Why won't my Outback battery stay charged?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old Outback battery?

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

How much do DieHard batteries cost for your Subaru Outback?

Get affordable prices on Subaru Outback 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?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

What is the white, crusty stuff around my Outback’s battery post?

The white, flaky stuff that can build up around your Outback’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 Outback, 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 Outback 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 Outback owner’s manual for instructions on how to do so.

Where can I find a battery for my Outback?

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

Car Batteries for 2003 Subaru Outback

Get a New Subaru Battery

Get a Battery for Your Subaru Outback

Don't let a failing battery slow you down. Shop replacement batteries for 2003 Subaru Outbacks today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2003 Subaru Outback

Researching battery replacements for your Subaru Outback? Use this chart to find the right battery size and CCAs for your Subaru Outback.

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
26R-3	H6/3.0L	Replacement 24 months	Performance months	575
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
H6/3.0L - Battery: 26R-3 - Warranty: Replacement 24 months, Performance months - Cold Cranking Amps: 575
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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Shopping for Subaru Outback Car Batteries

Sadly, your Subaru Outback won't last forever. Neither will its battery. Generally, car batteries last from three to five years. Don’t get stranded by your Outback’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A slow engine crank, a blinking battery or check engine light, bloated battery case, corroded battery terminals, or dim headlights can all be signs that your battery needs attention.

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 needed, a replacement battery for your 2003 Subaru Outback. Car batteries are one of our many specialties! Our expert technicians understand Subaru service recommendations for Outback car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for Outbacks

Your Subaru Outback deserves the best, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard Outback batteries surpass expectations using state-of-the-art advancements to satisfy the increasing 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 Subaru Outback and have the peace of mind that performance will be there when you need it most. That's the kind of battery we deliver.

Making Your Outback’s New Battery Last

Got a new car battery installed in your 2003 Subaru Outback? Good thinking! Now, help it last longer and stay charged by caring for it from the get-go. ensuring all the lights are turned off before you leave the car, decreasing the number of short trips you take, cleaning your battery posts, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked Outback Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a battery question that's unique to your Subaru Outback battery, visit your nearest store. Our technicians have the answers.

Why won't my Outback battery stay charged? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your nearest Firestone Complete Auto Care to learn more about the state of your battery.
What happens to my old Outback battery? We recycle it, taking care of both your car and the Earth.
How much do DieHard batteries cost for your Subaru Outback? Get affordable prices on Subaru Outback 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? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
What is the white, crusty stuff around my Outback’s battery post? The white, flaky stuff that can build up around your Outback’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 Outback, 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 Outback 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 Outback owner’s manual for instructions on how to do so.
Where can I find a battery for my Outback? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install Outback 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.