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, at minimum you’ve already had that fear. So when you discover an alternator noise on Mercedes Classe A, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this article to support you locate the origins of alternator sounds. In this article, you will first discover the role and functions of the alternator in your Mercedes Classe A and then what the causes and solutions to alternator noise on Mercedes Classe A may be.
Role and alternator operation Mercedes Classe A
Alternator role
Your alternator is an important part of your Mercedes Classe A. Indeed, its goal is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of recharging the battery once the automobile is in motion, to provide power to the automobile in motion and to let you to always have a enough 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 rotating makes electricity. It is the engine motor itself that will provide the energy needed by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes Classe A engine stops, the battery takes over to provide the automobile with energy.
What are the distinctive alternator noises or sounds on my Mercedes Classe A and what are the causes?
I hear a knocking noise originating from the alternator of my Mercedes Classe A
One of the characteristic noises of a tired alternator on Mercedes Classe A is a knocking noise. This alternator sound on Mercedes Classe A will generally appear when your engine is idling, it can be connected to voltage drops that could disturb 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 examine it, use a multimeter on the terminals of your automobile with the engine running and you must look for 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 A is tired and you should think about replacing the bearing if it is the only reason otherwise the complete part.
I discover a grinding noise coming from the alternator of my Mercedes Classe A
If you are in the case where the alternator of your Mercedes Classe A produces grinding sounds, in this circumstance you will have to check it more seriously. This indicator can testify as for the knocking sound of a tired bearing, however , in most cases, we generally 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 circumstance, we encourage that you consult this document to find all the necessary information to solve an accessory belt noise on Mercedes Classe A.
I discover a loud noise from the alternator of my Mercedes Classe A
Experiencing a loud noise from the alternator of your Mercedes Classe A is quite typical, 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 check out this document to find other ways to solve problem of noises from front end on Mercedes Classe A.
