Who hasn’t found himself in the situation where his car doesn’t start one morning on the way to work? If that didn’t happen to you, perhaps you’ve already had that apprehension. So when you perceive an alternator noise on Volkswagen Passat 7, you can already imagine yourself breaking down, stuck waiting for the tow truck. That’s why our team has decided to produce this post to help you locate the origins of alternator sounds. In this article, you will first learn the role and functions of the alternator in your Volkswagen Passat 7 and then what the causes and solutions to alternator noise on Volkswagen Passat 7 may be.
Role and alternator operation Volkswagen Passat 7
Alternator role
Your alternator is an essential part of your Volkswagen Passat 7. In fact, its mission is to generate power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task 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 functions on an electrical principle that has been used for decades, the principle of copper coil wound around a magnet . This coil while spinning produces electricity. It is the engine motor itself that will give the energy requested by the alternator to create the energy, via the accessory belt or alternator belt. When your Volkswagen Passat 7 engine stops, the battery takes over to give the vehicle with energy.
What are the distinctive alternator noises or sounds on my Volkswagen Passat 7 and what are the causes?
I perceive a knocking noise originating from the alternator of my Volkswagen Passat 7
One of the characteristic noises of a tired alternator on Volkswagen Passat 7 is a knocking noise. This alternator sound on Volkswagen Passat 7 will most of the time occur when your engine is idling, it can be connected to voltage drops that could disrupt the normal operation of electrical components such as headlights for example. In general, it is a of both bearings of the alternator that is malfunctioning, to verify 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 Volkswagen Passat 7 is tired and you should think about changing the bearing if it is the only cause otherwise the complete part.
I perceive a grinding noise coming from the alternator of my Volkswagen Passat 7
If you are in the situation where the alternator of your Volkswagen Passat 7 generates grinding sounds, in this circumstance you will have to check it more seriously. This symptom can testify as for the knocking sound of a tired bearing, however , in most cases, we generally realize by looking more meticulously that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this circumstance, we advise that you look for advice this document to find all the necessary details to solve an accessory belt noise on Volkswagen Passat 7.
I perceive a loud noise from the alternator of my Volkswagen Passat 7
Listening a loud noise from the alternator of your Volkswagen Passat 7 is quite typical, 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 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 have a look this document to find other ways to solve problem of noises from front end on Volkswagen Passat 7.
