2002 Ford Explorer Key Replacement

The 2002–2010 Explorer uses the same key setup, so everything on this page applies to those years too. The full picture is on the Ford Explorer key guide.

2002 Ford Explorer: key facts

Key type: Transponder chip key
Push-to-start: No
Transponder chip: 4D63
Programming: OBD
All keys lost: We can originate new keys on site

4D63 family confirmed by Explorer fitment listings; 40-bit-era vehicles, and aftermarket dual-mode 40/80-bit chips cover them. Onboard add-a-key works with two working keys.

What kind of key does a 2002 Ford Explorer use?

The 2002 Explorer uses a transponder key. Inside the plastic head sits a 4D63 chip, and the PATS anti-theft system has to read that chip before the engine will keep running. This is not a push-to-start vehicle. You have a conventional key that goes into the ignition cylinder. The 4D63 chip family is verified against Explorer fitment listings from key-hardware suppliers.

The key also has a mechanical cut, the 8-cut blade, which works the door locks and turns the ignition. That is why a plain cut key can fool you: it can open the door and turn in the cylinder, but without a chip the truck will not run.

This is a 40-bit-era vehicle, and aftermarket dual-mode 40/80-bit chips cover it. In practice, a replacement for this Explorer does not have to be a dealer-branded part to be read by the truck.

Duplicate or all keys lost: what is different on this Explorer?

A duplicate needs an original key to work from. We cut the blade to match and program the chip so PATS accepts it. Programming on this year runs through the OBD port, and no NASTF SDRM credential is required for it. That keeps the job simple when you still have a key in hand.

All keys lost is also possible on this Explorer. We cut a new key from the lock and program it through the OBD port. We will ask you to show you own the vehicle before we make a key.

If you have two working keys and only want a spare, onboard add-a-key works with two working keys. Ask us which route fits your situation when you call. With fewer than two keys, the job is a programming job rather than an onboard one.

What goes wrong with 2002 Explorer keys?

These are the problems that come up most on this year:

Worn ignition lock wafers on high-mileage vehicles. The key sticks or will not turn. A new key alone will not cure a worn cylinder, so we look at the lock as well as the key.
Worn 8-cut key blades that stop turning the locks. A fresh cut from a worn key can inherit the wear, so we cut from the lock or a better reference where we can.
PATS theft light flashing. The engine cranks but will not start because the chip is not being read.
Hardware-store copies cut without a transponder. They open the doors but will not start the engine.

What affects the price of a 2002 Explorer key?

We quote by phone once we know your situation. These are the things that move the cost:

Whether you still have a working key. A duplicate is usually the more economical route compared with all keys lost.
How many keys you want made and programmed in one visit.
Whether the ignition cylinder is worn enough that the lock itself needs attention along with the key.
Where the Explorer is. Coming to our Westwood storefront and a mobile van call-out are different jobs.
The time of day you need us, since we answer around the clock.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

Confirming your Explorer, and who you are calling

The chip family for this year is verified, but we still confirm by VIN or in person before cutting anything, so the key we make matches your actual truck.

Wilshire Lock & Key has been in business since 1987, with a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans. One company handles your call, with no dispatch middlemen, and David, the owner and lead technician, oversees the work. We serve 140 cities across Los Angeles and Ventura counties. California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it.

For more Ford options, see our Ford key pages or the Explorer key guide. You can also contact us to describe your situation, or call (213) 577-1366.

Frequently asked questions

Can you make a 2002 Ford Explorer key if I lost every key?

Yes. All keys lost is possible on this Explorer. We cut a new key and program it through the OBD port. We confirm the vehicle by VIN and ask you to show ownership first.

Will a hardware-store copy start my 2002 Explorer?

Usually not. A copy cut without a transponder chip can open the doors and turn in the lock, but the engine will not start because PATS cannot read a chip.

Is the 2002 Explorer push-to-start?

No. It uses a conventional transponder key with a 4D63 chip that goes into the ignition cylinder.

Does the 2002 Explorer need a dealer for key programming?

Our data for this year shows OBD programming with no NASTF SDRM credential required, so a dealer-only step is not part of this setup. We still confirm by VIN before we start.

The PATS light is flashing and my Explorer cranks but will not start. Is it the key?

It can be. That symptom shows up when the chip is not being read. We check the key and the situation before saying what is needed, because a worn key or a copy without a chip can both cause it.

I have two working keys. Can I add a spare?

Yes. Onboard add-a-key works on this Explorer when you have two working keys. Call us and we will tell you whether that route fits or whether a programming visit makes more sense.

We cover all these cities

Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.