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 apprehension. So when you find out an alternator noise on Mercedes Classe V, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this article to help you find the origins of alternator sounds. In this article, you will first see the role and functions of the alternator in your Mercedes Classe V and then what the causes and solutions to alternator noise on Mercedes Classe V may be.
Role and alternator operation Mercedes Classe V
Alternator role
Your alternator is an fundamental part of your Mercedes Classe V. In fact, its objective is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission of charging the battery once the car is in motion, to provide power to the car in motion and to allow you to always have a enough energy source 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 rotating makes 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 Classe V engine stops, the battery takes over to provide the car with energy.
What are the different alternator noises or sounds on my Mercedes Classe V and what are the causes?
I listen to a knocking noise coming from the alternator of my Mercedes Classe V
One of the typical noises of a tired alternator on Mercedes Classe V is a knocking noise. This alternator sound on Mercedes Classe V will most of the time happen when your engine is idling, it can be linked to voltage drops that could disturb the normal operation of electrical components such as headlights for example. In general, it is a of both bearings of the alternator that is faulty, to examine it, use a multimeter on the terminals of your car with the engine running and you must look for 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 Classe V is tired and you should think about changing the bearing if it is the only reason otherwise the complete part.
I find out a grinding noise coming from the alternator of my Mercedes Classe V
If you are in the situation where the alternator of your Mercedes Classe V produces grinding sounds, in this circumstance you will have to look at it more seriously. This sign can testify as for the knocking sound of a tired bearing, however , generally, we often notice by looking more closely that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this circumstance, we encourage that you consult this article to find all the necessary information to solve an accessory belt noise on Mercedes Classe V.
I find out a loud noise from the alternator of my Mercedes Classe V
Listening a loud noise from the alternator of your Mercedes Classe V is quite regular, in fact, it produces an audible sound when creating the electrical pulses it generates. It is up to you to examine 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 encourage that you take a look at this article to find other ways to solve problem of noises from front end on Mercedes Classe V.
