Why doesn’t my R350 battery stay charged?

A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the lights on overnight. Stop in for a free battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead R350 battery?

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

How much will replacing my Mercedes-Benz R350’s battery cost if I get a DieHard battery?

You can find affordable R350 batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.

How often should I replace my car battery?

The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.

What is the white, crusty stuff around my R350’s battery post?

If you notice white, crusty stuff around the battery terminals of your R350, 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 R350’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.

How do I clean a corroded R350 battery terminal?

Regularly inspecting and cleaning your battery terminals will help keep your R350’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.

Where can I find a battery for my R350?

When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install R350 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.

2008 Mercedes-Benz R350 Batteries

Get a New Mercedes-Benz Battery

Get a Battery for Your Mercedes-Benz R350

Don’t let a dead battery stop you. Shop replacement car batteries for your 2008 Mercedes-Benz R350 at Firestone Complete Auto Care.

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The Right Battery Size for a 2008 Mercedes-Benz R350

Not sure what battery to get for your Mercedes-Benz R350? Use this chart to find the right battery size and CCAs for your Mercedes-Benz R350.

Battery	Engine	Warranty		Cold Cranking Amps
H8-AGM	V6/3.5L	Replacement 36 months	Performance months	900

BATTERIES
V6/3.5L - Battery: H8-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 900

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Buying a Replacement Battery for Mercedes-Benz R350

Sadly, your Mercedes-Benz R350 won't last forever. Neither will its battery. On average, auto batteries last anywhere from three to five years. You want to replace your 2008 Mercedes-Benz R350 battery before it fails and leaves you 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, corrosion-covered posts, or faded headlights can all be signs 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. Drop in for a free battery check and, if necessary, a battery replacement to help keep your 2008 Mercedes-Benz R350 running! Car batteries are one of our many specialties! Our technicians are well-acquainted with Mercedes-Benz’s service specs for R350 battery CCAs and reserve capacity. Get help identifying the type and size of battery that fits your car perfectly, and schedule an appointment today for a quick car battery replacement.

Find the Right DieHard Battery for Your R350

Your Mercedes-Benz R350 deserves the best, which is why we only carry top-of-the-line replacement parts and batteries. You need a reliable, durable and powerful battery in extremely hot and cold environments. DieHard batteries go above and beyond using state-of-the-art advancements to meet the growing power requirements of new vehicles and their accessories. A DieHard battery isn't an ordinary car battery. It's extraordinary. Choose a DieHard battery for your Mercedes-Benz R350 and have the peace of mind that your battery will perform when you need it. That's the kind of battery we deliver.

Making Your R350’s New Battery Last

Got a new car battery installed in your 2008 Mercedes-Benz R350? Good thinking! 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 playing the radio or using other electronics when the engine is turned off.

Commonly Asked R350 Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have battery questions that are Mercedes-Benz R350-specific, stop by your nearest store. Our expert techs have the answers you need.

Why doesn’t my R350 battery stay charged? A battery that won't hold a charge is almost as good as dead. The battery might be old. Or, you’ve been leaving the doors slightly open and the lights on overnight. Stop in for a free battery check at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead R350 battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Mercedes-Benz R350’s battery cost if I get a DieHard battery? You can find affordable R350 batteries by using one of our car battery coupons, when available. Plus, every DieHard battery comes with extra coverage thanks to DieHard Assurance and a free replacement warranty.
How often should I replace my car battery? The typical 12-volt car battery may last three to five years, depending on the type of battery, the driving conditions, and how well the battery is maintained.
What is the white, crusty stuff around my R350’s battery post? If you notice white, crusty stuff around the battery terminals of your R350, 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 R350’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean a corroded R350 battery terminal? Regularly inspecting and cleaning your battery terminals will help keep your R350’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.
Where can I find a battery for my R350? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install R350 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.