🔧 Explorer - Battery Replacement

This is a solid beginner job. Your Explorer uses a Group 65 battery, and the replacement must match or exceed the original electrical rating. An AGM battery, which uses sealed absorbent glass mat construction, is the best fit for the Platinum’s heavy electrical load.

Difficulty Level: Beginner | Estimated Time: 30-45 minutes

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⚠️ Safety & Precautions

• ⚠️ Wear safety glasses and gloves. Battery acid can cause serious burns.
• ⚠️ Keep sparks, cigarettes, and open flames away from the battery.
• ⚠️ Remove the negative cable first and reconnect it last.
• ⚠️ Don’t let a metal tool touch both battery terminals or a positive terminal and body metal.
• ⚠️ Don’t lift the battery by its terminals. A Group 65 battery is heavy.
• ⚠️ Don’t damage, bypass, or relocate the battery-monitoring sensor fitted around the negative cable.
• ⚠️ Switch the ignition off and keep the key away from your Explorer before disconnecting anything.

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🔧 Required Tools

You'll need the following tools for this repair:

• 8mm socket
• 10mm socket
• 13mm socket
• 3/8-inch ratchet
• 6-inch socket extension
• Battery terminal brush
• Battery lifting strap
• Inch-pound torque wrench
• OBD-II scan tool with Ford BMS reset function (specialty)
• Nitrile work gloves
• Safety glasses

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Group 65 AGM vehicle battery - Qty: 1
• Battery terminal cleaner spray - Qty: 1
• Battery terminal protector washers - Qty: 1 set

Battery selection: Match the battery type, terminal orientation, cold-cranking amperage, and reserve capacity printed on the original battery. Don’t downgrade from AGM to a conventional flooded battery.

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📋 Before You Begin

• 📋 Park on level ground, shift into Park, and apply the parking brake.
• 📋 Lower one window so you can still access the cabin if the locks cycle.
• 📋 Switch off the lights, climate control, radio, and every accessory.
• 📋 Open the hood, switch the ignition off, and move the key at least 10 feet away.
• 📋 Wait at least two minutes before disconnecting the battery so the vehicle’s modules can save their data.
• 📋 Record radio presets if you want to restore them afterward.

Ford warns that the battery must match the vehicle’s electrical requirements and that electrical grounds must not bypass the battery-monitoring sensor. fordservicecontent.com)

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Remove the battery covers

• Locate the battery on the driver side of the engine compartment.
• Release the retaining tabs and lift off the plastic battery cover.
• If an intake duct blocks access, use the appropriate 8mm socket or release its clips by hand, then move the duct aside without pulling on attached wiring.

Step 2: Disconnect the negative cable

• Identify the negative terminal marked with a minus sign.
• Use a 10mm socket and 3/8-inch ratchet to loosen the negative terminal clamp.
• Lift the clamp straight off and position it where it cannot spring back onto the battery post.
• Handle the negative cable by its clamp. Don’t pry against the battery-monitoring sensor.
• Negative first prevents accidental short circuits.

Step 3: Disconnect the positive cable

• Open the red positive-terminal cover.
• Use a 10mm socket and 3/8-inch ratchet to loosen the positive terminal clamp.
• Lift the clamp off and keep it away from body metal.

Step 4: Remove the battery hold-down

• Locate the hold-down clamp at the base of the battery.
• Use a 13mm socket, 6-inch extension, and 3/8-inch ratchet to remove its bolt.
• Remove the clamp and place the bolt where it won’t fall into the engine compartment.

Step 5: Lift out the old battery

• Fit the battery lifting strap securely around the battery.
• Lift the battery straight upward while keeping it level.
• Set it upright on a stable surface. Nobody enjoys finding battery acid on their shoes.
• Inspect the tray for corrosion, cracks, or trapped moisture.

Step 6: Clean the tray and terminals

• Put on nitrile work gloves and safety glasses.
• Apply battery terminal cleaner and use the battery terminal brush on the inside of both cable clamps.
• Wipe the tray clean and let everything dry completely.
• Replace a cracked, stretched, or badly corroded terminal instead of forcing it tight.

Step 7: Install the new battery

• Compare the new and old batteries before installation. The case size and positive-terminal position must match.
• Use the battery lifting strap to lower the new battery squarely into the tray.
• Make sure the battery sits flat and doesn’t trap any wiring underneath it.
• Reinstall the lower hold-down clamp using the 13mm socket, extension, and torque wrench.
• Tighten the hold-down securely to the applicable Ford service specification. Don’t overtighten it because a distorted or cracked battery case can leak.

Step 8: Connect the positive cable

• Install the terminal protector washer if supplied.
• Push the positive clamp fully down onto the positive post.
• Use the 10mm socket and inch-pound torque wrench to tighten the clamp only until it cannot rotate by hand.
• Close the red positive-terminal cover.

Step 9: Connect the negative cable

• Push the negative clamp fully down onto the negative post.
• Use the 10mm socket and inch-pound torque wrench to tighten the clamp only until it cannot rotate by hand.
• Make sure the battery-monitoring sensor and its small electrical connector remain secure.
• Never hammer a terminal clamp onto a battery post.

Step 10: Reinstall the covers

• Reinstall the intake duct and any fasteners using the 8mm socket and 3/8-inch ratchet.
• Reinstall the plastic battery cover and confirm every retaining tab is seated.
• Check that no tools remain in the engine compartment.

Step 11: Reset the Battery Management System

• Connect the OBD-II scan tool with Ford BMS reset function to the diagnostic connector below the driver-side dashboard.
• Switch the ignition on without starting the engine.
• Select the scan tool’s Ford > Body Control Module > Battery Monitoring System Reset function, or the equivalent menu supplied by the tool.
• Confirm that a new battery has been installed and wait for the successful-reset message.
• Switch the ignition off and disconnect the scan tool.

The 2019 Ford information states that some features may not operate correctly unless the battery-monitoring system is reset with a scan tool after battery replacement. fordservicecontent.com

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✅ After Repair

• ✅ Start your Explorer and verify that the battery and charging-system warning lights turn off.
• ✅ Reset the clock, radio presets, and power-window bounce-back function if necessary.
• ✅ Let the engine reach normal operating temperature and idle for at least one minute.
• ✅ With the brake held, shift into Neutral and let the engine run for at least one additional minute.
• ✅ Drive at least 12 miles or 20 kilometers so the engine computer can relearn its idle and fuel-trim settings.
• ✅ Expect slightly different idle quality or transmission behavior during the initial relearn.
• ✅ Return the old battery to a battery retailer or authorized recycling center. Don’t place it in household waste.

Ford’s 2019 relearn procedure calls for warming the engine, completing the idle steps, and driving at least 12 miles after battery power has been disconnected. fordservicecontent.com

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💰 DIY vs Shop Cost

Shop Cost: $275-$500 equivalent, including battery, labor, and system reset

DIY Cost: $188-$320 equivalent for a suitable Group 65 AGM battery and supplies

You Save: Approximately $75-$180 by doing it yourself!

Local labor and battery prices vary. This repair takes a shop approximately 0.5-1.0 hour.

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🎯 Ready to get started?

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