The alternator is a vital part of your car’s electrical system, and it is responsible for charging the battery and powering the electrical accessories while the engine is running. If your alternator starts to fail, it can cause a number of problems, including dimming lights, trouble starting the engine, and strange noises coming from under the hood.
What are the symptoms of a failing alternator?
There are several signs that your alternator may be failing. If you notice any of the following, it’s time to bring your car in for repair:
Dimming lights: The first sign of a failing alternator is often dimming headlights or taillights. When the alternator starts to fail, it doesn’t produce as much power, which means your lights may be dimmer than normal.
Trouble starting the engine: A failing alternator can also prevent your engine from starting. If you turn the key and nothing happens, or if the engine starts but then dies right away, it could be a sign that your alternator is on its way out.
Strange noises: If you hear strange grinding or squealing noises coming from under the hood, it could be indicative of a problem with the alternator bearings.
What causes an alternator to fail?
Alternators can fail for a number of reasons, including loose belts, worn-out bearings, bad brushes, or faulty diodes. In most cases, though, an alternator will simply wear out from age and use.
How much does it cost to replace an alternator?
The cost to replace an alternator will vary depending on the make and model of your car as well as whether you do it yourself or have it done at a shop. On average, though, you can expect to pay between $200 and $400 for a new alternator.
If you notice any signs that your alternator may be failing, it’s important to bring your car in for repair as soon as possible. A failing alternator can cause a number of problems, including dimming lights, trouble starting the engine, and strange noises coming from under the hood. The cost to replace an alternator will vary depending on the make and model of your car as well as whether you do it yourself or have it done at a shop. On average, though, you can expect to pay between $200 and $400 for a new alternator.