Is your SUV refusing to unlock, or does the dash display a “Key Battery Low” warning while you are miles away from civilization? Dealing with a dead remote in the middle of a camping trip is more than just an inconvenience; it can leave you stranded.
Learning how to change battery in 2020 ford explorer key fob units is a fundamental skill for any Ford owner. It saves you an unnecessary trip to the dealership and keeps your adventure on track.
In this guide, we will walk you through the process step-by-step. You will see how simple it is to restore full functionality to your remote using only basic tools and a few minutes of your time.
Understanding the 2020 Ford Explorer Key Fob Architecture
Modern keyless entry systems are marvels of convenience, but they rely on a steady power supply to communicate with your vehicle’s immobilizer. The 2020 Ford Explorer uses a smart proximity fob that houses a small, circular coin-cell battery.
When this cell loses its charge, the signal strength drops significantly. You might notice you have to stand right next to the driver’s door to unlock it, or the push-button start fails to recognize the key inside the cabin.
Identifying the correct battery size is the first step in successful maintenance. For the 2020 model, you will typically need a CR2450 3V lithium battery. Always verify the number printed on your old battery before installing the new one to ensure a perfect fit.
Essential Tools for the Job
You do not need a professional mechanic’s toolbox to handle this task. In fact, most of the items you need are likely sitting in your junk drawer or your vehicle’s glove box.
- A small flat-head screwdriver (a precision jeweler’s screwdriver works best).
- A replacement CR2450 battery.
- A clean, dry workspace to avoid losing tiny components.
If you are out on the trail, a multi-tool with a small flat blade will suffice. Just be careful not to use excessive force, as the plastic housing on these fobs can be brittle if it has been exposed to extreme temperature fluctuations.
Step-by-Step: How to change battery in 2020 ford explorer key fob
Follow these steps carefully to open the casing without damaging the delicate internal circuitry. Take your time, especially if you are working in a tight space like a tent or a parked car.
- Remove the Emergency Key: Locate the small release button on the back or side of the fob. Press it firmly and pull out the mechanical metal key blade.
- Pry Open the Casing: Look for the seam where the two halves of the fob meet. Insert your flat-head screwdriver into the slot left by the removed key. Gently twist the tool to pop the two halves of the plastic shell apart.
- Replace the Battery: Once the fob is open, you will see the battery held in place by a small clip. Use your screwdriver to carefully nudge the old battery out. Slide the new CR2450 in with the positive (+) side facing up.
- Snap it Back Together: Align the two halves of the plastic housing and press them together until you hear a distinct click. Ensure there are no gaps along the seam.
- Test the Signal: Reinsert the emergency key and test the lock and unlock functions from a few feet away to verify the connection.
Common Pitfalls and How to Avoid Them
The most common mistake owners make is damaging the internal rubber membrane that sits beneath the buttons. If you pry too aggressively, you might tear this seal, which protects the electronics from moisture.
Another issue is the “reversed battery” error. It is easy to get distracted and place the battery upside down. Always double-check that the (+) symbol is visible once the battery is seated.
Finally, avoid touching the surface of the new battery with your bare fingers. The oils from your skin can cause corrosion or lead to poor electrical contact over time. Use a clean cloth or a pair of plastic tweezers to handle the cell during installation.
Why Proactive Key Fob Maintenance Matters
For off-roaders and weekend explorers, your vehicle is your lifeline. A dead key fob is not just a nuisance; it is a security risk if you cannot lock your gear inside the vehicle at a remote trailhead.
Keeping a spare CR2450 battery in your glove box or emergency kit is an inexpensive insurance policy. It takes up virtually no space but ensures you are never left searching for a solution when you should be enjoying the outdoors.
Consider checking the signal strength of your fob every time you perform a routine oil change. If the range starts to diminish, swap the battery immediately rather than waiting for the system to fail entirely.
Frequently Asked Questions About How to Change Battery in 2020 Ford Explorer Key Fob
Does the vehicle need to be reprogrammed after a battery swap?
No, you do not need to reprogram the key after replacing the battery. The internal chip retains its pairing information even when the power source is removed, provided you do not drop or damage the internal board.
What if my key fob still does not work after replacing the battery?
First, ensure the battery is seated correctly and the (+) side is facing up. If it still fails, check the contact points inside the fob for signs of dirt or corrosion. Use a tiny bit of electrical contact cleaner if necessary.
Can I use a different battery size if I cannot find a CR2450?
No, you must use the exact size specified by the manufacturer. Using a different size can cause physical damage to the fob or lead to poor electrical contact, which might leave you stranded.
How long should the battery in a 2020 Ford Explorer key fob last?
Under normal conditions, these batteries typically last between two to three years. However, if you keep your keys near your phone or other electronic devices, the fob may “ping” more frequently, which can drain the battery faster.
Final Thoughts for the Road
Knowing how to change battery in 2020 ford explorer key fob is a simple yet vital piece of automotive knowledge. By taking control of this basic maintenance task, you eliminate unnecessary dealership costs and ensure your vehicle is always ready for the next adventure.
Remember to keep your workspace clean, use the correct battery, and always test your remote before hitting the road. Stay prepared, keep your gear maintained, and enjoy the freedom of the open trail. Stay safe and stay comfortable out there!
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