When you observe abnormal noises on your Mercedes Benz M Class you tend to worry about them. Especially when you feel a noise when you accelerate on your Mercedes Benz M Class. It is right away assimilated to an engine unit issue and can therefore be serious. As we know that you do not take these trouble lightly, we have decided to write this content page to support you find the causes and eliminate this concern as quickly as possible. To do this, we will first see what are the causes of a high pitched noise when accelerating with my Mercedes Benz M Class, then what is a whistling or ratling noise at the acceleration of my Mercedes Benz M Class, then the sources of a noise that intensifies during acceleration and finally a noise that stops when I stop accelerating.
Ma Mercedes Benz M Class makes a high-pitched noise when I accelerate:
If your Mercedes Benz M Class makes a loud noise when you accelerate, it is quite plausible that the alternator belt is the cause of your issue. You will need to identify if this noise happens abruptly and if it can stop as it started. The alternator belt is a wearing part that is utilized to bring power to the secondary components of your Mercedes Benz M Class’s engine and although it is less important than the timing belt it can bring about engine failure if it fails. This noise may be a symptom of a slackened belt, in which case the tensioner roller or its wear and tear may be responsible. In any case, check the condition of your belt and its tension. If it causes this acceleration noise on Mercedes Benz M Class, go to your auto technician.
Ma Mercedes Benz M Class makes whining noise when I accelerate:
- Rattling or whistling noise generated by the turbo
- Humming noise caused by air leakage
If you have a power loss that accompanies the rattling noise when you accelerate with your Mercedes Benz M Class, it is conceivable that your turbo is failing and some of its elements are at the end of their life. Examine it and change it if it is the cause, otherwise you risk clogging your engine in the long run. If you find out this blowing or whistling noise on your car, feel free to consult this content about turbo noises on Mercedes Benz M Class, if you would like more information.
If, on the other hand, you do not get any power loss due to an humming noise on your Mercedes Benz M Class, it is more than likely that you have one of your junctions or air hoses that has holes. So check the whole air supply system from your air filter to your engine to locate the starting point of this acceleration sound.
Ma Mercedes Benz M Class makes an increasingly loud noise when I accelerate:
If, on the other hand, you have the feeling that the more you gain speed, the more your noise at acceleration on Mercedes Benz M Class gets loud, then you will have to check out the rolling parts of your automobile. Indeed, if this loud noise does not emerge when you iddle, it is surely linked to your transmission, and, in general, to your wheels. The most common cause is the state of your bearings, so make sure you check their condition to be sure it is not the cause of this loud noise when you accelerate. If not, go to this content page about the noises related to Mercedes Benz M Class noise wheels.
Ma Mercedes Benz M Class makes a noise when I accelerate that stops when I stop accelerating:
To finish, if you encounter a noise when accelerating with your Mercedes Benz M Class and this noise which could be a cliking sound tends to reduce when you disengage (press the clutch pedal), then one of the wear parts of your clutch system may be the cause. Indeed, the clutch release bearings must be replaced around every 120 000 / 130 000km. To evaluate it, you just have to see if you have more difficulty than usual shifting gears, if you feel a resistance either stronger or non-existent in the clutch pedal. If you have any of these symptoms, go to your auto mechanic to swap the clutch release bearings on your Mercedes Benz M Class. Read our article on clutch noise on Mercedes Benz M Class for more information.
