Why won't my STS 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’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care to learn more about the state of your battery.

What happens to my old STS battery?

We’ll recycle your car battery for you!

What’s the cost of DieHard batteries for Cadillac STSs?

Cadillac STS 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.

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.

Why is there white, crusty buildup on my STS’s battery post?

The white, crusty stuff that can accumulate around STS 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 remove corrosion from my STS car battery?

Regularly inspecting and cleaning your battery terminals will help keep your STS’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 STS batteries near me?

You can shop for STS 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.

Car Batteries for 2008 Cadillac STS

Get a New Cadillac Battery

Cadillac STS Batteries Near You

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

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Battery Size & Replacement for 2008 Cadillac STS

Researching battery replacements for your Cadillac STS? Check the chart to find the right car battery size and cold cranking amps for your STS.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	V6/3.6L	Replacement 36 months	Performance months	730
H6-AGM	V6/3.6L	Replacement 36 months	Performance months	760
48H6	V8/4.4L	Replacement 36 months	Performance months	730
H6-AGM	V8/4.4L	Replacement 36 months	Performance months	760
48H6	V8/4.6L	Replacement 36 months	Performance months	730
H6-AGM	V8/4.6L	Replacement 36 months	Performance months	760

BATTERIES
V6/3.6L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V6/3.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
V8/4.4L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V8/4.4L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760
V8/4.6L - Battery: 48H6 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 730
V8/4.6L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

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Buying a Replacement Battery for Cadillac STS

You can pretty much drive your Cadillac STS until you don't want to anymore. But your STS's battery? Don't count on it to last forever. 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 Cadillac STS stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated check engine light or battery signal, swollen battery case, corroded battery posts, and subpar electrical performance may all indicate 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. Drop in for a free battery check and, if needed, get your Cadillac STS a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with Cadillac’s service specs for STS battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Firestone Has DieHard Batteries for STSs

We know what’s best for your Cadillac STS, which is why we carry just that. Your STS needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard STS batteries surpass expectations and house the latest technology to satisfy the increasing power requirements of modern vehicles Don't call a DieHard battery ordinary. It's an extraordinary battery. Choose a DieHard battery for your Cadillac STS 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.

Caring for a New Cadillac STS Battery

Got a new car battery installed in your 2008 Cadillac STS? Great job! 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 avoiding radio and electronic component use when the engine is off.

Answers to Your STS Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Cadillac STS-specific, stop by your nearest store. Our technicians have the answers.

Why won't my STS 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’ve been leaving the doors slightly open and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care to learn more about the state of your battery.
What happens to my old STS battery? We’ll recycle your car battery for you!
What’s the cost of DieHard batteries for Cadillac STSs? Cadillac STS 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.
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.
Why is there white, crusty buildup on my STS’s battery post? The white, crusty stuff that can accumulate around STS 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 remove corrosion from my STS car battery? Regularly inspecting and cleaning your battery terminals will help keep your STS’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 STS batteries near me? You can shop for STS 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.