2017 Ford Explorer Battery Replacement – Restore Reliable Starting

Replacing the battery in your 2017 Ford Explorer is a straightforward DIY task that ensures your SUV starts reliably in any weather. This guide covers everything from selecting the right group size to resetting the Battery Management System (BMS) for peak performance.

We have all been there—you turn the key or push the start button on your Explorer, and all you get is a sluggish crank or a series of rapid clicks. It usually happens at the worst time, like when you are heading out for a weekend camping trip or running late for work.

The good news is that a 2017 ford explorer battery replacement is one of the most manageable maintenance tasks you can perform at home. You do not need a shop full of specialized tools to get your Ford back into peak operating condition.

In this guide, I will walk you through the specific tools you need, the safety precautions to take, and the exact steps to swap out your old power cell. We will also cover the “secret” reset procedure that keeps your new battery from wearing out prematurely.

Signs Your 2017 Ford Explorer Needs a New Battery

Before you dive into the engine bay, it is important to confirm that the battery is actually the culprit. Your Ford Explorer is a rolling computer, and it will often give you subtle hints that the 12-volt system is struggling.

One of the most common signs is a slow engine crank, where the starter sounds like it is laboring to turn the engine over. You might also notice that your interior lights or headlights seem dimmer than usual when the engine is off.

Modern Fords also display a specific message on the dashboard: “System Off to Save Battery.” If you see this while parked, your vehicle is actively cutting power to non-essential modules because the voltage has dropped below a safe threshold.

The dreaded clicking sound

If you hear a rapid-fire clicking sound when trying to start the engine, the battery likely has enough juice to engage the starter solenoid but not enough to actually spin the motor. This is a classic symptom of a discharged or failing cell.

Visible corrosion and bloating

Pop the hood and look at the battery terminals. If you see a white, powdery substance caked around the metal connectors, that is acid corrosion which creates resistance and prevents proper charging.

Additionally, check the sides of the battery case. If the plastic looks swollen or bloated, it has been subjected to extreme heat or overcharging, and it is a ticking time bomb for total failure.

Choosing the Right Battery for Your Explorer

Not all batteries are created equal, and putting the wrong one in your Ford can lead to fitment issues or electrical gremlins. For a 2017 Ford Explorer, you typically need a Group 65 battery.

However, always check your owner’s manual or the label on your existing battery. Some EcoBoost models or those with heavy towing packages might require a higher Cold Cranking Amps (CCA) rating to handle the extra load.

You will also face a choice between a standard flooded lead-acid battery and an Absorbed Glass Mat (AGM) battery. While AGM options are more expensive, they handle vibrations better and have a longer lifespan, making them ideal for off-roaders.

Understanding CCA and Reserve Capacity

Cold Cranking Amps (CCA) measure how much power the battery can deliver at 0 degrees Fahrenheit. If you live in a northern climate, look for a battery with at least 650 to 750 CCA to ensure reliable winter starts.

Reserve Capacity (RC) tells you how long the battery can run the vehicle’s essential electronics if the alternator fails. This is crucial for those who use their Explorer for overlanding or remote travel where help is far away.

Essential Tools for the Job

You do not need a professional mechanic’s rolling tool chest for this project. Most of the fasteners on the 2017 Explorer battery tray are standard sizes that you likely already have in a basic kit.

• 10mm Wrench or Socket: This is the most important tool, as it fits the terminal clamps and the hold-down bracket.
• Socket Extension: A 6-inch extension helps you reach the hold-down bolt at the base of the battery.
• Battery Terminal Cleaner: A small wire brush tool helps ensure a metal-to-metal connection.
• Work Gloves: Protect your hands from grime and potential acid residue.
• Safety Glasses: Always wear eye protection when working around lead-acid batteries.

I also recommend having a memory saver. This is a small device that plugs into your OBDII port or cigarette lighter to keep your radio presets and clock settings while the battery is disconnected.

Step-by-Step 2017 ford explorer battery replacement Guide

Now that you have your tools and your new battery ready, it is time to perform the swap. Park the vehicle on a level surface, engage the parking brake, and ensure the ignition is completely off.

Step 1: Locate and Prepare

Open the hood and locate the battery on the driver’s side of the engine compartment. You may need to remove a plastic cover or a flexible air duct depending on which engine your Explorer has (3.5L V6 vs 2.3L EcoBoost).

Before touching anything, identify the negative terminal (marked with a minus sign and usually a black cable) and the positive terminal (marked with a plus sign and a red cover).

Step 2: Disconnect the Negative Cable First

Use your 10mm wrench to loosen the nut on the negative terminal clamp. Slide the clamp off the post and tuck it to the side where it cannot accidentally spring back and touch the terminal.

This is a critical safety step. By removing the ground first, you prevent accidental sparks if your wrench touches a metal part of the frame while loosening the positive side later.

