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 least you’ve already had that fear. So when you listen to an alternator noise on Mercedes Benz GLA Class, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this post 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 GLA Class and then what the causes and solutions to alternator noise on Mercedes Benz GLA Class may be.alternator-noise-mercedes-benz-gla-class

Role and alternator operation Mercedes Benz GLA Class

Alternator role

Your alternator is an fundamental component of your Mercedes Benz GLA Class. Indeed, its goal is to provide power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal 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 functions on an electrical principle that has been used for decades, the principle of copper coil wound around a magnet . This coil while rotating creates electricity. It is the engine itself that will furnish the energy required by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes Benz GLA Class engine stops, the battery takes over to furnish the automobile with energy.

What are the several alternator noises or sounds on my Mercedes Benz GLA Class and what are the causes?

I notice a knocking noise coming from the alternator of my Mercedes Benz GLA Class

One of the typical noises of a tired alternator on Mercedes Benz GLA Class is a knocking noise. This alternator sound on Mercedes Benz GLA Class will generally occur when your engine is idling, it can be associated with voltage drops that could affect the normal operation of electrical components 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 automobile with the engine running and you must look for 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 Benz GLA Class is tired and you should think about swapping the bearing if it is the only reason otherwise the whole part.

I listen to a grinding noise coming from the alternator of my Mercedes Benz GLA Class

If you are in the situation where the alternator of your Mercedes Benz GLA Class generates 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, but in most cases, we generally notice by looking more closely 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 consult this article to find all the necessary information to solve an accessory belt noise on Mercedes Benz GLA Class.

I listen to a loud noise from the alternator of my Mercedes Benz GLA Class

Listening a loud noise from the alternator of your Mercedes Benz GLA Class is quite typical, in fact, it emits an audible sound when creating the electrical pulses it generates. It is up to you to verify 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 recommend that you read this article to find other ways to solve problem of noises from front end on Mercedes Benz GLA Class.