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 , certainly you’ve already had that fear. So when you notice an alternator noise on Audi S5, you can already see yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to produce this post to help you locate the sources of alternator sounds. In this article, you will first learn the role and operation of the alternator in your Audi S5 and then what the causes and solutions to alternator noise on Audi S5 may be.
Role and alternator operation Audi S5
Alternator role
Your alternator is an vital part of your Audi S5. Indeed, 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 automobile is in motion, to provide power to the automobile in motion and to allow you to always have a enough 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 rotating generates electricity. It is the engine itself that will furnish the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Audi S5 engine stops, the battery takes over to furnish the automobile with energy.
What are the different alternator noises or sounds on my Audi S5 and what are the causes?
I notice a knocking noise originating from the alternator of my Audi S5
One of the typical noises of a tired alternator on Audi S5 is a knocking noise. This alternator sound on Audi S5 will most of the time happen 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. In general, it is a of both bearings of the alternator that is defective, to verify it, use a multimeter on the terminals of your automobile 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 S5 is tired and you should think about changing the bearing if it is the only cause otherwise the entire part.
I notice a grinding noise coming from the alternator of my Audi S5
If you are in the case where the alternator of your Audi S5 causes grinding sounds, in this case you will have to check it more seriously. This warning sign can testify as for the knocking sound of a tired bearing, but usually, we often see 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 encourage that you consult this document to find all the necessary details to solve an accessory belt noise on Audi S5.
I notice a loud noise from the alternator of my Audi S5
Experiencing a loud noise from the alternator of your Audi S5 is quite typical, 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 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 go to this document to find other ways to solve problem of noises from front end on Audi S5.
