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 , certainly you’ve already had that fear. So when you listen to an alternator noise on Mercedes Benz CLS Class, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this content to support you find the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your Mercedes Benz CLS Class and then what the causes and solutions to alternator noise on Mercedes Benz CLS Class may be.
Role and alternator operation Mercedes Benz CLS Class
Alternator role
Your alternator is an essential part of your Mercedes Benz CLS Class. In fact, its mission 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 automobile is in motion, to provide power to the automobile 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 functions on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while rotating generates electricity. It is the engine motor itself that will provide the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes Benz CLS Class engine stops, the battery takes over to provide the automobile with energy.
What are the different alternator noises or sounds on my Mercedes Benz CLS Class and what are the causes?
I listen to a knocking noise originating from the alternator of my Mercedes Benz CLS Class
One of the typical noises of a tired alternator on Mercedes Benz CLS Class is a knocking noise. This alternator sound on Mercedes Benz CLS Class will most of the time show up when your engine is idling, it can be associated with voltage drops that could disrupt the normal operation of electrical parts such as headlights for example. Most often, it is a of both bearings of the alternator that is malfunctioning, to check it, use a multimeter on the terminals of your automobile with the engine running and you must obtain 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 CLS Class is tired and you should consider replacing the bearing if it is the only reason otherwise the entire part.
I listen to a grinding noise coming from the alternator of my Mercedes Benz CLS Class
If you are in the situation where the alternator of your Mercedes Benz CLS Class causes grinding sounds, in this circumstance you will have to look at it more seriously. This symptom can testify as for the knocking sound of a tired bearing, however , in general, we often notice by looking more meticulously that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this circumstance, we recommend that you read this document to find all the necessary details to solve an accessory belt noise on Mercedes Benz CLS Class.
I listen to a loud noise from the alternator of my Mercedes Benz CLS Class
Listening a loud noise from the alternator of your Mercedes Benz CLS Class 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 recommend that you have a look this document to find other ways to solve problem of noises from front end on Mercedes Benz CLS Class.
