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 might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead Mountaineer battery?

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

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

Mercury Mountaineer batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.

How long is a car battery good for?

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 Mountaineer’s battery post?

If you notice white, crusty stuff around the battery terminals of your Mountaineer, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your Mountaineer’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean a corroded Mountaineer battery terminal?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Where can I find a battery for my Mountaineer?

Your local Firestone Complete Auto Care sells and installs Mountaineer batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2006 Mercury Mountaineer Car Batteries

Get a New Mercury Battery

Get a New Mercury Mountaineer Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2006 Mercury Mountaineer today and schedule a quick installation at Firestone Complete Auto Care.

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2006 Mercury Mountaineer Battery Replacement & Size

Need more info about Mercury Mountaineer batteries? 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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Buying a Replacement Battery for Mercury Mountaineer

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. Generally, car batteries last from three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Mercury Mountaineer stranded. Look out for symptoms of a faulty car battery. A sluggish engine start, a blinking battery or check engine light, swollen battery case, corrosion-covered posts, and subpar electrical performance can all be signs that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2006 Mercury Mountaineer running! Car batteries are only one of our many strong suits. Our expert technicians understand Mercury service recommendations for Mountaineer battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for Mountaineers?

Your Mercury Mountaineer deserves the best, which is why we exclusively carry the best. You need a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard Mountaineer batteries surpass expectations using state-of-the-art advancements to fuel the expanding power requirements of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your Mountaineer and get behind the wheel with confidence. Why? Because performance will be there when you need it most. That’s why you should choose batteries from Firestone Complete Auto Care.

Caring for a New Mercury Mountaineer Battery

Did you recently have a new 2006 Mercury Mountaineer car battery installed? Congrats! You can give your new battery a head start with proper care and attention. Help extend your car battery’s life by limiting short trips, cleaning your battery posts, 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, visit your nearest store. Our technicians are happy to help.

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 might be old. Or, you may have a habit of leaving your car doors open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead Mountaineer battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercury Mountaineers? Mercury Mountaineer batteries can be affordable, especially when there's an available battery coupon. The best part is every DieHard battery comes with a free replacement warranty and extra coverage with DieHard Assurance.
How long is a car battery good for? 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 Mountaineer’s battery post? If you notice white, crusty stuff around the battery terminals of your Mountaineer, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your Mountaineer’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean a corroded Mountaineer battery terminal? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Where can I find a battery for my Mountaineer? Your local Firestone Complete Auto Care sells and installs Mountaineer batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.