How To Open 2020 Ford Explorer Key Fob – Step-By-Step Battery
To open your 2020 Ford Explorer key fob, you must first remove the internal emergency key by sliding the release latch on the back of the casing. Once the mechanical key is out, use its tip or a small flathead screwdriver to gently pry the two halves of the fob apart to access the CR2450 battery.
It is a frustrating moment when you walk up to your vehicle and the doors refuse to unlock. Many owners worry that a dead remote means a trip to the dealership, but the fix is actually quite simple. Knowing how to open 2020 ford explorer key fob units is a vital skill for any DIY mechanic or weekend adventurer.
I have spent years helping drivers navigate the quirks of modern proximity keys and smart entry systems. In this guide, I will walk you through the exact process of opening the casing without damaging the delicate internal electronics. You will also learn how to start your vehicle even if the fob battery is completely drained.
Whether you are preparing for a remote off-road trip or just need to get to work, this walkthrough provides the technical clarity you need. We will cover the specific tools required, the correct battery type, and pro tips to ensure your Ford remains secure. Let’s dive into the hardware and get your Explorer back on the road.
Understanding the 2020 Ford Explorer Smart Key System
The 2020 Ford Explorer utilizes a sophisticated Intelligent Access system that relies on a high-frequency signal to communicate with the vehicle. This fob does more than just lock and unlock doors; it enables the push-button start and stores driver profile settings. Because it is constantly “listening” for the vehicle, the battery life typically spans two to four years.
Inside the sleek plastic housing is a complex circuit board and a transponder chip. When you learn how to open 2020 ford explorer key fob cases, you must be careful not to introduce static electricity or moisture. These fobs are robust, but a heavy-handed approach can snap the plastic retaining clips that keep the unit weather-sealed.
Most 2020 models come with the “flip-key” style or the more common “proximity” fob without a visible key blade. This guide focuses on the proximity fob, which is the standard for the XLT, Limited, ST, and Platinum trims. Understanding the anatomy of this device is the first step toward a successful repair.
Essential Tools and Materials
Before you begin prying at the plastic, ensure you have the right supplies on hand. Using the wrong tool is the fastest way to gouge the casing or crack the internal frame. You do not need a professional automotive toolkit, but a few specific items will make the job seamless.
- Replacement Battery: You will need a 3-volt CR2450 lithium coin cell battery.
- Small Flathead Screwdriver: A precision screwdriver (like those used for eyeglasses) is ideal for prying.
- Microfiber Cloth: Use this to hold the fob to prevent skin oils from getting on the circuit board.
- The Emergency Key: This is already tucked inside your fob and serves as the primary prying tool.
Double-check your battery model before starting. While many Ford fobs use the smaller CR2032, the 2020 Explorer specifically requires the CR2450. This larger battery provides the higher capacity needed for the proximity sensors and remote start features.
how to open 2020 ford explorer key fob Safely
Opening the casing requires a blend of firm pressure and delicate finesse. The goal is to separate the two halves of the shell without leaving unsightly marks on the plastic. Follow these steps carefully to ensure the internal components remain seated in their correct positions.
Step 1: Remove the Emergency Mechanical Key
On the back of the key fob, you will find a small release switch or latch. Slide this latch with your thumb while simultaneously pulling on the top of the fob (the part where a keychain would attach). The internal metal key should slide out easily.
This mechanical key is your “fail-safe” for manually unlocking the driver’s door. Set it aside for a moment, but keep it within reach. You will actually use the tip of this key to help separate the housing in the next step.
Step 2: Prying the Casing Halves
Look at the area where the mechanical key was just removed. You will notice a small slot or a recessed edge between the two plastic halves of the fob. Insert the tip of the mechanical key—or your small flathead screwdriver—into this slot.
Apply a gentle twisting motion rather than a straight prying force. You should hear a faint “click” as the internal plastic tabs begin to release. Work your way around the edge of the fob slowly until the back cover pops off completely.
Step 3: Accessing and Replacing the Battery
With the back cover removed, the CR2450 battery will be visible. Note the orientation of the battery before you remove it; the “plus” (+) side should be facing toward you. Use your fingernail or a plastic pick to pop the old battery out of its housing.
Slide the new battery into place, ensuring it sits flush under the small metal contact tabs. Avoid touching the flat surfaces of the new battery with your bare fingers. Oils from your skin can create a film that increases resistance and shortens the battery life.
Reassembling and Testing the Fob
Once the new battery is seated, it is time to close the unit. Align the back cover with the front half of the fob, making sure the buttons on the front are not misaligned. Press the two halves together firmly until you hear them snap shut across the entire perimeter.
Slide the mechanical emergency key back into its slot until it clicks into place. Now, stand near your 2020 Ford Explorer and test the “Lock” and “Unlock” buttons. If the lights flash and the locks cycle, you have successfully completed the repair.
If the vehicle does not respond immediately, do not panic. Sometimes the fob needs a moment to re-sync with the vehicle’s security module. Simply stand close to the driver’s door and press the unlock button several times in quick succession.
