Did you ever had this trouble trying to start your car in the morning and it doesn’t work ? If that didn’t happen to you, certainly you’ve already had that fear. So when you notice an alternator noise on Mercedes Classe M, you can already see yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this post to support you locate the sources of alternator sounds. In this article, you will first see the role and functions of the alternator in your Mercedes Classe M and then what the causes and solutions to alternator noise on Mercedes Classe M may be.
Role and alternator operation Mercedes Classe M
Alternator role
Your alternator is an vital part of your Mercedes Classe M. Indeed, its mission is to provide power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task of recharging the battery once the automobile is in motion, to provide power to the automobile in motion and to allow you to always have a enough energy reserve to be able to restart the next time.
Alternator functioning
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The alternator operates on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while spinning makes electricity. It is the engine motor itself that will provide the energy requested by the alternator to generate the energy, via the accessory belt or alternator belt. When your Mercedes Classe M engine stops, the battery takes over to provide the automobile with energy.
What are the distinctive alternator noises or sounds on my Mercedes Classe M and what are the causes?
I notice a knocking noise caused by the alternator of my Mercedes Classe M
One of the typical noises of a tired alternator on Mercedes Classe M is a knocking noise. This alternator sound on Mercedes Classe M will generally happen when your engine is idling, it can be linked to voltage drops that could affect the normal operation of electrical parts such as headlights for example. In general, it is a of both bearings of the alternator that is malfunctioning, to check it, use a multimeter on the terminals of your automobile with the engine running and you must get a value between 12 and 14.7 volts, which means that your alternator is recharging your battery well. If the value is lower, the alternator of your Mercedes Classe M is tired and you should think about replacing the bearing if it is the only cause otherwise the entire part.
I notice a grinding noise coming from the alternator of my Mercedes Classe M
If you are in the situation where the alternator of your Mercedes Classe M produces grinding sounds, in this case you will have to look into it more seriously. This symptom can testify as for the knocking sound of a tired bearing, however , generally, we generally realise by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we suggest that you look for advice this article to find all the necessary information to solve an accessory belt noise on Mercedes Classe M.
I notice a loud noise from the alternator of my Mercedes Classe M
Experiencing a loud noise from the alternator of your Mercedes Classe M is quite typical, in fact, it produces an audible sound when producing the electrical pulses it generates. It is up to you to check that the battery indicator light on your dashboard does not show up, and that you do not have a voltage drop when your engine is running (headlight or dashboard light that jumps for example. If this noise is too loud, we suggest that you look into this article to find other ways to solve problem of noises from front end on Mercedes Classe M.
