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, at least you’ve already had that fear. So when you listen to an alternator noise on Subaru Crosstrek, you can already see 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 discover the role and functions of the alternator in your Subaru Crosstrek and then what the causes and solutions to alternator noise on Subaru Crosstrek may be.
Role and alternator operation Subaru Crosstrek
Alternator role
Your alternator is an vital part of your Subaru Crosstrek. In fact, its goal is to give power to your entire electrical system: headlights, interior lighting, signalling, computer… It will have the goal of charging the battery once the vehicle is in motion, to provide power to the vehicle in motion and to allow you to always have a sufficient 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 makes electricity. It is the engine motor itself that will give the energy needed by the alternator to create the energy, via the accessory belt or alternator belt. When your Subaru Crosstrek engine stops, the battery takes over to give the vehicle with energy.
What are the different alternator noises or sounds on my Subaru Crosstrek and what are the causes?
I notice a knocking noise originating from the alternator of my Subaru Crosstrek
One of the characteristic noises of a tired alternator on Subaru Crosstrek is a knocking noise. This alternator sound on Subaru Crosstrek will most of the time occur when your engine is idling, it can be connected to voltage drops that could disturb the normal operation of electrical elements such as headlights for example. In many cases, it is a of both bearings of the alternator that is faulty, to examine it, use a multimeter on the terminals of your vehicle 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 Subaru Crosstrek is tired and you should consider 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 Subaru Crosstrek
If you are in the case where the alternator of your Subaru Crosstrek generates grinding sounds, in this circumstance you will have to look at it more seriously. This sign can testify as for the knocking sound of a tired bearing, however , generally, we generally notice by looking more meticulously that it is the accessory belt that is loosened or worn and is therefore the reason of it. In this circumstance, we encourage that you read this article to find all the necessary information to solve an accessory belt noise on Subaru Crosstrek.
I listen to a loud noise from the alternator of my Subaru Crosstrek
Experiencing a loud noise from the alternator of your Subaru Crosstrek is quite normal, in fact, it emits an audible sound when creating the electrical pulses it generates. It is up to you to examine 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 have a look this article to find other ways to solve problem of noises from front end on Subaru Crosstrek.
