2016 Ford Explorer Key Battery – Your DIY Guide To Easy Replacement

ByRobert Lozano

A dead key fob battery can leave you stranded, but replacing the 2016 Ford Explorer key battery is a straightforward DIY task anyone can tackle. This guide provides step-by-step instructions, essential tools, and pro tips to ensure your key fob is back to full power, saving you a trip to the dealership and getting you back on the road or trail quickly.

Ever found yourself pressing your Ford Explorer’s unlock button repeatedly, only for nothing to happen? That familiar panic sets in, especially when you’re loaded up for a weekend off-road adventure or just trying to get home after a long day. A failing key fob battery is a common culprit, and it’s a problem that’s thankfully easy to fix yourself.

You don’t need to be a seasoned mechanic to handle this. We promise to walk you through the entire process of replacing your 2016 Ford Explorer key battery with confidence. This comprehensive guide will equip you with all the knowledge and practical steps needed to revive your key fob, ensuring reliable access to your vehicle.

Get ready to save time and money, and gain a satisfying sense of accomplishment. Let’s dive in and get that key fob working like new again.

Understanding Your 2016 Ford Explorer Key Fob: Types and Symptoms

Before we grab our tools, it’s helpful to understand a bit about your 2016 Ford Explorer’s key fob. Most Explorers from this year utilize a smart key, often referred to as a “proximity key” or “intelligent access key.” This allows for keyless entry and push-button start functionality.

The core principle behind these conveniences is a small coin-cell battery inside the fob, which powers its radio signal. When this battery starts to lose its charge, you’ll notice some tell-tale signs.

Common Symptoms of a Dying Key Fob Battery

Recognizing these symptoms early can prevent a frustrating situation, like being unable to start your vehicle when you’re miles from civilization.

  • Reduced Range: You have to be much closer to your Explorer for the remote functions (lock, unlock, panic) to work.
  • Intermittent Operation: Sometimes it works, sometimes it doesn’t. This can be particularly annoying when you’re trying to quickly lock up at a trailhead.
  • Push-Button Start Issues: The vehicle might display a “Key Fob Battery Low” message, or you may need to place the key fob directly into a backup slot (often in the center console or steering column) to start the engine.
  • No Response: The ultimate sign – no lights, no locks, no starting. Your key fob is completely dead.

Don’t ignore these warnings. Replacing the battery is a quick fix that restores full functionality and peace of mind.

Gathering Your Arsenal: Essential Tools for the Key Battery Swap

One of the best things about this DIY job is how few specialized tools you need. Most of what you require you probably already have around the house or in your roadside kit.

What You’ll Need

  • New Battery: For the 2016 Ford Explorer key fob, you’ll need a CR2450 3V Lithium Coin Cell Battery. It’s crucial to get the correct size and voltage. Don’t settle for anything less than a reputable brand for longevity.
  • Small Flathead Screwdriver: A jeweler’s screwdriver or a very thin blade from a small utility knife works perfectly. This is for prying open the fob case.
  • Soft Cloth or Microfiber Towel: To protect the key fob from scratches while you’re working on it.

Having these items ready before you start ensures a smooth and efficient battery replacement. No need to pause mid-job to hunt for a tiny screwdriver!

The Step-by-Step Guide: Replacing Your 2016 Ford Explorer Key Battery

This is where the magic happens. Follow these steps carefully to successfully replace your 2016 Ford Explorer key battery and get your fob working like new.

  1. Remove the Emergency Key

    Every 2016 Ford Explorer key fob has a hidden emergency key blade. Locate the small button or latch on the side or back of the fob. Press or slide it, then pull out the metal key blade. This key allows you to manually unlock the driver’s door if your fob is completely dead, a crucial feature when you’re out in the wilderness with no power.

  2. Gently Pry Open the Fob Casing

    With the emergency key removed, you’ll see a slot or seam where the key blade was. This is your access point. Insert the tip of your small flathead screwdriver into this slot. Gently twist or pry the two halves of the key fob apart. Work slowly and carefully to avoid damaging the plastic casing or the internal electronics.

    You might hear a few clicks as the clips release. Take your time; forced entry can easily damage the sensitive components inside. Place the fob on a soft cloth to prevent scratches.

  3. Locate and Remove the Old Battery

    Once the fob is open, you’ll see the circuit board and the coin-cell battery. The battery is usually held in place by small metal clips. Note the orientation of the battery (which side, positive or negative, is facing up) before you remove it. This is important for correct installation of the new one.

    Use your screwdriver or a fingernail to carefully pry the old battery out of its housing. Dispose of the old battery responsibly, as it contains lithium.

  4. Install the New CR2450 Battery

    Take your new CR2450 battery. Insert it into the battery holder, ensuring the positive (+) side is facing the correct direction, usually upwards, just as the old battery was. The positive side is typically marked on the battery itself and sometimes on the fob’s circuit board.

    Gently press the battery down until it clicks securely into place beneath the metal clips. Make sure it’s seated firmly and not loose.

  5. Reassemble the Key Fob

    Carefully align the two halves of the key fob casing. Press them together firmly until you hear and feel them snap back into place. Ensure there are no gaps and that the seam is flush all around.

    Finally, slide the emergency key blade back into its slot until it locks securely. Give it a gentle tug to ensure it’s properly seated.

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Congratulations! You’ve successfully replaced the 2016 Ford Explorer key battery. Now comes the moment of truth.

Testing and Troubleshooting Your Revived Key Fob

After all that careful work, it’s time to test your key fob. Don’t just assume it works; a quick check will confirm your success or point to any issues.

