of your Mercedes Benz CLA Class, the two most likely causes are turbo and air intake. In the first case, a turbo failure may also be connected to 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 Benz CLA Class 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 cause 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 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 noticed comes from the exhaust pipe of your Mercedes Benz CLA Class, 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 Benz CLA 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 vehicle 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.
