Car Battery Light Flashing: What Does It Mean and How Is It Fixed?

On average and with proper care, car batteries can last between 3-5 years. Of course, factors such as how often you drive the vehicle, temperature, and the type of battery you have affect its lifespan.

Problems with a vehicle’s battery are quite common. So, what does it mean when you see the car battery light flashing?

Keep reading this guide to find out what the warning light means and how to fix the problem.

Causes of a Car Battery Light Flashing

Normally, the battery light illuminates when you first start your car. However, it usually disappears after a few seconds.

If the light starts to blink, it can be caused by several problems.

The Battery Needs a Replacement

A blinking battery light can indicate that it’s time to replace your car battery with a new one. Maybe your battery has reached the end of its lifespan or it was damaged.

Faulty wiring or bad grounds can also result in a car battery that doesn’t hold a charge. The solution is to install a new battery.

It’s Due to Battery Corrosion

Corrosion can accumulate on the top of your battery terminals, especially in warm weather. It’s a good idea to get in the habit of checking the battery for damage and cleaning the terminals.

Never touch battery corrosion with your bare hands though, as it can cause chemical burns, discomfort, itching, and more. Contact your local mechanic if you’re uncomfortable cleaning the battery or you don’t know how.

Faulty Wiring or Loose Cables

Sometimes, the problem lies within the battery or with the wiring. You’ll need a car diagnostics test to check for these types of problems, as they can be hard to detect without the right equipment.

The issue might be damaged cells or plates or the vehicle’s electrical charge system.

Loose cables can also cause a warning light to appear. Battery cables should fit snugly to provide a reliable connection. An auto technician can quickly perform this common car repair.

The Alternator Needs Replacing

An auto repair shop can easily check the function of your alternator with a diagnostics test. If the voltage is less than 12v, it can cause the battery dashboard light to illuminate and blink.

The fix is usually to replace the alternator. Your auto mechanic can install a new alternator or replace an alternator belt.

What if the Battery Light Is Still On?

If you perform some troubleshooting and the car battery light is flashing, you’ll need to bring your vehicle in for an inspection. If cleaning the terminals and tightening cables didn’t help, the problem is likely mechanical.

A quick battery check will identify the issue and your mechanic will suggest the appropriate course of action.

Car Battery Problems?

If you see the car battery light flashing, it could be due to any of the problems we listed above. The best way to spot and fix the issue is to bring it to a mechanic.

Here at Express Auto Service in Fredericksburg, VA, we offer various services, from a simple oil change to battery replacement and more. Visit our convenient location or contact us to book a service.

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