How To Reset Battery Light: What Causes It [Light Stays On] (2023)

The battery light is on. What do I do? This question disturbs many car owners at times; if you are wondering the same, don’t worry! It’s really easy and can be done in just a few minutes. Here’s how you do it.

Check the battery terminals for corrosion and clean them off with a wire brush or terminal cleaner. Next, make sure they are tight and free of corrosion. Now, test the charging system with a voltmeter. If the charging system is working properly, you can now reset the battery light by disconnecting and reconnecting the cables.

How To Reset Battery Light: What Causes It [Light Stays On] (1)

So, whether your car won’t start or the check engine light is on, read on for our simple guide on how to reset your battery light. Let’s get started!

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What Does The Battery Light Mean In A Car?

The battery light is one of the most important lights on your car’s dashboard. It is usually located near the speedometer and displays a picture of a battery. It lets you know when the battery is running low and needs to be recharged. Light comes on when there is an issue with the electrical system in your car, and you should take it seriously.

There are several reasons why the battery light might come on, and it is essential to diagnose the problem as soon as possible. A loose battery connection is one of the most common reasons for the light to come on. Another common reason for the battery light to come on is an alternator problem.

How To Reset Battery Light?

If your battery light is on, your car’s battery is not being charged. There are a few things you can do to reset the light:

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  • Check your car’s alternator. If it’s not working properly, it could be the reason your battery isn’t charging.
  • Make sure all of your car’s lights are turned off. If any of them are on, they could be draining your battery.
  • Try starting your car with the headlights off. If the battery light comes on, it means your battery is low and needs to be charged.
  • If there are no issues with the car’s battery or charging system, then you can reset the light by disconnecting the negative terminal of the battery for a few minutes.

If none of these things work, you may need to replace your car’s battery.

What Does a Check Charge System Mean?

A check charge system is an important part of any car. It helps to ensure that your car’s battery is properly charging. If this system is not working properly, the battery can become overcharged or undercharged.

It can also help to extend the life of your battery. Many people do not realize how important this system is, so their cars may not be running as efficiently as they could be. The check charge system can indicate several problems, such as shortened battery life, decreased performance, and even complete engine failure.

In order to avoid these problems, it is important to have the check charge system in your car checked regularly. This system is typically located under the hood and is easy to access. However, if you are not comfortable working with electrical components, you may want to take your car to a professional mechanic to have the system checked.

Here’s a look at what the check charge system means for different car models:


Ford check charge system is a message that may appear on your vehicle’s instrument panel. It indicates that the charging system is not working properly and needs to be checked by a qualified technician.

A warning light may also accompany this message on the dash. If you see this message, having your vehicle checked out as soon as possible is essential to avoid being stranded with a dead battery.

See Also: What Is The Difference Between Ford STX Vs XLT?


The check engine light in your Mustang may be illuminated for several reasons. One possibility is that your vehicle has a problem with its charging system. A charging system issue can result in your car’s battery being unable to hold a charge or the alternator not providing enough power to keep the battery charged.

Charging system problems can sometimes be resolved by simply replacing the battery, but more severe issues may require the replacement of the alternator. Either way, it’s crucial to get the problem fixed as soon as possible to avoid any further damage to your Mustang.

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The Toyota will only be operating on battery power if the check charging system light illuminates. The battery won’t be able to recharge and will eventually run out, leaving You with a dead battery if the issue persists and Your charging system fails.

The alternator that should be recharging the vehicle’s battery is not functioning. The most likely cause is a defective alternator, while other possibilities include a short in the wiring or a broken drive belt that prevents the alternator from rotating.

Other Car Brands

Similarly, for some other car brands like Honda, a check engine light typically comes on when the charging system in your car isn’t working properly. This could be due to a faulty alternator, battery, or other electrical components. The check engine light will come on as a warning sign when the charging system cannot keep the battery sufficiently charged.

If you see this light, it’s important to take your car to a mechanic so they can diagnose the problem and make any necessary repairs.

What Causes Check Charging System Failure?

There are a few different things that can cause your check charging system light to come on. We have gathered the five most common causes of charge system failure. Let’s have a closer look:

Faulty Alternator

The alternator is one of the reasons for charging system failure. Alternators are designed to last around 100,000 miles, but they can sometimes fail sooner. If your alternator is starting to fail, you might notice that your car’s electrical systems are dimming or flickering. Another possible cause of this warning light includes a loose or damaged alternator belt.

Damaged Battery

As your car’s battery ages, it can become damaged and no longer be able to hold a charge. If this happens, it can cause your car’s charging system to fail, resulting in an unexpected loss of power and potentially leaving you stranded.

Broken Serpentine Belt

The serpentine belt is the common cause of charging system failure. The serpentine belt drives the alternator, so if it breaks, the alternator can’t do its job. Serpentine belts are made of rubber so that they can deteriorate over time. If you live in an area with extreme temperatures, that is likely that the serpentine belt to deteriorate faster.

Electrical Problems

A faulty voltage regulator is the most common electrical problem that can cause the charging system warning light to come on. The voltage regulator controls the amount of electricity that flows from the alternator to the battery. Too much electricity can drift to the battery if it fails, causing it to overheat and possibly catch fire.

