Why doesn’t my Mariner battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting 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 nearest Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my old Mariner battery?

We’ll recycle your car battery for you!

How much do DieHard batteries cost for your Mercury Mariner?

Get affordable prices on Mercury Mariner 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 do car batteries 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 Mariner’s battery post?

The white, flaky stuff that can build up around your Mariner’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 Mariner, 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 clean a corroded Mariner 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 purchase Mariner batteries near me?

You can shop for Mariner 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.

2008 Mercury Mariner Car Batteries

Get a New Mercury Battery

Get a New Mercury Mariner Battery

Don’t let a dead battery stop you. Shop replacement car batteries for your 2008 Mercury Mariner at Firestone Complete Auto Care.

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Battery Size & Replacement for 2008 Mercury Mariner

Need more info about Mercury Mariner batteries? Use the following chart to find information on Mercury Mariner battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
96R-3	L4/2.3L	Replacement 36 months	Performance months	590
96R-3	V6/3.0L	Replacement 36 months	Performance months	590
96R-3	L4/2.3L	Replacement 36 months	Performance months	590
96R-3	V6/3.0L	Replacement 36 months	Performance months	590

BATTERIES
L4/2.3L - Battery: 96R-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 590
V6/3.0L - Battery: 96R-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 590
L4/2.3L - Battery: 96R-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 590
V6/3.0L - Battery: 96R-3 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 590

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Buy the Right Battery for Your Mercury Mariner

Your Mariner doesn't have an expiration date, but its battery does. Generally, car batteries last from three to five years. You want to replace your 2008 Mercury Mariner battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A lagging starter, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or dim headlights can all signal that your battery is on its last leg.

Plus, at Firestone Complete Auto Care, we’ll test your battery for free. 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, get your Mercury Mariner a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with Mercury’s service specs for Mariner battery CCAs and reserve capacity. Get help choosing the battery size that's best for your Mariner, and schedule an appointment today for a quick car battery replacement.

Why Choose a DieHard Battery for Your Mariner?

Your Mercury Mariner deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. You need a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries go above and beyond and house the latest technology to meet the expanding 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 Mariner and have the peace of mind that 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 Mariner Battery

Have you recently had a fresh battery installed in your Mercury Mariner? Congrats! You can give your new battery a head start with proper care and attention. Give your new battery a hand by limiting short trips, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked Mariner Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Mercury Mariner battery, pay us a visit. Our technicians have the answers.

Why doesn’t my Mariner battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting 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 nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my old Mariner battery? We’ll recycle your car battery for you!
How much do DieHard batteries cost for your Mercury Mariner? Get affordable prices on Mercury Mariner 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 do car batteries 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 Mariner’s battery post? The white, flaky stuff that can build up around your Mariner’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 Mariner, 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 clean a corroded Mariner 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 purchase Mariner batteries near me? You can shop for Mariner 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.