Step 3: Disconnect the Positive Cable

Flip up the red plastic cover on the positive terminal. Loosen the 10mm nut and pull the clamp off the post. Again, ensure the cable is moved far enough away that it cannot make contact with the battery.

Step 4: Remove the Hold-Down Bracket

The battery is secured by a bracket and a long bolt to prevent it from bouncing around. Use your 10mm socket and extension to remove the bolt. Lift the bracket out and set it aside in a safe place.

Step 5: Swap the Batteries

Carefully lift the old battery out of the engine bay. Be warned: these are heavy, usually weighing between 40 and 50 pounds. Use the built-in handle if the battery has one.

Before installing the new unit, take a moment to clean the battery tray of any debris. Place the new battery into the tray, ensuring the positive and negative posts are oriented the same way as the old one.

Step 6: Reinstall and Reconnect

Place the hold-down bracket back over the battery and tighten the bolt until the battery is snug. It should not move if you give it a firm shake with your hand.

Reconnect the cables in the reverse order: positive first, then negative. Tighten the 10mm nuts until the clamps are firm and cannot be rotated by hand. Do not over-tighten, as you can crack the lead terminals.

The Crucial Step: Resetting the Battery Management System

One mistake many DIYers make during a 2017 ford explorer battery replacement is skipping the BMS reset. Your Explorer uses a sensor to track the age and health of the battery to adjust the alternator’s charging rate.

If you don’t reset this system, the computer will treat the new battery like the old, worn-out one. This can lead to undercharging and significantly shorten the life of your expensive new purchase.

While a professional scan tool is the official way to do this, there is a manual “cheat code” you can use at home. Follow these steps exactly:

1. Get in the driver’s seat and close all doors.
2. Turn the ignition to the “ON” position (Engine OFF).
3. Flash your high beams five times.
4. Step on the brake pedal three times.
5. Wait about 10 seconds. The battery icon on the dashboard should flash three times to confirm the reset.

Maintaining Your New Battery

Once your 2017 ford explorer battery replacement is complete, a little preventative maintenance goes a long way. This is especially true if you enjoy off-roading or live in an area with extreme temperature swings.

Apply a thin layer of dielectric grease or terminal protector spray to the posts. This creates a barrier against moisture and prevents the white acid crust from forming on your clean connections.

If you plan on leaving your Explorer parked for more than two weeks, consider using a battery tender or maintainer. Modern vehicles have a “parasitic draw” from the alarm and keyless entry systems that can drain a battery over time.

Extreme Weather Tips

In extreme cold, the chemical reaction inside the battery slows down significantly. If you live in an arctic climate, an engine block heater or a battery blanket can keep the core temperature high enough to ensure a strong start every morning.

In desert heat, the water inside the electrolyte can actually evaporate. While most modern batteries are “maintenance-free,” the heat still degrades the internal plates faster than cold does. Parking in the shade helps more than you might think.

When to Call a Professional

While this is a DIY-friendly job, there are times when you should seek professional help. If you notice that your battery terminals are melted or if the battery cables themselves are frayed and green with internal corrosion, you may need new cables.

If you replace the battery and the vehicle still won’t start, or if the new battery dies within a few days, you likely have a failing alternator or a significant electrical short. A licensed technician can perform a charging system load test to pinpoint the fault.

Also, if you are uncomfortable lifting heavy objects or working around electrical components, there is no shame in taking it to a local shop. Most auto parts stores will even install the battery for free if you buy it from them.

Frequently Asked Questions About 2017 ford explorer battery replacement

What is the average lifespan of a 2017 Ford Explorer battery?

In most conditions, you can expect a high-quality battery to last between 3 and 5 years. Factors like extreme heat, frequent short trips, and high electrical demand from aftermarket accessories can shorten this lifespan.

Can I jump-start my Explorer if the battery is completely dead?

Yes, you can jump-start a 2017 Ford Explorer using another vehicle or a portable jump pack. However, if the battery is deeply discharged, it may not hold a charge afterward and will likely need a full 2017 ford explorer battery replacement soon.

Do I really need to reset the BMS?

Yes. While the car will run without a reset, the charging logic will be incorrect. This results in the alternator working harder than necessary and the new battery not receiving the optimal charge profile, which leads to premature failure.

Which battery brand is best for the Ford Explorer?

Motorcraft is the OEM brand and is highly reliable. However, premium aftermarket brands like Odyssey, Optima (for off-road use), and Interstate also offer excellent performance and often come with better warranties.

Final Thoughts on Your Battery Project

Taking the time to handle your own 2017 ford explorer battery replacement is a great way to save money and get to know your vehicle better. It is a simple task that yields immediate results in terms of reliability and peace of mind.

Remember to prioritize safety by wearing eye protection and always disconnecting the negative cable first. Don’t forget that final BMS reset to ensure your new investment lasts as long as possible.

Whether you are prepping for a cross-country road trip or just want to make sure the kids get to school on time, a fresh battery is the heart of a dependable SUV. Stay safe, keep those terminals clean, and enjoy the road!