Faulty Computer System

When your car’s computer system detects a problem with the charging system, it will usually trigger a “check charging system” warning light on the dash. This is intended to alert you that an issue may need to be addressed.

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Unfortunately, this warning light can sometimes come on in some cases, even when there’s nothing wrong with the charging system. This is often due to a faulty computer system in the car. If this is the case, you may see the warning light come on even when the charging system is working properly.

Why Is My Battery Light Still On After Replacing Battery?

You’ve replaced your car battery, but the battery light is still on; there are a few possibilities:

  • It could be that the new battery isn’t seated properly. Make sure that the battery terminals are clean and tight.
  • Another possibility is that there’s a problem with the charging system. This could be a loose connection, a blown fuse, or a bad alternator.
  • If the charging system isn’t working properly, it can’t charge the battery, and the light will stay on.

If you’re unsure what the problem is, it’s best to take your car to a mechanic and have them check it out. They’ll be able to diagnose the problem and get your car up and running again.

Check Out Battery Light On? New Alternator and Battery? Here’s Why!:

How To Reset Battery Light: What Causes It [Light Stays On] (2)

Can You Drive With A Battery Light On?

The answer is yes, but it’s not advisable. A battery light usually indicates an issue with your car’s charging system. This means that your battery isn’t being charged properly and could eventually die.

We recommend getting your battery tested if you can make it to a service station or auto parts store. It’s also a good idea to have a spare battery in emergencies. If your battery dies while you’re driving, don’t panic. Pull over to the side of the road and turn on your hazard lights. Then, call for a tow truck or roadside assistance.

(Video) Five Problems Cause Battery Warning Light on Dashboard

Tips For A Functional Battery Light

If your car’s battery light comes on, don’t ignore it! Take action immediately to stay away from being stranded with a dead battery. However, here are some tips to avoid such a situation and keep your car’s battery light functioning correctly:

  • Check your car’s battery regularly. An excellent way to do this is to check the voltage with a voltmeter.
  • Keep your car’s electrical system in good working order. This means making sure all of the connections are clean and tight.
  • Use a battery maintainer to keep your car’s battery charged. This will help to extend the life of your battery.

These tips will help you keep your car’s battery light properly functioning. By taking these precautions, you can avoid being stranded with a dead battery.


How long does it take for a battery light to reset?

Once the battery is replaced, it can take some time for the light to reset. Depending on the car, the light may take a few hours or even days to go off. However, once the light goes off, it should not come back unless there is another problem with the battery.

Why does my battery light stay on when the car is off?

There are a few reasons your battery light might stay on when the car is off. It could be a sign that your battery is going bad and needs to be replaced, or it could indicate a problem with your alternator. If you notice that your battery light is staying on, make sure to have your car checked out by a mechanic to diagnose the problem.

Can the battery light come on for no reason?

Yes, there are times when the light can come on for no apparent reason. If this happens, it’s essential to take note of any other symptoms that may be present and to have the car checked as soon as possible.

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Final Considerations

The battery light on a car is an important warning system. When it comes on, the driver should take the vehicle to a mechanic to find out what is wrong. Drivers can try to reset the light by disconnecting and reconnecting the battery. This is not always successful as sometimes the problem is worse.

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Why is my battery light on but my battery is fine? ›

Common reasons why the battery light is on include:

The battery cables are loose. There's too much acid corrosion on the battery terminals. The alternator is not charging the battery. The battery is defective from the manufacturer.

What would cause battery light to stay on? ›

An illuminated battery indicator can be caused by a number of issues, including: A loose or corroded battery cable. A problem with the alternator or voltage regulator. Damaged cells or plates inside the battery.

Why wont my battery light go off? ›

Battery Light FAQ

If the light turns and stays on, it might be that your alternator isn't generating enough voltage to charge it. Common causes can be a broken alternator belt, damaged battery cells or a failed alternator.

How long does it take for a battery light to reset? ›

The message can reset by itself, but the car needs to sit undisturbed for at least eight hours. Perhaps with your work/driving schedule the car doesn't sit long enough. Q: I have a headlight that is dim.

Can a fuse cause battery light to come on? ›

A blown fuse is another possible cause of the battery light coming on. If there is a problem with the electrical system in your car, it can cause the fuse to blow. If you think that your fuse might be blown, you'll need to take it to a mechanic or a repair shop to have it replaced.

Why is my battery light on when my battery and alternator are good? ›

If the battery light remains on even when the alternator is charging fine, you should be very alert. This means there's an issue with the alternator, battery, or built-in voltage regulator.

How do I turn off the battery light? ›

Simply remove the terminal covers, disconnect the battery cables, and give the terminals a hearty scrub. Tighten the cable clamps. Sometimes a car battery light comes on because there's a weak connection between your battery and the cables that connect to it.

Why is my battery light still on after I changed my alternator? ›

It is possible that the problems that you have been experiencing with the bad alternators have damaged the battery causing it to be weak. This would make the Battery Light come on. It is also possible that there is a problem with the fusible link or the alternator fuse for the charging system.

