![]() Eventually, this will drain it completely, leaving you stranded.īad Starter: It might not be the battery that’s the problem – if your starter has turned its last, your car won’t crank either. If the alternator dies, it won’t charge the battery, and all the power needs of your vehicle will come straight from the battery. These lights draw their power from the battery if the engine isn’t running, and can quickly drain a battery.ĭead Alternator: The alternator produces electricity while the engine is running, and is responsible for providing all the power needed for your engine, your accessories, and to recharge the battery. If this happens and the engine isn’t running, they’ll pull power straight from the battery, eventually killing it.ĭoor Not Fully Closed: If your door is open, then the dome light will be on, and other interior lights may also be on. If your car’s lights don’t have an automatic shutoff feature, they’ll stay on unless you physically turn them off. This is a normal part of vehicle maintenance, and your battery, starter and alternator should be tested regularly to ensure that you’re not stuck on the side of the road with a dead battery.Ĭar Lights Left On: With the advent of smarter automotive technology, this has become rarer, but it still occurs. All will eventually die and need to be replaced. Most last five years or so, while other batteries are heavy-duty and rated for more than this. ![]() Depending on the amount of “juice” left in the battery, you may have just enough power to turn on a few dash lights, or you may not even have enough for that.ĭead Battery: Batteries have a finite lifespan. If your battery is dead, none of those things will happen. The battery also produces electricity to feed the spark plugs, which ignite the fuel, and turn your car’s starter, which is responsible for actually turning the engine over and essentially jump-starting the combustion process. When the ignition is switched to on, electricity is sent to the main relay, and from there to the fuel pump (which sends gasoline to the engine for ignition), and the car’s computer. When you turn the ignition switch, several things happen, but all of them require voltage from the battery. Batteries operate based on a chemical reaction – acid and lead in the battery create a chemical reaction, which is then turned into an electric charge and stored in charging plates within the battery itself. Car batteries are crucial things – they’re responsible for providing the charge to turn over the ignition and crank the engine.
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