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 , perhaps you’ve already had that apprehension. So when you hear an alternator noise on Mercedes A class, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this content to support you locate the origins of alternator sounds. In this article, you will first discover the role and operation of the alternator in your Mercedes A class and then what the causes and solutions to alternator noise on Mercedes A class may be.
Role and alternator operation Mercedes A class
Alternator role
Your alternator is an important part of your Mercedes A class. Indeed, its goal is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of charging the battery once the car is in motion, to provide power to the car in motion and to let 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 itself that will furnish the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes A class engine stops, the battery takes over to furnish the car with energy.
What are the distinctive alternator noises or sounds on my Mercedes A class and what are the causes?
I hear a knocking noise coming from the alternator of my Mercedes A class
One of the typical noises of a tired alternator on Mercedes A class is a knocking noise. This alternator sound on Mercedes A class will generally occur when your engine is idling, it can be linked to voltage drops that could disrupt the normal operation of electrical components such as headlights for example. In many cases, it is a of both bearings of the alternator that is faulty, to check 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 A 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 A class
If you are in the case where the alternator of your Mercedes A class generates grinding sounds, in this case you will have to look into it more seriously. This sign can testify as for the knocking sound of a tired bearing, however , generally, we often realise 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 encourage that you look for advice this content to find all the necessary details to solve an accessory belt noise on Mercedes A class.
I hear a loud noise from the alternator of my Mercedes A class
Hearing a loud noise from the alternator of your Mercedes A class is quite common, 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 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 go to this content to find other ways to solve problem of noises from front end on Mercedes A class.
