Why won't my SL500 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 free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my old SL500 battery?

We’ll recycle your car battery for you!

How much will replacing my Mercedes-Benz SL500’s battery cost if I get a DieHard battery?

Mercedes-Benz SL500 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 is a car battery good for?

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 SL500’s battery post?

The white, crusty stuff that can accumulate around SL500 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 SL500 battery terminal?

Regularly inspecting and cleaning your battery terminals will help keep your SL500’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 SL500 batteries near me?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install SL500 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 Mercedes-Benz SL500

Get a New Mercedes-Benz Battery

Get a Battery for Your Mercedes-Benz SL500

The middle of nowhere is the wrong place to have a weak battery. Shop replacement batteries for 2003 Mercedes-Benz SL500 today and schedule a quick installation at Firestone Complete Auto Care.

Shop Batteries

Battery Size & Replacement for 2003 Mercedes-Benz SL500

Researching battery replacements for your Mercedes-Benz SL500? Check the chart to find the right car battery size and cold cranking amps for your SL500.

Battery	Engine	Warranty		Cold Cranking Amps
V4	V8/5.0L	Replacement 36 months	Performance months	520
H6-AGM	V8/5.0L	Replacement 36 months	Performance months	760

BATTERIES
V8/5.0L - Battery: V4 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 520
V8/5.0L - Battery: H6-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 760

Schedule an Appointment

Buying a Replacement Battery for Mercedes-Benz SL500

You can pretty much drive your Mercedes-Benz SL500 until you don't want to anymore. But your SL500'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 Mercedes-Benz SL500 stranded. Look out for symptoms of a faulty car battery. A sluggish engine start, an illuminated check engine light or battery signal, bloated battery case, corroded battery terminals, or faded headlights may all indicate that your battery is on its last leg.

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 Mercedes-Benz SL500. Car batteries are only one of our many strong suits. Our expert technicians understand Mercedes-Benz service recommendations for SL500 car batteries’ reserve capacities and cold cranking amps. Get help choosing the battery size that's best for your SL500, and schedule a weekday or weekend battery replacement service for your car.

Is There a DieHard Battery for SL500s?

Your Mercedes-Benz SL500 deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. Your vehicle needs a reliable, durable and powerful battery in extremely hot and cold environments. DieHard SL500 batteries surpass expectations and house the latest technology to fuel the growing power requirements of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Buy a DieHard battery for your Mercedes-Benz SL500 and drive with confidence knowing that performance will be there when you need it most. That's the kind of battery we deliver.

After Buying 2003 Mercedes-Benz SL500 Battery

Have you recently had a fresh battery installed in your Mercedes-Benz SL500? 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, limiting short trips, cleaning your battery posts, and avoiding radio and electronic component use when the engine is off.

Answers to Your SL500 Car 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 Mercedes-Benz SL500 battery, stop by your nearest store. Our technicians are happy to help.

Why won't my SL500 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 free battery test at your local Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my old SL500 battery? We’ll recycle your car battery for you!
How much will replacing my Mercedes-Benz SL500’s battery cost if I get a DieHard battery? Mercedes-Benz SL500 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 is a car battery good for? 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 SL500’s battery post? The white, crusty stuff that can accumulate around SL500 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 SL500 battery terminal? Regularly inspecting and cleaning your battery terminals will help keep your SL500’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 SL500 batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install SL500 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.