2003 Mercedes-Benz SLK320 Car Batteries

Get a New Mercedes-Benz Battery

Get a Battery for Your Mercedes-Benz SLK320

Don't let a failing battery slow you down. Shop replacement batteries for 2003 Mercedes-Benz SLK320s today and schedule a quick installation at Firestone Complete Auto Care.

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Battery Size & Replacement for 2003 Mercedes-Benz SLK320

Not sure what battery to get for your Mercedes-Benz SLK320? Use the following chart to find information on Mercedes-Benz SLK320 battery size and cold cranking amps.

Battery Engine Warranty Cold Cranking Amps
48H6 V6/3.2L Replacement 36 months Performance months 730
H6-AGM V6/3.2L Replacement 36 months Performance months 760
BATTERIES

V6/3.2L

- Battery: 48H6

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 730

V6/3.2L

- Battery: H6-AGM

- Warranty: Replacement 36 months, Performance months

- Cold Cranking Amps: 760

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Shopping for Mercedes-Benz SLK320 Car Batteries

Sadly, your Mercedes-Benz SLK320 won't last forever. Neither will its battery. Generally, car batteries last from three to five years. You want to replace your 2003 Mercedes-Benz SLK320 battery before it fails and leaves you stranded. Pay attention to clues that your battery is on its way out. A sluggish engine start, an illuminated battery or check engine light, swollen battery case, corroded battery posts, and subpar electrical performance can all be signs that your battery is waving goodbye.

You can also get a Free Battery Test at your local 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 needed, get your Mercedes-Benz SLK320 a replacement battery. Car batteries are one of our many specialties! Our technicians are well-acquainted with Mercedes-Benz’s service specs for SLK320 battery CCAs and reserve capacity. Get help choosing the battery size that matches your vehicle, and schedule a fast car battery replacement at your earliest convenience.

Find the Right DieHard Battery for Your SLK320

Your Mercedes-Benz SLK320 deserves the best, which is why we carry just that. Your vehicle needs a reliable, durable and powerful battery in even some of the toughest conditions. DieHard batteries shatter expectations using the latest innovative technology to fuel the growing power needs of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Go with a DieHard battery for your SLK320 and drive with confidence knowing that your battery will perform when you need it. That's the kind of battery we deliver.

After Buying 2003 Mercedes-Benz SLK320 Battery

Got a new car battery installed in your 2003 Mercedes-Benz SLK320? Great job! Give your new car battery the best start with proper care. flipping the dome lights and headlights off when exiting the car, cutting back on unnecessary short trips, keeping the battery posts corrosion-free, and not using electronics such as the radio and power outlets when the engine is off.

Top SLK320 Car Battery Questions

Firestone Complete Auto Care has answers to your top car battery questions. If you have a SLK320-specific battery question, visit your nearest store. Our expert techs have the answers you need.

  • Why won't my SLK320 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 may have been leaving your car doors ajar and the dome lights on during the night. Stop in for a free battery check at your local Firestone Complete Auto Care and get a handle on your car battery’s health.
  • What do you do with my dead SLK320 battery? We’ll recycle your car battery for you!
  • How much will replacing my Mercedes-Benz SLK320’s battery cost if I get a DieHard battery? Mercedes-Benz SLK320 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.
  • Why is there white, crusty buildup on my SLK320’s battery post? The white, crusty stuff that can accumulate around SLK320 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 SLK320 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 SLK320 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 SLK320 batteries near me? Your local Firestone Complete Auto Care sells and installs SLK320 batteries in your neighborhood. Our Firestone Direct mobile vans can even come to you and do it! Learn more about mobile battery services.