Why won’t my SL400 battery hold a charge?

A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop in for a free battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.

What do you do with my dead SL400 battery?

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

What’s the cost of DieHard batteries for Mercedes-Benz SL400s?

Mercedes-Benz SL400 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 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 SL400’s battery post?

If you notice white, crusty stuff around the battery terminals of your SL400, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your SL400’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I remove corrosion from my SL400 car battery?

Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.

Who carries SL400 batteries near me?

Your local Firestone Complete Auto Care sells and installs SL400 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.

2015 Mercedes-Benz SL400 Car Batteries

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Get a Battery for Your Mercedes-Benz SL400

Don't let a failing battery slow you down. Shop replacement batteries for 2015 Mercedes-Benz SL400s today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2015 Mercedes-Benz SL400

Not sure what battery to get for your Mercedes-Benz SL400? Check the chart to find the right car battery size and cold cranking amps for your SL400.

Battery	Engine	Warranty		Cold Cranking Amps
H8-AGM	V6/3.0L	Replacement 36 months	Performance months	900

BATTERIES
V6/3.0L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buying a Replacement Battery for Mercedes-Benz SL400

You can pretty much drive your Mercedes-Benz SL400 until you don't want to anymore. But your SL400's battery? Don't count on it to last forever. On average, auto batteries last anywhere from three to five years. You want to replace your 2015 Mercedes-Benz SL400 battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A slow engine crank, a blinking battery or check engine light, swollen battery case, corroded battery terminals, or weak lights 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. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2015 Mercedes-Benz SL400 running! Car batteries are only one of our many strong suits. Our expert technicians understand Mercedes-Benz service recommendations for SL400 battery cold cranking amps and reserve capacity. Get help identifying the type and size of battery that matches your vehicle, and schedule an appointment today for a quick car battery replacement.

Is There a DieHard Battery for SL400s?

Your Mercedes-Benz SL400 deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. Your SL400 needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the growing power requirements of new vehicles. Don't call a DieHard battery ordinary. It's an extraordinary battery. Go with a DieHard battery for your SL400 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 Mercedes-Benz SL400 Battery

Got a new car battery installed in your 2015 Mercedes-Benz SL400? Congrats! Give your new car battery the best start with proper care. You can take care of your battery 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 SL400 Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a SL400-specific battery question, pay us a visit. Our technicians have the answers.

Why won’t my SL400 battery hold a charge? A battery that won't hold a charge is almost as good as dead. It may be getting old. Or, you may have a habit of leaving your car doors open and the lights on overnight. Stop in for a free battery check at your local Firestone Complete Auto Care to learn more about the state of your battery.
What do you do with my dead SL400 battery? We recycle it, taking care of both your car and the Earth.
What’s the cost of DieHard batteries for Mercedes-Benz SL400s? Mercedes-Benz SL400 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 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 SL400’s battery post? If you notice white, crusty stuff around the battery terminals of your SL400, it's likely corrosion. A chemical reaction between battery acid and the air can create a white, powdery substance that builds up over time on the terminals. This buildup can interfere with the electrical connection between the battery and your SL400’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I remove corrosion from my SL400 car battery? Regularly inspect the terminals and clean them with a mixture of baking soda and water, a wire brush, and a rag. Disconnect the battery cables before cleaning to help avoid the risk of electrical shock. Always reference and follow the instructions in your vehicle owner’s manual prior to disconnecting the battery cables.
Who carries SL400 batteries near me? Your local Firestone Complete Auto Care sells and installs SL400 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.