Did you ever had this trouble trying to start your car in the morning and it doesn’t work ? If that didn’t happen to you, certainly you’ve already had that fear. So when you listen to an alternator noise on Volkswagen Passat , you can already imagine yourself breaking down, stuck awaiting the tow truck. That’s why our team has decided to write this content to support you find the sources of alternator sounds. In this article, you will first see the role and operation of the alternator in your Volkswagen Passat and then what the causes and solutions to alternator noise on Volkswagen Passat may be.
Role and alternator operation Volkswagen Passat
Alternator role
Your alternator is an fundamental part of your Volkswagen Passat . Indeed, its objective is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the task of recharging the battery once the car is in motion, to provide power to the car 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 operates on an electrical principle that has been used for decades, the concept of copper coil wound around a magnet . This coil while rotating creates electricity. It is the engine motor itself that will furnish the energy requested by the alternator to produce the energy, via the accessory belt or alternator belt. When your Volkswagen Passat engine stops, the battery takes over to furnish the car with energy.
What are the several alternator noises or sounds on my Volkswagen Passat and what are the causes?
I discover a knocking noise caused by the alternator of my Volkswagen Passat
One of the typical noises of a tired alternator on Volkswagen Passat is a knocking noise. This alternator sound on Volkswagen Passat will most of the time show up when your engine is idling, it can be linked to voltage drops that could affect the normal operation of electrical parts such as headlights for example. In many cases, it is a of both bearings of the alternator that is defective, to check 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 recharging your battery well. If the value is lower, the alternator of your Volkswagen Passat is tired and you should think about swapping the bearing if it is the only cause otherwise the entire part.
I listen to a grinding noise coming from the alternator of my Volkswagen Passat
If you are in the situation where the alternator of your Volkswagen Passat generates grinding sounds, in this case you will have to look into it more seriously. This sign can testify as for the knocking sound of a tired bearing, however , usually, we generally notice by looking more closely that it is the accessory belt that is loosened or worn and is therefore the cause of it. In this case, we advise that you consult this content to find all the necessary information to solve an accessory belt noise on Volkswagen Passat .
I listen to a loud noise from the alternator of my Volkswagen Passat
Listening a loud noise from the alternator of your Volkswagen Passat is quite typical, in fact, it produces an audible sound when producing the electrical pulses it generates. It is up to you to check 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 content to find other ways to solve problem of noises from front end on Volkswagen Passat .