Pro Tip: Cleaning the Contacts
While you have the fob open, take a second to inspect the metal battery contacts. If you see any white powdery residue or dullness, this is oxidation. Use a cotton swab dipped in a tiny amount of isopropyl alcohol to clean the contacts.
This simple maintenance step ensures a strong electrical connection. It can prevent the “Low Key Fob Battery” warning from appearing on your dashboard prematurely. A clean connection is especially important if you live in humid or coastal environments where salt air can accelerate corrosion.
Troubleshooting Common Fob Issues
Sometimes, knowing how to open 2020 ford explorer key fob units isn’t enough to solve the problem. If you have replaced the battery and the fob still fails to operate, there may be deeper issues at play. Let’s look at the most common culprits for a non-responsive smart key.
Signal Interference and Dead Zones
Proximity keys operate on a specific radio frequency. If you are parked near a large cell tower, a microwave relay, or even some high-end security systems, the signal may be blocked. This is common in dense urban areas or near military installations.
If your fob isn’t working, try holding it directly against the driver’s door handle. This reduces the distance the signal must travel and can often bypass local interference. If the fob works when held against the handle but not from five feet away, the battery might still be weak, or the internal antenna is failing.
Internal Damage and Button Wear
If you have dropped your fob on concrete or submerged it in water during an off-road trip, the circuit board may be damaged. Open the fob again and look for any signs of corrosion or loose components. If the green board looks charred or has green crusty buildup, the fob likely needs replacement.
Furthermore, the rubber membrane behind the buttons can wear out over time. If only one button (like “Remote Start”) fails to work while others function perfectly, the physical switch on the board may be stuck. A quick cleaning with electronic contact cleaner can sometimes revive a “sticky” button.
Emergency Procedures: Starting Your Explorer with a Dead Fob
If you are stranded and don’t have a spare CR2450 battery, Ford has built in a “backup” method to start the engine. Every 2020 Explorer has a specific location where the vehicle can read the fob’s passive RFID chip, even if the battery is completely dead.
In the 2020 Ford Explorer, the backup slot is typically located at the bottom of the center console storage bin or inside one of the cupholders. You may need to remove the rubber mat at the bottom of the cupholder to see the fob-shaped indentation.
- Open the center console or check the cupholders for the backup slot.
- Place the key fob into the slot with the buttons facing up (or as indicated in your owner’s manual).
- Press the brake pedal firmly.
- Press the Push-Button Start button.
The vehicle should recognize the fob immediately and allow the engine to crank. This is a life-saving feature if you are out in the wilderness or at a remote campsite. Once the engine is running, you can drive to the nearest store to pick up a fresh battery.
Protecting Your Key Fob for the Long Haul
For those who enjoy off-roading or spend a lot of time outdoors, the key fob is a piece of gear that needs protection. Dust, sand, and moisture are the enemies of electronic components. Consider investing in a silicone or TPU fob cover to add an extra layer of defense.
These covers provide impact protection if you drop your keys on a rocky trail. They also help seal the seams of the casing against fine dust. If you frequently cross rivers or deal with heavy rain, keeping your fob in a small waterproof “dry bag” inside your pocket is a smart move.
Lastly, always keep a spare CR2450 battery in your glove box or your recovery gear bag. They are inexpensive and have a shelf life of nearly ten years. Having a spare on hand means you will never have to worry about how to open 2020 ford explorer key fob casings in a high-stress situation without a solution.
Frequently Asked Questions About how to open 2020 ford explorer key fob
What battery does the 2020 Ford Explorer key fob use?
The 2020 Ford Explorer proximity key fob requires a single CR2450 3V lithium battery. This is a larger, thicker coin cell than the CR2032 found in older Ford models, so ensure you purchase the correct size.
Will I need to reprogram my key after changing the battery?
No, you typically do not need to reprogram the fob after a battery swap. The remote’s memory is non-volatile, meaning it retains its programming even when power is lost. Simply replace the battery and it should work immediately.
Can I open the fob without a screwdriver?
Yes, you can use the tip of the internal mechanical emergency key to pry the casing open. Ford designed the key and the slot to work together for this exact purpose, making it possible to change the battery even if you don’t have tools.
Why does my dashboard still say “Low Key Fob Battery” after I changed it?
This usually happens if the new battery is old (low voltage from the store) or if the contacts inside the fob are dirty. Try cleaning the metal tabs with alcohol. If the message persists, drive the vehicle for 10-15 minutes to allow the system to refresh the status.
Final Thoughts for the DIY Explorer Owner
Maintaining your vehicle’s entry system is a fundamental part of modern car ownership. By mastering how to open 2020 ford explorer key fob units, you save time, avoid dealership markups, and gain the confidence to handle minor electrical issues on your own. It is a simple task that ensures your Ford remains a reliable partner for your daily commutes and weekend escapes.
Remember to always prioritize safety and use gentle pressure when working with plastic components. Keep a spare battery in your vehicle, and take a moment to locate your emergency backup slot before you actually need it. With these tips in mind, you are ready to keep your Explorer’s tech running perfectly.
Stay safe on the road, keep your gear in top shape, and enjoy the peace of mind that comes with being a prepared DIYer!
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