Why won’t my Flex battery hold a charge?

A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old Flex battery?

We’ll recycle your car battery for you!

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

You can find affordable Flex batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

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.

What is the white, crusty substance accumulating on my Flex’s battery post?

The white, crusty stuff that can accumulate around Flex 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 Flex car battery?

Regularly inspecting and cleaning your battery terminals will help keep your Flex’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.

Where can I find a battery for my Flex?

At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Flex batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.

2017 Ford Flex Batteries

Get a New Ford Battery

Get a Battery for Your Ford Flex

Don’t let a dead battery stop you. Shop replacement car batteries for your 2017 Ford Flex at Firestone Complete Auto Care.

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Battery Size & Replacement for 2017 Ford Flex

Not sure what battery to get for your Ford Flex? Check the chart to find the right car battery size and cold cranking amps for your Flex.

Battery	Engine	Warranty		Cold Cranking Amps
65-1	V6/3.5L	Replacement 24 months	Performance months	850
65-2	V6/3.5L	Replacement 36 months	Performance months	850
65-AGM	V6/3.5L	Replacement 36 months	Performance months	750

BATTERIES
V6/3.5L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V6/3.5L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/3.5L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750

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Shopping for Ford Flex Car Batteries

Sadly, your Ford Flex won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. You want to replace your 2017 Ford Flex battery before it fails and leaves you stranded. Look out for symptoms of a faulty car battery. A lagging starter, an illuminated check engine light or battery signal, swollen battery case, corrosion-covered posts, or faded headlights may all indicate that your battery needs attention.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2017 Ford Flex running! Automotive batteries are just one of our many areas of expertise. Our technicians are well-acquainted with Ford’s service specs for Flex car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that fits your car perfectly, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for Flexs?

We only want what’s best for your Ford Flex, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using the latest innovative technology to satisfy the growing power requirements of modern vehicles A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your Flex and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

Making Your Flex’s New Battery Last

Got a new car battery installed in your 2017 Ford Flex? Good thinking! You can give your new battery a head start with proper care and attention. Give your new battery a hand by decreasing the number of short trips you take, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Commonly Asked Flex Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a Flex-specific battery question, stop by your nearest store. Our expert techs have the answers you need.

Why won’t my Flex battery hold a charge? A battery is in its final hour when it will no longer hold a charge. The battery might be old. Or, you may have been leaving your car doors ajar and the cabin light at night. Stop by for a complimentary battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old Flex battery? We’ll recycle your car battery for you!
How much will replacing my Ford Flex’s battery cost if I get a DieHard battery? You can find affordable Flex batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
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.
What is the white, crusty substance accumulating on my Flex’s battery post? The white, crusty stuff that can accumulate around Flex 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 Flex car battery? Regularly inspecting and cleaning your battery terminals will help keep your Flex’s electrical system running smoothly. Before cleaning, reference your owner’s manual for instructions on how to disconnect the battery cables. Once the cables have been disconnected, gently clean the terminals with a mixture of water and baking soda, a wire brush, and a rag.
Where can I find a battery for my Flex? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Flex batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.