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 notice an alternator noise on Audi A5, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this article to help you find the sources of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Audi A5 and then what the causes and solutions to alternator noise on Audi A5 may be.
Role and alternator operation Audi A5
Alternator role
Your alternator is an vital part of your Audi A5. Indeed, its goal is to provide power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission of recharging 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
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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 generates electricity. It is the engine motor itself that will furnish the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Audi A5 engine stops, the battery takes over to furnish the car with energy.
What are the different alternator noises or sounds on my Audi A5 and what are the causes?
I notice a knocking noise coming from the alternator of my Audi A5
One of the typical noises of a tired alternator on Audi A5 is a knocking noise. This alternator sound on Audi A5 will generally occur when your engine is idling, it can be associated with voltage drops that could affect the normal operation of electrical parts such as headlights for example. Often, it is a of both bearings of the alternator that is defective, to verify it, use a multimeter on the terminals of your car 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 Audi A5 is tired and you should think about replacing the bearing if it is the only reason otherwise the complete part.
I notice a grinding noise coming from the alternator of my Audi A5
If you are in the situation where the alternator of your Audi A5 generates grinding sounds, in this circumstance you will have to check it more seriously. This sign can testify as for the knocking sound of a tired bearing, but in most cases, we often 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 encourage that you consult this document to find all the necessary information to solve an accessory belt noise on Audi A5.
I notice a loud noise from the alternator of my Audi A5
Experiencing a loud noise from the alternator of your Audi A5 is quite regular, in fact, it produces 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 encourage that you look into this document to find other ways to solve problem of noises from front end on Audi A5.
