What Does an Alternator Do?

Car Alternator


The alternator in your vehicle is an electrical generator. To keep your vehicle’s electrical systems going and battery charged while running, the alternator converts mechanical energy to electrical energy. So the answer to a common question from Hoover drivers, “what does an alternator do?” Simply put, it uses your gas engine as its energy source to keep your vehicle running. Read more alternator information and learn about when and how to service your alternator with Brady Kilmury CDJR. 

What Are the Signs of a Bad Alternator? 

Your alternator may be on its way out if you notice any of the symptoms we mention below. Visit our service center near Hoover as soon as you can:

  • If your battery warning light turns on your dashboard
  • If your headlights or interior lights seem dimmer than usual
  • If you smell burning rubber under the hood
  • The outlets for your devices aren’t charging
  • Whining or screeching sound after the vehicle has started
  • Your vehicle is unable to start

The Differences Between a Failing Alternator vs. Battery

It can be easy to confuse a failing battery and a failing alternator as many drivers also confuse their functions. You can identify this issue best by waiting until the vehicle is unable to start. Jump start your engine, and if it dies immediately the issue is likely your alternator. You can have one of our certified technicians at Brady Kilmury CDJR check out your alternator by scheduling an appointment online or over the phone near Tuscaloosa. 

How Long Should an Alternator Last?

The general lifetime of your alternator may be around 80,000 and 150,000 miles — which is around seven years for the average driver. Your alternator may wear out prematurely due to a few different factors:

  • Alternator quality
  • Driving and road conditions
  • Power drain on the alternator

How Much is an Alternator?

Each vehicle requires a different alternator, and it isn’t possible to say how much yours will cost. However, you can call our team at Brady Kilmury CDJR to get a free quote. We have all kinds of information on a variety of makes and models as well as the training experience to properly install the parts. How much is an alternator? You can expect roughly $130-$250 depending on your vehicle. 

Come to Brady Kilmury CDJR for Your New Alternator 

You can contact our parts department at Brady Kilmury CDJR to order the alternator if you want to replace it yourself. Our service team will help you find the alternator for your vehicle, and get the best price. Schedule an appointment with our service team and we can take care of the alternator replacement for you. Contact us with any questions or come visit us near Tuscaloosa to take care of your vehicle.

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