If there was enough juice for you to start the car, then you can safely drive the car on however much charge is remaining, but it won't last long - maybe 30 to 60 minutes max. Either way, it's something you want to check out. It could also mean there is a minor problem with the battery like corrosion. If it stays on while the car is running, it probably means there's something wrong with the alternator. The battery light comes on when you start your car, and it might linger for a second or two, but it usually turns off pretty quickly. So, the light is telling you "your alternator is not properly charging." It's not telling you "your battery is bad or needs to be replaced immediately." You don't have enough information yet. It looks like a little battery, or sometimes it says "Battery." A simple circuit looks at the voltage that the alternator is producing and turns the battery light on if that voltage is low. If the light remains on, you probably have an alternator issue.Because your car is so dependent on the battery, any car with a combustion engine and a 12-volt battery has a light on the dashboard that warns you if the recharging system fails. If the light turns off, you have likely fixed the issue. Once you have worked through these steps, test your battery by starting your engine. Look for major cracks or breakages in the belt – or complete loss of the belt.Īlthough fuses do not cause direct issues with battery charging issues, it’s worth looking to see if any fuses are blown and replace them. If you are having issues with overheating and loss of power steering, it’s likely caused by the serpentine belt. Take a look at your alternator for any loose or missing electrical connections.
Remove any corrosion and make sure the clamps are secure on the terminals. There are steps you can take to troubleshoot the issue to determine why the battery light has come on:Ĭheck your vehicle’s battery for signs of corrosion on or damage to the terminals. If either of these events occur, turn your vehicle off immediately. Watch for overheating and loss of power steering. This includes the air conditioning, heating, stereo, interior lights, heated seats/mirrors, phone chargers and blue tooth accessories. If your battery light comes on, you should immediately turn off everything electrical in your vehicle except for the headlights in order to conserve whatever charge is left in the battery. What to do if your battery light comes on: If you continue driving, your battery will eventually drain and your vehicle will stop working.
If the light comes on and stays on while driving, this means that your alternator is running solely on energy stored in the battery. The light works on a circuit that measures the voltage produced by the alternator – the light turns on if the amount of voltage produced is low.īasically, the light indicates a battery charging problem. The main purpose of your vehicle’s battery light is to warn you if the recharging system has failed in some way, meaning that your battery is no longer charging and is simply running on whatever charge it has left.
Once blown, electrical power is prevented from reaching devices on that circuit. They are designed to “blow” when the current flow of a circuit reaches unsafe levels. Your vehicle’s electrical system also includes fuses, which are necessary in preventing over-voltage and short circuiting. It maintains effective and smooth operation of your alternator, power steering pump, air conditioning and – in some vehicles – your water pump. The serpentine (or drive) belt, named for its long and winding appearance, drives the alternator via the engine. The alternator, located next to your engine, also recharges the battery as your engine is running, ensuring that once your vehicle is turned off there is enough power in the battery to start it again. Once the vehicle is started, the alternator supplies power to your vehicle’s electrical system. This battery feeds an electrical current to the starter in order to get your engine started. Under the hood of your vehicle there is a 12-volt rechargeable battery.
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It’s best to determine as quickly as possible whether you can troubleshoot the issue or if you need a professional to take a look. When that happens, your vehicle will essentially “die” and even a boost from another vehicle will only provide you a small amount of power in the battery. While some warning lights on your dash don’t indicate an immediate issue, your battery warning light is one that you do not want to ignore.Ī battery warning light means that, for some reason, your battery is not recharging and it’s only a matter of time before driving your vehicle drains whatever charge is does have.
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