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 apprehension. So when you find out an alternator noise on Mercedes Classe B 3, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this post to help you find the sources of alternator sounds. In this article, you will first discover the role and functions of the alternator in your Mercedes Classe B 3 and then what the causes and solutions to alternator noise on Mercedes Classe B 3 may be.
Role and alternator operation Mercedes Classe B 3
Alternator role
Your alternator is an important component of your Mercedes Classe B 3. 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 car is in motion, to provide power to the car in motion and to allow you to always have a sufficient energy source to be able to restart the next time.
Alternator functioning
>
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 spinning makes electricity. It is the engine itself that will provide the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes Classe B 3 engine stops, the battery takes over to provide the car with energy.
What are the several alternator noises or sounds on my Mercedes Classe B 3 and what are the causes?
I notice a knocking noise caused by the alternator of my Mercedes Classe B 3
One of the characteristic noises of a tired alternator on Mercedes Classe B 3 is a knocking noise. This alternator sound on Mercedes Classe B 3 will generally appear 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. 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 car 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 Classe B 3 is tired and you should consider replacing the bearing if it is the only cause otherwise the whole part.
I find out a grinding noise coming from the alternator of my Mercedes Classe B 3
If you are in the situation where the alternator of your Mercedes Classe B 3 produces grinding sounds, in this circumstance you will have to look into it more seriously. This symptom can testify as for the knocking sound of a tired bearing, however , in most cases, we often see by looking more meticulously that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this circumstance, we suggest that you look for advice this article to find all the necessary information to solve an accessory belt noise on Mercedes Classe B 3.
I find out a loud noise from the alternator of my Mercedes Classe B 3
Experiencing a loud noise from the alternator of your Mercedes Classe B 3 is quite regular, in fact, it emits 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 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 suggest that you go to this article to find other ways to solve problem of noises from front end on Mercedes Classe B 3.
