2018 Ford Explorer Key Fob Programming Guide

As an ASE-certified electrical technician and professional locksmith, I’ve programmed countless keys for Ford vehicles. The 2018 Ford Explorer is a fantastic SUV, but losing a key fob can be incredibly frustrating. Whether you have the push-to-start smart key or the standard switchblade key, knowing your options for replacement and programming can save you a significant amount of time and money.

Here is your comprehensive guide to replacing and programming your 2018 Ford Explorer key fob.

Quick reference

Step-by-step on-board programming

Ford is one of the few manufacturers that still allows DIY on-board programming for their push-to-start vehicles, but there is a major catch: You must already have TWO working, previously programmed key fobs. If you only have one working fob, or have lost all your keys, you cannot do this yourself and must seek professional help (see sections below).

If you have two working fobs and want to program a third (which I highly recommend for peace of mind), follow these steps:

1. Enter the vehicle with your two working fobs and your new, unprogrammed fob. Close all doors.
2. Open the center console storage compartment. Lift out the tray to reveal the backup key slot (a small pocket shaped like the key fob, usually located at the bottom or front wall of the console).
3. Place the FIRST working fob into the backup slot, buttons facing out.
4. Press the START/STOP button once (do not put your foot on the brake). Wait about 3 seconds, then press the START/STOP button again to turn the ignition off.
5. Remove the FIRST working fob from the slot.
6. Place the SECOND working fob into the backup slot.
7. Press the START/STOP button once. Wait about 3 seconds, then press the START/STOP button again to turn off the ignition.
8. Remove the SECOND working fob from the slot.
9. Place the NEW, unprogrammed fob into the slot.
10. Press the START/STOP button once. The instrument cluster should display a message confirming the key has been programmed.
11. Remove the new fob and test the lock/unlock buttons and remote start to ensure it was successfully paired.

Battery replacement

If your fob is acting up, the solution is usually a simple battery replacement. The 2018 Explorer smart key uses a standard CR2032 battery.

1. Slide the release latch on the back of the fob to remove the emergency metal key blade.
2. Look inside the cavity where the emergency key was. You will see a small slot or notch.
3. Insert a flathead screwdriver (or the tip of the emergency key) into the notch and gently twist to pry the two halves of the fob shell apart.
4. Carefully remove the old battery.
5. Insert the new CR2032 battery with the positive (+) side facing up.
6. Snap the two halves of the shell back together and reinsert the emergency key blade.

Where to buy a replacement fob

When sourcing a replacement fob, you have three primary options:

• The Dealership: The most expensive, but most reliable route. An OEM Ford key fob will cost between $150 to $250, plus another $100 to $150 for programming and cutting. Expect to pay $250 to $400 total.
• An Automotive Locksmith: A professional locksmith can supply an OEM or high-quality aftermarket (like Strattec) key fob. They usually charge between $150 and $250 total for the part, the laser cut, and the programming. Pro: They can come to you, saving you a tow if you've lost all keys.
• Amazon / eBay: You can find aftermarket keys online for $30 to $60. Pros: Very cheap upfront. Cons: Quality is a mixed bag, and many locksmiths or dealers will refuse to program a customer-supplied key due to warranty liabilities. If they do agree, you will still pay $75-$150 for cutting and programming, and if the cheap fob fails, you still owe the labor fee.

If on-board programming isn't supported

As mentioned, if you only have one working key (or zero), you cannot use the DIY on-board programming method. The 2018 Ford Explorer utilizes an advanced PATS (Passive Anti-Theft System) immobilizer transponder.

When you lack the required two keys, the vehicle's security system mandates the use of specialized diagnostic scan tools. A technician must connect a programmer to the OBD-II port, bypass the vehicle's security gateway, and authorize the pairing of a new transponder to the vehicle's Body Control Module (BCM). Depending on your area, expect to pay a locksmith or dealer between $100 and $150 just for this programming service, plus the cost of cutting the emergency blade.

Find a mobile locksmith or shop on Repairius.