Post-Replacement Checks

Walk over to your Explorer and perform the following tests:

  • Standard Remote Functions: Stand a reasonable distance from your vehicle (e.g., 15-20 feet) and try locking and unlocking the doors. Test the panic button as well.
  • Proximity Unlock: Approach the driver’s door with the key fob in your pocket or bag. Does the door unlock automatically when you touch the handle (if equipped with intelligent access)?
  • Push-Button Start: Get into the vehicle, press the brake pedal, and attempt to start the engine without placing the key in the backup slot. If it starts without issue, you’re golden.

Troubleshooting Common Issues

If your key fob isn’t working perfectly, don’t panic. Here are a few things to check:

  • Battery Orientation: Double-check that the new battery is inserted with the correct polarity (+ side up). This is the most common mistake.
  • Battery Type: Confirm you used a CR2450 battery. An incorrect size or voltage won’t work.
  • Secure Connection: Ensure the battery is seated firmly in its clips and isn’t loose.
  • Fob Reassembly: Make sure the two halves of the fob are fully clicked together and aren’t impeding any internal components.

In rare cases, if the fob was dropped or exposed to water, the internal electronics might be damaged. If troubleshooting these basic steps doesn’t resolve the issue, it might be time for a professional diagnosis.

Pro Tips for Longevity and Avoiding Common Pitfalls

As experienced DIYers and off-road enthusiasts know, a little extra care goes a long way. Here are some tips to maximize your key fob’s life and prevent future headaches.

Extend Battery Life

  • Avoid Extreme Temperatures: Leaving your key fob in a hot car or out in freezing conditions can shorten battery life.
  • Minimize Unnecessary Button Presses: Constantly pressing buttons when not near the vehicle drains the battery.
  • Keep it Dry: Water and electronics don’t mix. Even small amounts of moisture can corrode the battery contacts or damage the circuit board.

Prevent Damage During Replacement

  • Use the Right Tools: A small, thin flathead screwdriver is essential. Using a butter knife or a large screwdriver can easily mar the plastic casing.
  • Work on a Clean, Flat Surface: This prevents small components from rolling away and makes it easier to keep track of parts.
  • Be Gentle: Force is the enemy of delicate electronics. If something isn’t coming apart easily, re-evaluate your approach rather than prying harder.
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When to Call a Licensed Professional

While replacing the key fob battery is a simple DIY task, there are times when professional help is warranted:

  • Fob Damage: If your key fob has been physically damaged (e.g., run over, submerged in water), the internal electronics might be compromised beyond a simple battery swap.
  • No Response After New Battery: If you’ve followed all the steps and confirmed the new battery is correctly installed, but the fob still doesn’t work, there might be an issue with the fob’s programming or its internal components.
  • New Fob Programming: If you’ve purchased a new key fob entirely, it will need to be programmed to your vehicle by a Ford dealership or a qualified automotive locksmith.

Don’t hesitate to consult a professional for complex issues. They have the specialized diagnostic tools and expertise to properly assess and repair or replace your key fob, ensuring your vehicle’s security system is fully functional.

Frequently Asked Questions About Your Ford Explorer Key Fob

It’s natural to have questions, especially when dealing with something as important as vehicle access. Here are some common queries about the 2016 Ford Explorer key battery and related topics.

How long does a 2016 Ford Explorer key battery typically last?

Generally, a new key fob battery for your 2016 Ford Explorer should last anywhere from 2 to 4 years. This can vary based on usage frequency, exposure to extreme temperatures, and the quality of the battery itself. Keeping a spare battery in your glove box or emergency kit is always a smart move, especially for off-roaders.

Can I use any CR2450 battery, or does it have to be a specific brand?

While the size (CR2450) and voltage (3V) are critical, the brand is less important. However, using a reputable brand like Energizer, Duracell, or Panasonic can provide better longevity and reliability compared to generic or no-name brands. Investing a few extra dollars here can save you future hassle.

Do I need to reprogram my key fob after changing the battery?

No, typically you do not need to reprogram your 2016 Ford Explorer key fob after simply changing the battery. The fob retains its programming even when the battery is removed. Reprogramming is usually only necessary if you’re introducing a brand new key fob to the vehicle’s system.

What if I lose my key fob while out on a trail?

This is a major concern for off-roaders! Always carry your emergency key blade with you, perhaps in your wallet or a separate, secure location. This allows you to manually open the driver’s door. For starting the vehicle, you might need to place the fob in a specific backup slot (refer to your owner’s manual for its exact location in your Explorer). If the fob is completely lost or damaged, you will need to contact a Ford dealership or a locksmith for a new fob and programming.

Can a low key fob battery affect my vehicle’s security system?

While a low battery primarily affects the remote functions and push-button start, it doesn’t typically compromise the vehicle’s core security system. The vehicle still recognizes the unique code of the fob, even if the signal is weak. However, a completely dead battery means you won’t be able to disarm the alarm remotely, potentially triggering it when you use the emergency key to open the door.

Revive Your Explorer’s Access Today!

Replacing the 2016 Ford Explorer key battery is a perfect example of a small, impactful DIY project that every car owner, from the daily commuter to the rugged off-roader, can master. It saves you time, money, and the frustration of being locked out or unable to start your vehicle.

By following these clear, step-by-step instructions and applying a few pro tips, you’ve not only fixed a problem but also gained valuable experience and confidence in maintaining your vehicle. Keep a spare CR2450 battery handy, and you’ll always be ready for your next adventure.

Stay safe on the road and trail, and enjoy the convenience of a fully functional key fob!

Robert Lozano
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