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 perceive an alternator noise on Mercedes Classe E, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this article to help you locate the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your Mercedes Classe E and then what the causes and solutions to alternator noise on Mercedes Classe E may be.
Role and alternator operation Mercedes Classe E
Alternator role
Your alternator is an important component of your Mercedes Classe E. In fact, its goal is to generate power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task of recharging the battery once the vehicle is in motion, to provide power to the vehicle 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 principle of copper coil wound around a magnet . This coil while spinning creates electricity. It is the engine motor itself that will furnish the energy required by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes Classe E engine stops, the battery takes over to furnish the vehicle with energy.
What are the distinctive alternator noises or sounds on my Mercedes Classe E and what are the causes?
I listen to a knocking noise caused by the alternator of my Mercedes Classe E
One of the typical noises of a tired alternator on Mercedes Classe E is a knocking noise. This alternator sound on Mercedes Classe E will generally happen when your engine is idling, it can be associated with voltage drops that could affect the normal operation of electrical components such as headlights for example. In most cases, it is a of both bearings of the alternator that is malfunctioning, to check it, use a multimeter on the terminals of your vehicle 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 E is tired and you should consider swapping the bearing if it is the only reason otherwise the entire part.
I perceive a grinding noise coming from the alternator of my Mercedes Classe E
If you are in the situation where the alternator of your Mercedes Classe E produces grinding sounds, in this circumstance you will have to look at it more seriously. This indicator can testify as for the knocking sound of a tired bearing, however , in general, we generally see by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this circumstance, we suggest that you read this content to find all the necessary details to solve an accessory belt noise on Mercedes Classe E.
I perceive a loud noise from the alternator of my Mercedes Classe E
Experiencing a loud noise from the alternator of your Mercedes Classe E is quite regular, in fact, it emits an audible sound when creating the electrical pulses it generates. It is up to you to check that the battery indicator light on your dashboard does not appear, 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 check out this content to find other ways to solve problem of noises from front end on Mercedes Classe E.
