Why doesn’t my Grand Marquis battery stay charged?

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

What do you do with my dead Grand Marquis battery?

We recycle it! Nearly 100% of all lead-acid batteries are recyclable.

How much will replacing my Mercury Grand Marquis’s battery cost if I get a DieHard battery?

You can find affordable Grand Marquis 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.

What is the average lifespan of a car battery?

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 stuff around my Grand Marquis’s battery post?

The white, crusty stuff that can accumulate around Grand Marquis 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.

How do I clean a corroded Grand Marquis battery terminal?

Regularly inspecting and cleaning your battery terminals will help keep your Grand Marquis’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 Grand Marquis?

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

2008 Mercury Grand Marquis Batteries

Get a New Mercury Battery

Get a Battery for Your Mercury Grand Marquis

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

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Battery Size & Replacement for 2008 Mercury Grand Marquis

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

Battery	Engine	Warranty		Cold Cranking Amps
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
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 Grand Marquis Car Batteries

Your Grand Marquis 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 Grand Marquis battery before it fails and leaves you 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 signal that your battery is waving goodbye.

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 needed, a replacement battery for your 2008 Mercury Grand Marquis. Car batteries are one of our many specialties! Our expert technicians understand Mercury service recommendations for Grand Marquis battery CCAs and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule a fast car battery replacement at your earliest convenience.

Firestone Has DieHard Batteries for Grand Marquiss

We only want what’s best for your Mercury Grand Marquis, which is why we exclusively carry the best. Your Grand Marquis needs a reliable, durable and powerful battery that can handle most extreme environments and weather conditions. DieHard Grand Marquis batteries surpass expectations using the latest innovative technology to fuel the growing power requirements of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your Mercury Grand Marquis and get behind the wheel with confidence. Why? Because performance will be there when you're counting on it. That's the kind of battery we deliver.

Caring for a New Mercury Grand Marquis Battery

Got a new car battery installed in your 2008 Mercury Grand Marquis? Congrats! Give your new car battery the best start with proper care. Give your new battery a hand by cutting back on unnecessary 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 Grand Marquis Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Mercury Grand Marquis battery, stop by your nearest store. Our technicians have the answers.

Why doesn’t my Grand Marquis battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too old. Or, you’ve been leaving the doors slightly open and the cabin light at night. Stop by for a complimentary battery check at your nearest Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead Grand Marquis battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
How much will replacing my Mercury Grand Marquis’s battery cost if I get a DieHard battery? You can find affordable Grand Marquis 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.
What is the average lifespan of a car battery? 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 stuff around my Grand Marquis’s battery post? The white, crusty stuff that can accumulate around Grand Marquis 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.
How do I clean a corroded Grand Marquis battery terminal? Regularly inspecting and cleaning your battery terminals will help keep your Grand Marquis’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 Grand Marquis? At Firestone Complete Auto Care, we make it easy to get a new car battery. Our stores sell and install Grand Marquis batteries, and our Firestone Direct mobile vans can even come to you for added convenience. Check out our mobile battery services to learn more.