2020 Ford Explorer Key Fob Programming Guide

Losing a key fob for your 2020 Ford Explorer—or simply wanting a spare—can be a stressful and confusing experience. As an ASE-certified electrical technician and locksmith, I get asked about Ford's Passive Entry Passive Start (PEPS) smart keys on a daily basis. The good news is that Ford still allows some level of DIY programming on these newer models, provided you meet specific requirements.

Here is your comprehensive guide to getting a new fob paired to your 2020 Ford Explorer.

Quick reference

Step-by-step on-board programming

Ford's built-in security requires you to already possess two working, programmed smart keys to program a third yourself. This prevents valet attendants or mechanics from easily cloning a key while your car is in their possession. If you only have one key, or have lost all your keys, you must skip this section and consult a professional.

If you have two working keys and your unprogrammed third key, follow these steps:

1. Locate the backup slot: Open your center console storage bin. At the bottom or toward the front, remove the rubber liner to expose the backup key programming slot (shaped exactly like your fob).
2. First working key: Place the first programmed key into the backup slot.
3. Turn ignition ON: Press the Engine Start/Stop button once without pressing the brake pedal. Wait 5 seconds.
4. Turn ignition OFF: Press the Engine Start/Stop button again to turn the ignition off. Remove the first key.
5. Second working key: Within 10 seconds, place the second programmed key into the backup slot.
6. Turn ignition ON: Press the Engine Start/Stop button once (no brake pedal). Wait 5 seconds.
7. Turn ignition OFF: Press the Engine Start/Stop button again. Remove the second key.
8. Program the new key: Within 10 seconds, place the new, unprogrammed key into the backup slot.
9. Final ignition cycle: Press the Engine Start/Stop button once (no brake pedal).
10. Confirm: You should see a message on the instrument cluster stating "Key Programmed," and the door locks may cycle. Remove the new key and test its remote functions and push-to-start operation.

Battery replacement

If your current fob is acting up or displaying a "Key Battery Low" message on the dashboard, you likely just need a fresh CR2032 battery.

1. Slide the release latch on the back of the fob to slide out the emergency key blade.
2. Insert the tip of the emergency blade (or a flathead screwdriver) into the slot just behind where the blade sits.
3. Twist gently to pry the two halves of the remote shell apart.
4. Remove the old CR2032 battery and insert a new one with the positive (+) side facing up.
5. Snap the two halves of the shell back together and reinsert the emergency blade.

Where to buy a replacement fob

When sourcing a replacement key for your 2020 Explorer, you have a few distinct options:

• The Dealership: Buying an OEM key directly from Ford guarantees compatibility and top-tier build quality. However, it is the most expensive route. An OEM fob can cost between $150 and $250, not including programming and cutting fees.
• Automotive Locksmith: Locksmiths can often supply OEM or high-quality aftermarket keys at a much better rate than the dealer. Because they are mobile, they come to you. Expect to pay between $100 and $180 for the part itself.
• Amazon / eBay: You can find aftermarket remotes online for $40 to $80. While this is highly cost-effective, quality control is hit-or-miss. As a technician, I frequently see cheap online fobs fail to program due to incorrect internal circuitry. Make sure you buy from a reputable seller offering a return policy.

If on-board programming isn't supported

If you only have one working key—or zero working keys—the vehicle's immobilizer (which utilizes a Hitag Pro / ID49 transponder system) locks out the on-board programming feature.

In this scenario, DIY programming is impossible without expensive diagnostic equipment. You will need to hire a mobile automotive locksmith or tow the vehicle to the dealership. The technician will plug an advanced diagnostic scan tool into your Explorer's OBD2 port, bypass the security gateway, and authorize the new key in the vehicle's Body Control Module (BCM).

Expect to pay a programming fee of $100 to $200 on top of the cost of the key, plus $20 to $40 to have the high-security emergency blade laser-cut.

Find a mobile locksmith or shop on Repairius.