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 discover an alternator noise on Mercedes Classe E 4, you can already see yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this article to support you find the sources of alternator sounds. In this article, you will first see the role and operation of the alternator in your Mercedes Classe E 4 and then what the causes and solutions to alternator noise on Mercedes Classe E 4 may be.
Role and alternator operation Mercedes Classe E 4
Alternator role
Your alternator is an essential part of your Mercedes Classe E 4. In fact, its goal is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission 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 sufficient energy reserve 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 itself that will give the energy required by the alternator to produce the energy, via the accessory belt or alternator belt. When your Mercedes Classe E 4 engine stops, the battery takes over to give the automobile with energy.
What are the different alternator noises or sounds on my Mercedes Classe E 4 and what are the causes?
I discover a knocking noise coming from the alternator of my Mercedes Classe E 4
One of the characteristic noises of a tired alternator on Mercedes Classe E 4 is a knocking noise. This alternator sound on Mercedes Classe E 4 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 faulty, to examine it, use a multimeter on the terminals of your automobile with the engine running and you must get 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 E 4 is tired and you should think about changing the bearing if it is the only cause otherwise the complete part.
I discover a grinding noise coming from the alternator of my Mercedes Classe E 4
If you are in the case where the alternator of your Mercedes Classe E 4 causes 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, but in general, we generally notice by looking more strongly that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this circumstance, we recommend that you read this content to find all the necessary details to solve an accessory belt noise on Mercedes Classe E 4.
I discover a loud noise from the alternator of my Mercedes Classe E 4
Finding out a loud noise from the alternator of your Mercedes Classe E 4 is quite typical, in fact, it emits an audible sound when producing the electrical pulses it generates. It is up to you to examine 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 take a look at this content to find other ways to solve problem of noises from front end on Mercedes Classe E 4.
