Why won't my A4 battery stay charged?

A battery is in its final hour when it will no longer hold a charge. The battery may be too 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 do you do with my old A4 battery?

We’ll recycle your car battery for you!

How much do DieHard batteries cost for your Audi A4?

Get affordable prices on Audi A4 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 often should I replace my 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 A4’s battery post?

The white, crusty stuff that can accumulate around A4 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 clean a corroded A4 battery terminal?

You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your A4 owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.

Where can I purchase A4 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install A4 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.

2002 Audi A4 Car Batteries

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Audi A4 Batteries Near You

Don’t let a dead battery stop you. Shop replacement car batteries for your 2002 Audi A4 at Firestone Complete Auto Care.

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2002 Audi A4 Battery Replacement & Size

Not sure what battery to get for your Audi A4? Check the chart to find the right car battery size and cold cranking amps for your A4.

Battery	Engine	Warranty		Cold Cranking Amps
	L4/1.8L	Replacement months	Performance months
	V6/3.0L	Replacement months	Performance months

BATTERIES
L4/1.8L - Battery: - Warranty: Replacement months, Performance months - Cold Cranking Amps:
V6/3.0L - Battery: - Warranty: Replacement months, Performance months - Cold Cranking Amps:

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Buying a Replacement Battery for Audi A4

You can pretty much drive your Audi A4 until you don't want to anymore. But your A4'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 Audi A4 stranded. Watch for signs that your current battery is getting too old or too weak. A slow engine crank, an illuminated battery or check engine light, bloated battery case, corroded battery posts, or faded headlights may all indicate that your battery is on its last leg.

Or, you can get a complimentary battery check at your nearest Firestone Complete Auto Care. With best-in-class tools we can tell you how much "life" is left in your battery. Visit us for a complimentary battery check and, if necessary, a battery replacement to help keep your 2002 Audi A4 running! Car batteries are one of our many specialties! Our technicians are familiar with Audi-specific recommendations for A4 battery cold cranking amps and reserve capacity. Get help figuring out the battery size that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Why Choose a DieHard Battery for Your A4?

Your Audi A4 deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries go above and beyond and house the latest technology to meet the increasing power demands of new vehicles and their accessories. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your A4 and drive with confidence knowing that performance will be there when you need it most. That's the kind of battery we deliver.

Caring for a New Audi A4 Battery

Got a new car battery installed in your 2002 Audi A4? Great job! Give your new car battery the best start with proper care. Give your new battery a hand by decreasing the number of short trips you take, keeping your battery posts clean, and not using electronics such as the radio and power outlets when the engine is off.

Commonly Asked A4 Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a battery question that's unique to your Audi A4 battery, visit your nearest store. Our expert techs have the answers you need.

Why won't my A4 battery stay charged? A battery is in its final hour when it will no longer hold a charge. The battery may be too 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 do you do with my old A4 battery? We’ll recycle your car battery for you!
How much do DieHard batteries cost for your Audi A4? Get affordable prices on Audi A4 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 often should I replace my 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 A4’s battery post? The white, crusty stuff that can accumulate around A4 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 clean a corroded A4 battery terminal? You can help prevent or get rid of corrosion by regularly inspecting and cleaning your battery terminals. Before cleaning your battery, see your A4 owner's manual to learn how to disconnect the battery cables. After disconnecting the cables, use a mixture of water and baking soda, a wire brush, and a rag to carefully clean the terminals.
Where can I purchase A4 batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install A4 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.