This is another charging system issue, like a dead battery, that won’t let you start your car. If your car won’t start, but your battery is fine, chances are you have a bad alternator. Bad AlternatorĪnother electrical component, the alternator, is a generator responsible for distributing electricity to the car and recharging the battery. Since this requires working with metal tools around a car battery, it’s best to have a professional handle the battery corrosion or bad connection situation for safety. However, if they aren’t loose but corroded or dirty, you should clean the battery terminals before reattaching or getting them replaced. If they move, the battery terminals are loose, and you need to make them tight. Then try to twist and turn the cable connections at the battery terminal. Bad Battery ConnectionĬars won’t start if the cable connections on their car batteries are ripped or loose.Īnother probable cause could be a corroded battery terminal that’s blocking the flow of electricity. If the battery voltage reading is low, you may have a weak battery and will need to charge or replace the battery. If you don’t know how to jump start a car with a jumper cable, look at your owner’s manual for help or call a mechanic.Ī mechanic will use a battery tester or multimeter to analyze the state of your car battery. You’ll need another car’s good battery or a portable jump starter to charge your weak battery. Your car displays the battery symbol, hinting at your battery troublesĪlways keep a jumper cable in your car’s trunk for emergencies like this.Flickering or non-functioning headlights.It’s hard to start your car on a cold morning.You don’t see the instrument panel or dashboard lights turn on.During an engine crank, you won’t hear the engine turning over.Here’re some tell-tale signs of faulty car batteries: How can you tell if you have a dead battery or a flat battery ? If you have a dead car battery (one that contains no power), it won’t start. Your car battery is an important electrical component that stores the power necessary to run your vehicle. Here’s a run-through of the more common ones and what you can do about them: 1. There can be many reasons why your car won’t start, even if you have your regular car maintenance done.
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