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 minimum you’ve already had that apprehension. So when you notice an alternator noise on Mercedes Cla, you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this content to support you find the sources of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Mercedes Cla and then what the causes and solutions to alternator noise on Mercedes Cla may be.
Role and alternator operation Mercedes Cla
Alternator role
Your alternator is an vital component of your Mercedes Cla. In fact, its objective is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of recharging the battery once the vehicle is in motion, to provide power to the vehicle in motion and to allow 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 produces electricity. It is the engine motor itself that will provide the energy requested by the alternator to produce the energy, via the accessory belt or alternator belt. When your Mercedes Cla engine stops, the battery takes over to provide the vehicle with energy.
What are the several alternator noises or sounds on my Mercedes Cla and what are the causes?
I notice a knocking noise from the alternator of my Mercedes Cla
One of the characteristic noises of a tired alternator on Mercedes Cla is a knocking noise. This alternator sound on Mercedes Cla will most of the time happen 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. In many cases, it is a of both bearings of the alternator that is defective, to examine it, use a multimeter on the terminals of your vehicle 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 Cla is tired and you should consider changing the bearing if it is the only reason otherwise the entire part.
I notice a grinding noise coming from the alternator of my Mercedes Cla
If you are in the case where the alternator of your Mercedes Cla generates grinding sounds, in this circumstance you will have to look at it more seriously. This indicator can testify as for the knocking sound of a tired bearing, however , in general, we generally see 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 look for advice this content to find all the necessary information to solve an accessory belt noise on Mercedes Cla.
I notice a loud noise from the alternator of my Mercedes Cla
Finding out a loud noise from the alternator of your Mercedes Cla is quite common, 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 recommend that you go to this content to find other ways to solve problem of noises from front end on Mercedes Cla.
