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 , at least you’ve already had that apprehension. So when you discover an alternator noise on Mercedes C class, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this article to help you locate the origins of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Mercedes C class and then what the causes and solutions to alternator noise on Mercedes C class may be.
Role and alternator operation Mercedes C class
Alternator role
Your alternator is an fundamental part of your Mercedes C class. 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 vehicle is in motion, to provide power to the vehicle in motion and to let you to always have a enough energy source 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 makes electricity. It is the engine motor itself that will furnish the energy needed by the alternator to create the energy, via the accessory belt or alternator belt. When your Mercedes C class engine stops, the battery takes over to furnish the vehicle with energy.
What are the several alternator noises or sounds on my Mercedes C class and what are the causes?
I hear a knocking noise caused by the alternator of my Mercedes C class
One of the characteristic noises of a tired alternator on Mercedes C class is a knocking noise. This alternator sound on Mercedes C class will most of the time occur when your engine is idling, it can be associated with voltage drops that could disturb 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 verify it, use a multimeter on the terminals of your vehicle 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 C class is tired and you should consider swapping the bearing if it is the only cause otherwise the whole part.
I discover a grinding noise coming from the alternator of my Mercedes C class
If you are in the situation where the alternator of your Mercedes C class produces 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 generally, we generally realise by looking more closely that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this circumstance, we encourage that you read this document to find all the necessary information to solve an accessory belt noise on Mercedes C class.
I discover a loud noise from the alternator of my Mercedes C class
Experiencing a loud noise from the alternator of your Mercedes C class is quite regular, 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 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 encourage that you look into this document to find other ways to solve problem of noises from front end on Mercedes C class.
