How to Know if a Car Battery Is Dead

Wondering how to know if a car battery is dead? It isn’t always obvious, but sometimes the battery will give you clues that it may be near the end of its life. Ignoring the signs may result in your car failing to start at the most inopportune time.

Recognize the signs of a failing battery, and take action by scheduling an appointment at Superior Mazda.

Dimming Headlights

You may notice the headlights aren’t as bright and don’t provide the same level of visibility. It’s possible the lens cover could be dirty, or the bulbs are dying. However, it’s also possible the battery is dying, since it also powers the lights.

Power Windows Don’t Respond

The power windows may not roll up or down when you press the button, or the windows may only respond some of the time. The issue may stem from a blown fuse or faulty window motor. The other cause, though, is a failing battery.

Swollen Battery Case

If you look under the hood, you may notice the battery case appears swollen, or “bloated.” This may be due to a number of reasons, such as overcharging, high temperatures, or gases that form inside the battery cell. Whatever the case, this isn’t good for the battery.

Corrosion Buildup

Another sign when looking under the hood is the presence of corrosion on the connectors. This happens due to moisture buildup, an electrolyte leak, or a chemical reaction from the copper clamps. Regardless, this tends to happen to older batteries and is a sign of wear.

Learn How to Know if a Car Battery Is Dead in Bentonville, AR

Schedule routine maintenance at Superior Mazda. This includes a checkup of the battery and will help determine if it requires recharging or replacing. We look forward to helping you keep your car in top shape!