What Are the Signs of a Failing Battery in My Vehicle?

July 26, 2024

Your vehicle's battery is its heartbeat, essential for starting the engine and powering electrical components. But like all parts, it has a lifespan and will eventually fail. Recognizing the signs of a failing battery can save you from the frustration and inconvenience of being stranded. Let's explore the key indicators that your battery might be on its last legs.


Slow Engine Crank


One of the most common signs of a failing battery is a slow engine crank. When you turn the key or press the start button, the engine turns over slowly and takes longer than usual to start. This sluggish response is due to the battery's diminished capacity to deliver a strong current to the starter motor.


If you notice your engine is cranking slowly, it's time to check your battery's health. You can use a multimeter to measure the voltage, or visit a professional technician for a thorough battery test. If the battery is old (typically over three years), it might be time for a replacement.


Dimming Headlights and Electrical Issues


Dimming headlights, flickering dashboard lights, or malfunctioning electronic accessories are red flags. These issues occur because a failing battery cannot maintain a consistent voltage, leading to insufficient power for your vehicle's electrical components.


Observe your headlights' brightness, especially when starting the car or using multiple electronic features simultaneously. If they dim or flicker, get your battery tested immediately. Sometimes, these symptoms might also indicate a problem with the alternator, so a professional diagnosis is recommended.


Dashboard Warning Light


Modern vehicles are equipped with a battery warning light on the dashboard. This light illuminates when the car's computer detects a problem with the battery or charging system. It's an early warning sign that something isn't right under the hood.


Don't ignore the battery warning light. While it might be a minor issue like a loose battery cable, it could also signify a failing battery or alternator. Schedule an inspection with Crowell Brothers Automotive to pinpoint and resolve the issue before it leads to a complete breakdown.


Swollen Battery Case


A swollen or bloated battery case is a severe sign of battery failure. This usually happens due to excessive heat, causing the battery's chemicals to react, leading to swelling. Overcharging or a malfunctioning voltage regulator can also cause this problem.


Inspect your battery visually every few months. If you notice any swelling, take your car to us immediately. A swollen battery is dangerous and can lead to leakage or explosion, posing a risk to you and your vehicle.


Corroded Battery Terminals


Corrosion on the battery terminals is a sign of leakage from the battery acid. This corrosion can impede the flow of electricity, leading to starting problems and other electrical issues. You might notice a white, ashy substance around the terminals.


Regularly check your battery terminals for corrosion. If you find any, clean it off with a mixture of baking soda and water using a wire brush. However, persistent corrosion might indicate a failing battery, so keep an eye on recurring issues.


Experiencing battery problems? Contact Crowell Brothers Inc. for a professional diagnosis and reliable battery replacement services.

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