Why is my battery light coming on?

The battery light on your car comes on when there is a problem with your car's charging system. This could mean that the alternator is not working properly, or that there is a problem with the battery itself. If you see the battery light on, it is important to have your car checked by a mechanic as soon as possible.


Here are some of the reasons why your battery light might come on:


* **Loose or corroded battery cables:** If the battery cables are loose or corroded, they may not be able to provide enough power to the car. This can cause the battery light to come on.



* **Problem with the alternator:** The alternator is what charges the battery. If the alternator is not working properly, the battery will not be able to charge properly. This can cause the battery light to come on.

Blog Battery light coming on | J & H Automotive Inc.

* **Damaged cells or plates inside the battery:** If the battery cells or plates are damaged, they may not be able to hold a charge properly. This can cause the battery light to come on.



* **Faulty wiring in the car's electric charging system:** If there is a problem with the wiring in the car's electric charging system, it can cause the battery light to come on.


If you see the battery light on, it is important to have your car checked by a mechanic as soon as possible. The mechanic will be able to diagnose the problem and recommend the best course of action.

By jhautoinc December 12, 2025
They help prevent excess engine wear.
By jhautoinc December 9, 2025
This is why your car isn't warming up properly.
By jhautoinc December 3, 2025
It's an important component.
By jhautoinc November 28, 2025
This requires some testing...
By jhautoinc November 26, 2025
A bit of maintenance can save you.
By jhautoinc November 21, 2025
This is why an oil change is so important
By jhautoinc November 18, 2025
It's not always the seal that's the issue.
By jhautoinc November 14, 2025
A brake inspection can prevent this.
By jhautoinc November 12, 2025
It's more important than you think.
By jhautoinc November 8, 2025
Is it age or an issue?