Why won’t my Mountaineer battery hold a charge?

A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What happens to my old Mountaineer battery?

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

What’s the cost of DieHard batteries for Mercury Mountaineers?

You can find affordable Mountaineer 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 do car batteries last?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

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

The white, flaky stuff that can build up around your Mountaineer’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Mountaineer, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.

How do I remove corrosion from my Mountaineer 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 Mountaineer 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.

Who sells Mountaineer batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Mountaineer batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.

Car Batteries for 2009 Mercury Mountaineer

Get a New Mercury Battery

Mercury Mountaineer Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 2009 Mercury Mountaineer at Firestone Complete Auto Care.

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2009 Mercury Mountaineer Battery Replacement & Size

Not sure what battery to get for your Mercury Mountaineer? Use this chart to find the right battery size and CCAs for your Mercury Mountaineer.

Battery	Engine	Warranty		Cold Cranking Amps
65-1	V6/4.0L	Replacement 24 months	Performance months	850
65-2	V6/4.0L	Replacement 36 months	Performance months	850
65-AGM	V6/4.0L	Replacement 36 months	Performance months	750
65-1	V8/4.6L	Replacement 24 months	Performance months	850
65-2	V8/4.6L	Replacement 36 months	Performance months	850
65-AGM	V8/4.6L	Replacement 36 months	Performance months	750

BATTERIES
V6/4.0L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V6/4.0L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V6/4.0L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750
V8/4.6L - Battery: 65-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 850
V8/4.6L - Battery: 65-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 850
V8/4.6L - Battery: 65-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 750

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Shopping for Mercury Mountaineer Car Batteries

You can pretty much drive your Mercury Mountaineer until you don't want to anymore. But your Mountaineer's battery? Don't count on it to last forever. The average car battery lasts three to five years. You want to replace your 2009 Mercury Mountaineer battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A sluggish engine start, a blinking battery or check engine light, bloated battery case, corroded battery posts, or weak lights can all signal that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 2009 Mercury Mountaineer. Car batteries are one of our many specialties! Our expert technicians understand Mercury service recommendations for Mountaineer 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.

Firestone Has DieHard Batteries for Mountaineers

We know what’s best for your Mercury Mountaineer, which is why we exclusively carry the best. Your Mountaineer needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard Mountaineer batteries surpass expectations and house the latest technology to meet the increasing power demands of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Mercury Mountaineer and drive with confidence knowing that performance will be there when you're counting on it. That's the kind of battery we deliver.

Caring for a New Mercury Mountaineer Battery

Have you recently had a fresh battery installed in your Mercury Mountaineer? Good thinking! You can give your new battery a head start with proper care and attention. turning off all of the lights when you leave your vehicle, cutting back on unnecessary short trips, keeping your battery posts clean, and avoiding radio and electronic component use when the engine is off.

Answers to Your Mountaineer Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have battery questions that are Mercury Mountaineer-specific, stop by your nearest store. Our technicians have the answers.

Why won’t my Mountaineer battery hold a charge? A car battery that needs to be jump-started every time is as good as dead. The battery may be too old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old Mountaineer battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercury Mountaineers? You can find affordable Mountaineer 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 do car batteries last? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
What is the white, crusty substance accumulating on my Mountaineer’s battery post? The white, flaky stuff that can build up around your Mountaineer’s battery terminals is known as corrosion. Acid leaking from your vehicle’s battery post can have a chemical reaction with the air, leading to an accumulation of the white, powdery substance over time. Corrosion can affect the flow of electricity between your battery and the electrical system in your Mountaineer, possibly causing issues with electrical performance and starting. If left unaddressed for long enough, it may even cause your battery to prematurely fail.
How do I remove corrosion from my Mountaineer 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 Mountaineer 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.
Who sells Mountaineer batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Mountaineer batteries at our stores nationwide — and our Firestone Direct mobile vans can provide convenient on-site battery services. Learn more about our mobile battery services and book an appointment.