Did you ever had this trouble trying to start your car in the morning and it doesn’t work ? If it never happened to you , at minimum you’ve already had that fear. So when you hear an alternator noise on Mercedes Benz E Class, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this post to support you find the origins of alternator sounds. In this article, you will first see the role and operation of the alternator in your Mercedes Benz E Class and then what the causes and solutions to alternator noise on Mercedes Benz E Class may be.
Role and alternator operation Mercedes Benz E Class
Alternator role
Your alternator is an essential part of your Mercedes Benz E Class. In fact, its task is to provide power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of charging the battery once the automobile is in motion, to provide power to the automobile in motion and to allow you to always have a sufficient energy source to be able to restart the next time.
Alternator functioning
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The alternator works on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while spinning creates electricity. It is the engine itself that will provide the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Mercedes Benz E Class engine stops, the battery takes over to provide the automobile with energy.
What are the several alternator noises or sounds on my Mercedes Benz E Class and what are the causes?
I discover a knocking noise from the alternator of my Mercedes Benz E Class
One of the characteristic noises of a tired alternator on Mercedes Benz E Class is a knocking noise. This alternator sound on Mercedes Benz E Class will generally occur when your engine is idling, it can be linked to voltage drops that could disturb the normal operation of electrical parts such as headlights for example. In most cases, it is a of both bearings of the alternator that is faulty, to verify it, use a multimeter on the terminals of your automobile with the engine running and you must obtain a value between 12 and 14.7 volts, which means that your alternator is charging your battery well. If the value is lower, the alternator of your Mercedes Benz E Class is tired and you should think about replacing the bearing if it is the only reason otherwise the complete part.
I hear a grinding noise coming from the alternator of my Mercedes Benz E Class
If you are in the case where the alternator of your Mercedes Benz E Class generates grinding sounds, in this case you will have to look into it more seriously. This warning sign can testify as for the knocking sound of a tired bearing, but in general, we often realize by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this case, we recommend that you look for advice this document to find all the necessary information to solve an accessory belt noise on Mercedes Benz E Class.
I hear a loud noise from the alternator of my Mercedes Benz E Class
Experiencing a loud noise from the alternator of your Mercedes Benz E Class is quite typical, in fact, it produces an audible sound when creating the electrical pulses it generates. It is up to you to verify 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 recommend that you go to this document to find other ways to solve problem of noises from front end on Mercedes Benz E Class.
