Why doesn’t my STS battery stay charged?

A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.

What do you do with my old STS battery?

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

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

Get affordable prices on Cadillac STS 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.

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 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 carries STS batteries near me?

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

Get a New Cadillac Battery

Get a Battery for Your Cadillac STS

Don’t let a dead battery stop you. Shop replacement car batteries for your 2009 Cadillac STS at Firestone Complete Auto Care.

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The Right Battery Size for a 2009 Cadillac STS

Need more info about Cadillac STS batteries? Use the following chart to find information on Cadillac STS battery size and cold cranking amps.

Battery	Engine	Warranty		Cold Cranking Amps
48H6	V8/4.4L	Replacement 36 months	Performance months	730
H6-AGM	V8/4.4L	Replacement 36 months	Performance months	760
48H6	V6/3.6L	Replacement 36 months	Performance months	730
H6-AGM	V6/3.6L	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
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
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
V8/4.6L - 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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Shopping for Cadillac STS Car Batteries

Sadly, your Cadillac STS won't last forever. Neither will its battery. The average car battery lasts three to five years. You want to replace your 2009 Cadillac STS battery before it fails and leaves you stranded. Watch for signs that your current battery is getting too old or too weak. A lagging starter, a blinking battery or check engine light, swollen battery case, corroded battery posts, or weak lights may all indicate 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. Stop by for a free battery test and, if needed, get your Cadillac STS a replacement battery. Car batteries are only one of our many strong suits. 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's best for your STS, and schedule a weekday or weekend battery replacement service for your car.

Firestone Has DieHard Batteries for STSs

We only want what’s best for your Cadillac STS, which is why we exclusively carry the best. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond and house the latest technology to meet the increasing power needs of modern vehicles They're no ordinary battery, they're extraordinary. Go with a DieHard battery for your STS 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 STS’s New Battery Last

Got a new car battery installed in your 2009 Cadillac STS? Congrats! You can give your new battery a head start with proper care and attention. Give your new battery a hand by limiting short trips, cleaning your battery posts, and not playing the radio or using other electronics when the engine is turned off.

Answers to Your STS Car Battery Questions

Get answers to common car battery questions, from Firestone Complete Auto Care. If you have a battery question that's unique to your Cadillac STS battery, stop by your nearest store. Our technicians are happy to help.

Why doesn’t my STS battery stay charged? A battery is in its final hour when it will no longer hold a charge. It may be getting old. Or, you may have a habit of leaving your car doors open and the cabin light at night. Stop by for a complimentary battery check at your local Firestone Complete Auto Care and learn more about your battery's charge.
What do you do with my old STS battery? We recycle it! Nearly 100% of all lead-acid batteries are recyclable.
What’s the cost of DieHard batteries for Cadillac STSs? Get affordable prices on Cadillac STS 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.
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 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 carries STS batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install STS 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.