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 listen to an alternator noise on Audi A7, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to write this content to support you find the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your Audi A7 and then what the causes and solutions to alternator noise on Audi A7 may be.
Role and alternator operation Audi A7
Alternator role
Your alternator is an important part of your Audi A7. In fact, its task is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the mission of charging the battery once the car is in motion, to provide power to the car in motion and to allow you to always have a enough energy reserve 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 creates electricity. It is the engine itself that will furnish the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Audi A7 engine stops, the battery takes over to furnish the car with energy.
What are the different alternator noises or sounds on my Audi A7 and what are the causes?
I find out a knocking noise caused by the alternator of my Audi A7
One of the typical noises of a tired alternator on Audi A7 is a knocking noise. This alternator sound on Audi A7 will generally occur when your engine is idling, it can be linked to 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 malfunctioning, to verify it, use a multimeter on the terminals of your car with the engine running and you must look for a value between 12 and 14.7 volts, which means that your alternator is charging your battery well. If the value is lower, the alternator of your Audi A7 is tired and you should think about swapping the bearing if it is the only reason otherwise the complete part.
I listen to a grinding noise coming from the alternator of my Audi A7
If you are in the situation where the alternator of your Audi A7 causes grinding sounds, in this case you will have to look at it more seriously. This indicator can testify as for the knocking sound of a tired bearing, but usually, we often realize by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this case, we advise that you look for advice this document to find all the necessary information to solve an accessory belt noise on Audi A7.
I listen to a loud noise from the alternator of my Audi A7
Listening a loud noise from the alternator of your Audi A7 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 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 advise that you look into this document to find other ways to solve problem of noises from front end on Audi A7.