How do I reset my car after replacing the battery? ›

Resetting your car engine after replacing the battery
  1. Remove the positive terminal of the battery. This is the first step if you're resetting your computer. ...
  2. Leave the battery for a while. ...
  3. Reconnect the battery terminal. ...
  4. Start the car. ...
  5. Test drive the car.

Does disconnecting battery reset lights? ›

Disconnecting and reconnecting your battery will restart your vehicle's computer and clear the light. Drive an older vehicle around for a few days after repairs. The light will go off on its own once the computer resets.

Does factory reset reset battery? ›

No, factory resets do not do any harm to the battery. It only erases data from the phone. Thus note that you should backup all your documents and files before doing a factory reset. However, there is no effect on the battery.

What fuse is connected to the battery? ›

Cube fuses at the battery provide protection for the electrical circuits connected to your battery (as well as the battery itself) by eliminating unprotected sections of cable between the battery and the first fuse. A common circuit that uses a cube fuse at the battery is an inverter.

Can a faulty sensor cause battery light to come on? ›

Warning Light

If the sensor or the system associated with it has a problem that's affecting the battery's charge, it will light up the battery light.

How can you tell the difference between alternator and battery problems? ›

Jumpstart your car. If you can turn the engine on, but it dies shortly thereafter, your car alternator likely isn't able to charge the battery. On the other hand, if you jumpstart the car and later on it fails to start on its own, it's likely a dead battery.

Why does my car battery light come on but go off when I accelerate? ›

In these cases, you'll notice that your battery light comes on and goes off again when accelerating because it knows that there isn't enough power coming in from its source (the alternator). This issue can also be brought on by a loose connection or a damaged serpentine belt.

Can fuse cause alternator problems? ›

A blown alternator fuse will prevent the charging system from working properly, leading to a variety of problems that can mimic a bad alternator.

How do I get rid of check charging system? ›

9 Best Ways to Solve Issues with Your Charging System
  1. Replace the Battery. Change your battery if it is more than seven years old and has charging problems. ...
  2. Maintain the Battery. ...
  3. Clean the Charging System Parts. ...
  4. Check on the Wiring. ...
  5. Reduce the Accessories. ...
  6. Look at the Drive Belt. ...
  7. Drive Many Times. ...
  8. Replace the Alternator.

How do I know if my battery fuse is blown? ›

There are a few symptoms that can alert you to a blown car fuse. You can pull the fuse out of the board to inspect it. Look for signs of damage which include a noticeable gap in the wire or a dark metallic smear in the glass. If you see one of these symptoms, you should try to replace the fuse.

How do I know if my alternator is bad? ›

First, open the hood and start the car. While the engine is running, remove the negative cable from the battery. If the vehicle stalls or dies, the alternator is likely bad. This happens because the alternator is not generating enough electricity to keep the engine running on its own.

What happens if battery light is on car but battery is charged? ›

If the light comes on and stays on while driving, this means that your alternator is running solely on energy stored in the battery. If you continue driving, your battery will eventually drain and your vehicle will stop working.

Is it safe to drive my car with the battery light on? ›

It is unsafe to drive with your car battery light on. Issues that activate your car battery light, like a defective battery or faulty alternator, can cause your car to lose power. In these instances, your car won't operate as it normally would.

How do you tell if it is a dead battery or alternator? ›

Jumpstart your car. If you can turn the engine on, but it dies shortly thereafter, your car alternator likely isn't able to charge the battery. On the other hand, if you jumpstart the car and later on it fails to start on its own, it's likely a dead battery.

How do I turn off the battery light in my car? ›

Simply remove the terminal covers, disconnect the battery cables, and give the terminals a hearty scrub. Tighten the cable clamps. Sometimes a car battery light comes on because there's a weak connection between your battery and the cables that connect to it.

Why is the battery light on in my car after replacing battery? ›

The battery warning light in most cars indicates there is problem with the charging system as a whole, not just the battery. It sounds to me like you have a problem with your alternator. The airbag computer will set a code and turn on the warning light when the system voltage is too high, or too low.

What does the red battery light mean on my car? ›

The red battery light basically means that there is an issue with your alternator, your battery, or some other part of the charging system which could be as minor as cabling or as major as a computer malfunction.

Can AutoZone test my alternator? ›

Alternator Testing

Dim or flickering lights, dead battery, battery light on, trouble starting or other issues. How to get your alternator tested: Just to visit a nearby AutoZone. We'll test the alternator while it's still in the vehicle.

How can I test my car battery at home? ›

Connect the multimeter to the positive and negative battery terminals. If you don't have a voltage of around 12.6 volts, you may have a bad battery. Now start the car, and look for a revised voltage over 10. If your voltage drops below 5 when the car is running, it is bad and should be replaced right away.

Can an alternator drain a battery when the car is off? ›

But when the engine is off, the alternator can't recharge the battery, allowing little electrical mishaps to drain your battery entirely. The battery strain caused by these electrical whoopsies is known as a parasitic draw.


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