Did you ever had this trouble trying to start your car in the morning and it doesn’t work ? If it never happened to you , certainly you’ve already had that fear. So when you perceive an alternator noise on Audi A4, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce 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 Audi A4 and then what the causes and solutions to alternator noise on Audi A4 may be.alternator-noise-audi-a4

Role and alternator operation Audi A4

Alternator role

Your alternator is an vital component of your Audi A4. In fact, its goal 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 automobile is in motion, to provide power to the automobile in motion and to allow you to always have a sufficient energy source to be able to restart the next time.

Alternator functioning

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 spinning makes electricity. It is the engine motor itself that will provide the energy required by the alternator to generate the energy, via the accessory belt or alternator belt. When your Audi A4 engine stops, the battery takes over to provide the automobile with energy.

What are the several alternator noises or sounds on my Audi A4 and what are the causes?

I discover a knocking noise from the alternator of my Audi A4

One of the typical noises of a tired alternator on Audi A4 is a knocking noise. This alternator sound on Audi A4 will most of the time occur when your engine is idling, it can be connected to voltage drops that could affect the normal operation of electrical elements such as headlights for example. Most often, it is a of both bearings of the alternator that is faulty, 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 A4 is tired and you should consider changing the bearing if it is the only cause otherwise the whole part.

I perceive a grinding noise coming from the alternator of my Audi A4

If you are in the situation where the alternator of your Audi A4 generates grinding sounds, in this circumstance you will have to look into it more seriously. This sign can testify as for the knocking sound of a tired bearing, however , generally, we often realize by looking more carefully that it is the accessory belt that is loosened or worn and is therefore the cause 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 Audi A4.

I perceive a loud noise from the alternator of my Audi A4

Finding out a loud noise from the alternator of your Audi A4 is quite normal, in fact, it emits an audible sound when producing 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 recommend that you go to this content to find other ways to solve problem of noises from front end on Audi A4.