Why doesn’t my XJS battery stay charged?

A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.

What do you do with my dead XJS battery?

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

How much will replacing my Jaguar XJS’s battery cost if I get a DieHard battery?

Get affordable prices on Jaguar XJS 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 long can I expect my car battery to last?

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 XJS’s battery post?

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

How do I clean corrosion off my XJS vehicle battery?

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

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

1986 Jaguar XJS Car Batteries

Get a New Jaguar Battery

Get a Battery for Your Jaguar XJS

Don't let a failing battery slow you down. Shop replacement batteries for 1986 Jaguar XJSs today and schedule a quick installation at Firestone Complete Auto Care.

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The Right Battery Size for a 1986 Jaguar XJS

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

Battery	Engine	Warranty		Cold Cranking Amps
34FT-2	V12/5.3L	Replacement 36 months	Performance months	800
34-AGM	V12/5.3L	Replacement 36 months	Performance months	740

BATTERIES
V12/5.3L - Battery: 34FT-2 - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 800
V12/5.3L - Battery: 34-AGM - Warranty: Replacement 36 months, Performance months - Cold Cranking Amps: 740

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Shopping for Jaguar XJS Car Batteries

Sadly, your Jaguar XJS won't last forever. Neither will its battery. The average car battery lasts three to five years. Don’t get stranded by your XJS’s car battery. Replace it regularly instead! Look out for symptoms of a faulty car battery. A slow engine crank, a blinking battery or check engine light, swollen battery case, corroded battery terminals, or weak lights can all be signs that your battery needs attention.

You can also get a Free Battery Test at your local Firestone Complete Auto Care. With computerized testing we 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 1986 Jaguar XJS. Automotive batteries are just one of our many areas of expertise. Our technicians are familiar with Jaguar-specific recommendations for XJS battery CCAs and reserve capacity. Get help identifying the type and size of battery that's best for your XJS, and schedule a weekday or weekend battery replacement service for your car.

Why Choose a DieHard Battery for Your XJS?

We know what’s best for your Jaguar XJS, which is why we only carry top-of-the-line replacement parts and batteries. Your XJS needs a reliable, durable and powerful battery in even the most extreme conditions. DieHard XJS batteries surpass expectations and house the latest technology to satisfy the increasing power demands of modern vehicles They're no ordinary battery, they're extraordinary. Choose a DieHard battery for your Jaguar XJS and drive with confidence knowing that your battery will perform when you need it. That’s why you should choose batteries from Firestone Complete Auto Care.

After Buying 1986 Jaguar XJS Battery

Did you recently have a new 1986 Jaguar XJS car battery installed? Great job! Now, help it last longer and stay charged by caring for it from the get-go. turning off all of the lights when you leave your vehicle, decreasing the number of short trips you take, keeping the battery posts corrosion-free, and avoiding radio and electronic component use when the engine is off.

Answers to Your XJS Car Battery Questions

Turn to Firestone Complete Auto Care for answers to all your car battery questions. If you have a XJS-specific battery question, stop by your nearest store. Our technicians are happy to help.

Why doesn’t my XJS battery stay charged? A car battery that needs to be jump-started every time is as good as dead. The battery might be old. Or, you may have been leaving your car doors ajar and the dome lights on during the night. Stop by for a free battery test at your favorite Firestone Complete Auto Care and get a handle on your car battery’s health.
What do you do with my dead XJS battery? We recycle it, taking care of both your car and the Earth.
How much will replacing my Jaguar XJS’s battery cost if I get a DieHard battery? Get affordable prices on Jaguar XJS 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 long can I expect my car battery to last? 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 XJS’s battery post? If you notice white, crusty stuff around the battery terminals of your XJS, 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 XJS’s electrical system, potentially leading to poor performance, difficulty starting, and other issues.
How do I clean corrosion off my XJS vehicle battery? Regularly inspecting and cleaning your battery terminals will help keep your XJS’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 XJS batteries near me? When you need a new battery for your vehicle, Firestone Complete Auto Care is here to help. We sell and install XJS 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.