Why won't my Mariner battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the lights on overnight. 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 happens to my old Mariner battery?

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

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

Mercury Mariner 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.

What is the average lifespan of a car battery?

You can usually get three to five years out of your car battery. However, battery type, how well you maintain your battery, and your driving habits can all affect your battery’s lifespan.

Why is there white, crusty buildup 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 remove corrosion from my Mariner car battery?

To help extend the life of your battery, you should routinely inspect and clean the terminals using a baking soda and water mix, wire brush, and rag. Be sure to disconnect the battery cables before cleaning and check your Mariner owner’s manual for instructions on how to do so.

Who carries Mariner batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Mariner 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.

2009 Mercury Mariner Car Batteries

Get a New Mercury Battery

Get a New Mercury Mariner Battery

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2009 Mercury Mariner today and schedule a quick installation at Firestone Complete Auto Care.

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Buying a Replacement Battery for Mercury Mariner

Sadly, your Mercury Mariner won't last forever. Neither will its battery. The average car battery lasts three to five years. Check your battery regularly and replace it as needed so it doesn’t leave you and your Mercury Mariner stranded. Look out for symptoms of a faulty car battery. A slow engine crank, an illuminated check engine light or battery signal, swollen battery case, corroded battery posts, or faded headlights can all signal that your battery is waving goodbye.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With computerized testing we 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 2009 Mercury Mariner running! Car batteries are only one of our many strong suits. Our expert technicians understand Mercury service recommendations for Mariner battery CCAs and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Why Choose a DieHard Battery for Your Mariner?

We know what’s best for your Mercury Mariner, which is why we carry just that. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard Mariner batteries surpass expectations using the latest innovative technology to satisfy the growing power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your Mariner and drive with confidence knowing that performance will be there when you need it most. That's the kind of battery we deliver.

Making Your Mariner’s New Battery Last

Have you recently had a fresh battery installed in your Mercury Mariner? Great job! You can give your new battery a head start with proper care and attention. flipping the dome lights and headlights off when exiting the car, decreasing the number of short trips you take, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.