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 perceive an alternator noise on Toyota Yaris, 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 find the origins of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Toyota Yaris and then what the causes and solutions to alternator noise on Toyota Yaris may be.
Role and alternator operation Toyota Yaris
Alternator role
Your alternator is an fundamental component of your Toyota Yaris. In fact, its mission is to generate 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 reserve to be able to restart the next time.
Alternator functioning
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The alternator operates on an electrical principle that has been used for decades, the principle of copper coil wound around a magnet . This coil while spinning makes electricity. It is the engine itself that will provide the energy required by the alternator to produce the energy, via the accessory belt or alternator belt. When your Toyota Yaris engine stops, the battery takes over to provide the vehicle with energy.
What are the different alternator noises or sounds on my Toyota Yaris and what are the causes?
I listen to a knocking noise from the alternator of my Toyota Yaris
One of the typical noises of a tired alternator on Toyota Yaris is a knocking noise. This alternator sound on Toyota Yaris will most of the time appear when your engine is idling, it can be linked to voltage drops that could disturb the normal operation of electrical components such as headlights for example. In most cases, it is a of both bearings of the alternator that is faulty, to check it, use a multimeter on the terminals of your vehicle with the engine running and you must obtain 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 Toyota Yaris is tired and you should think about swapping the bearing if it is the only cause otherwise the complete part.
I perceive a grinding noise coming from the alternator of my Toyota Yaris
If you are in the situation where the alternator of your Toyota Yaris causes grinding sounds, in this case you will have to look into it more seriously. This symptom can testify as for the knocking sound of a tired bearing, but in general, we generally realise by looking more strongly that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we suggest that you look for advice this article to find all the necessary details to solve an accessory belt noise on Toyota Yaris.
I perceive a loud noise from the alternator of my Toyota Yaris
Experiencing a loud noise from the alternator of your Toyota Yaris is quite typical, in fact, it emits an audible sound when creating the electrical pulses it generates. It is up to you to check 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 read this article to find other ways to solve problem of noises from front end on Toyota Yaris.
