Why won't my Mustang battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead Mustang battery?

We recycle it, taking care of both your car and the Earth.

How much will replacing my Ford Mustang’s battery cost if I get a DieHard battery?

Get affordable prices on Ford Mustang batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.

How long can I expect my car battery to last?

A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.

Why is there white, flaky stuff around my Mustang’s battery post?

The white, crusty stuff that can accumulate around Mustang car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.

What do I do about corrosion on my Mustang car battery?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Mustang owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I find a battery for my Mustang?

You can shop for Mustang batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.

2003 Ford Mustang Car Batteries

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Get a Battery for Your Ford Mustang

Don't let a failing battery slow you down. Shop replacement batteries for 2003 Ford Mustangs today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 2003 Ford Mustang

Need more info about Ford Mustang batteries? Use this chart to find the right battery size and CCAs for your Ford Mustang.

Battery	Engine	Warranty		Cold Cranking Amps
58-2	V6/3.8L	Replacement 24 months	Performance months	550
59-3	V8/4.6L	Replacement 24 months	Performance months	590

BATTERIES
V6/3.8L - Battery: 58-2 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 550
V8/4.6L - Battery: 59-3 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 590

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Shopping for Ford Mustang Car Batteries

Sadly, your Ford Mustang won't last forever. Neither will its battery. Generally, car batteries last from three to five years. You want to replace your 2003 Ford Mustang battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated battery or check engine light, swollen battery case, corroded battery terminals, or dim headlights can all be signs that your battery needs attention.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. With computerized testing we can see how much charge is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2003 Ford Mustang running! Car batteries are only one of our many strong suits. Our technicians are familiar with Ford-specific recommendations for Mustang battery CCAs and reserve capacity. Get help figuring out the battery size that matches your vehicle, and schedule a weekday or weekend battery replacement service for your car.

Find the Right DieHard Battery for Your Mustang

Your Ford Mustang deserves the best, which is why we carry just that. Your Mustang needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the expanding power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your Mustang and have the peace of mind that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 2003 Ford Mustang Battery

Have you recently had a fresh battery installed in your Ford Mustang? Good thinking! You can give your new battery a head start with proper care and attention. flipping the dome lights and headlights off when exiting the car, limiting short trips, keeping the battery posts corrosion-free, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your Mustang Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a Mustang-specific battery question, visit your nearest store. Our expert techs have the answers you need.

Why won't my Mustang battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your local Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead Mustang battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Ford Mustang’s battery cost if I get a DieHard battery? Get affordable prices on Ford Mustang batteries by using one of our limited-time battery deals. Plus, all DieHard car batteries come with a free replacement warranty and extra coverage with DieHard Assurance.
How long can I expect my car battery to last? A car battery normally lasts three to five years, but this number can vary based on battery type, your driving habits, and battery maintenance.
Why is there white, flaky stuff around my Mustang’s battery post? The white, crusty stuff that can accumulate around Mustang car battery terminals is called corrosion. It is caused by a chemical reaction between the battery acid and the air, which creates a white, powdery substance that can build up on the terminals over time. Corrosion can interfere with the flow of electricity between the battery post and the car's electrical system, sometimes leading to poor electrical performance, difficulty starting, and even premature battery failure.
What do I do about corrosion on my Mustang car battery? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your Mustang owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.
Where can I find a battery for my Mustang? You can shop for Mustang batteries at your local Firestone Complete Auto Care, and our expert technicians will even handle the installation. Don’t have time to visit our store? Our Firestone Direct mobile vans can come to you for battery installations! Learn more about our mobile battery services.