Why doesn’t my Legacy battery stay charged?

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

What happens to my old Legacy battery?

We’ll recycle your car battery for you!

How much will replacing my Subaru Legacy’s battery cost if I get a DieHard battery?

Get affordable prices on Subaru Legacy 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 is a car battery good for?

Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.

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

If you notice white, crusty stuff around the battery terminals of your Legacy, 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 Legacy’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

What do I do about corrosion on my Legacy car battery?

Regularly inspecting and cleaning your battery terminals will help keep your Legacy’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.

Who sells Legacy batteries near me?

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

2009 Subaru Legacy Batteries

Get a New Subaru Battery

Get a New Subaru Legacy Battery

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

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The Right Battery Size for a 2009 Subaru Legacy

Not sure what battery to get for your Subaru Legacy? Use the following chart to find information on Subaru Legacy battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
35-1	H4/2.5L	Replacement 24 months	Performance months	500
35-2	H4/2.5L	Replacement 36 months	Performance months	640
35-AGM	H4/2.5L	Replacement 36 months	Performance months	650
35-1	H4/2.0L	Replacement 24 months	Performance months	500
35-2	H4/2.0L	Replacement 36 months	Performance months	640
35-AGM	H4/2.0L	Replacement 36 months	Performance months	650
35-1	H6/3.0L	Replacement 24 months	Performance months	500
35-2	H6/3.0L	Replacement 36 months	Performance months	640
35-AGM	H6/3.0L	Replacement 36 months	Performance months	650

BATTERIES
H4/2.5L - Battery: 35-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
H4/2.5L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
H4/2.5L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
H4/2.0L - Battery: 35-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
H4/2.0L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
H4/2.0L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650
H6/3.0L - Battery: 35-1 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 500
H6/3.0L - Battery: 35-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 640
H6/3.0L - Battery: 35-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 650

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Buy the Right Battery for Your Subaru Legacy

You can pretty much drive your Subaru Legacy until you don't want to anymore. But your Legacy's battery? Don't count on it to last forever. The average car battery lasts three to five years. Don’t get stranded by your Legacy’s car battery. Replace it regularly instead! Pay attention to clues that your battery is on its way out. A slow engine crank, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or faded headlights can all signal that your battery is waving goodbye.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. Our equipment can see how much charge is left in your battery. Visit us for a complimentary battery check and, if needed, a replacement battery for your 2009 Subaru Legacy. Car batteries are one of our many specialties! Our technicians are familiar with Subaru-specific recommendations for Legacy battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that's best for your Legacy, and schedule an appointment today for a quick car battery replacement.

Why Choose a DieHard Battery for Your Legacy?

We only want what’s best for your Subaru Legacy, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard Legacy batteries surpass expectations using state-of-the-art advancements to fuel the expanding power requirements of new vehicles. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your Legacy and have the peace of mind that performance will be there when you're counting on it. That's the kind of battery we deliver.

Making Your Legacy’s New Battery Last

Did you recently have a new 2009 Subaru Legacy car battery installed? 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, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked Legacy Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have battery questions that are Subaru Legacy-specific, stop by your nearest store. Our technicians have the answers.

Why doesn’t my Legacy battery stay charged? A battery that won't hold a charge is almost as good as dead. 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 favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What happens to my old Legacy battery? We’ll recycle your car battery for you!
How much will replacing my Subaru Legacy’s battery cost if I get a DieHard battery? Get affordable prices on Subaru Legacy 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 is a car battery good for? Car battery lifespan varies depending on a few factors, including driving conditions, accessories, how well it’s maintained, and the type of battery. On average, a car battery lasts about three to five years.
What is the white, crusty substance accumulating on my Legacy’s battery post? If you notice white, crusty stuff around the battery terminals of your Legacy, 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 Legacy’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
What do I do about corrosion on my Legacy car battery? Regularly inspecting and cleaning your battery terminals will help keep your Legacy’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.
Who sells Legacy batteries near me? Your local Firestone Complete Auto Care sells and installs Legacy batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.