Who hasn’t found himself in the situation where his car doesn’t start one morning on the way to work? If it never happened to you , perhaps you’ve already had that apprehension. So when you discover an alternator noise on Mercedes Benz S Class, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this post to support you locate the sources of alternator sounds. In this article, you will first see the role and functions of the alternator in your Mercedes Benz S Class and then what the causes and solutions to alternator noise on Mercedes Benz S Class may be.
Role and alternator operation Mercedes Benz S Class
Alternator role
Your alternator is an vital component of your Mercedes Benz S Class. Indeed, its goal is to generate 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 sufficient energy reserve to be able to restart the next time.
Alternator functioning
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The alternator functions on an electrical principle that has been used for decades, the principle of copper coil wound around a magnet . This coil while spinning produces electricity. It is the engine itself that will furnish the energy needed by the alternator to generate the energy, via the accessory belt or alternator belt. When your Mercedes Benz S Class engine stops, the battery takes over to furnish the car with energy.
What are the distinctive alternator noises or sounds on my Mercedes Benz S Class and what are the causes?
I find out a knocking noise from the alternator of my Mercedes Benz S Class
One of the typical noises of a tired alternator on Mercedes Benz S Class is a knocking noise. This alternator sound on Mercedes Benz S Class will generally occur when your engine is idling, it can be associated with voltage drops that could affect the normal operation of electrical elements such as headlights for example. Often, it is a of both bearings of the alternator that is malfunctioning, to verify 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 Benz S Class is tired and you should consider replacing the bearing if it is the only reason otherwise the entire part.
I discover a grinding noise coming from the alternator of my Mercedes Benz S Class
If you are in the situation where the alternator of your Mercedes Benz S Class generates grinding sounds, in this case 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 often notice by looking more strongly 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 read this document to find all the necessary details to solve an accessory belt noise on Mercedes Benz S Class.
I discover a loud noise from the alternator of my Mercedes Benz S Class
Hearing a loud noise from the alternator of your Mercedes Benz S Class is quite regular, in fact, it emits an audible sound when producing the electrical pulses it generates. It is up to you to verify 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 recommend that you go to this document to find other ways to solve problem of noises from front end on Mercedes Benz S Class.
