2004 Ford Expedition key fob.

OEM & aftermarket part numbers

The 2004 Ford Expedition ships from the factory with a basic rke remote identified by the OEM part numbers below. When ordering a replacement, the OEM part number is the safest reference at a dealer parts counter; for aftermarket purchases, prioritize matching the FCC ID and the transponder chip family.

Aftermarket fobs for the 2004 Ford Expedition typically run $15–$35, while OEM units from a Ford dealer cost $80–$140 for the same hardware. Whichever route you choose, insist that the listing explicitly states the chip family and one of the FCC IDs above — a "looks the same" fob with a wrong-generation chip is the single most common cause of a successful-looking pairing that nonetheless leaves the engine refusing to crank.

Button configuration

The OEM 2004 Expedition fob carries the following buttons. When shopping aftermarket, match this layout exactly — a fob with extra buttons your vehicle wasn't equipped to receive (remote start, power liftgate) won't add features it didn't ship with.

Transponder chip & immobilizer

This vehicle uses a basic RKE remote with no transponder chip. Pairing is purely a body-control-module learn procedure; the engine immobilizer (if any) is decoupled from the keyless entry remote.

Aftermarket programmer compatibility

No aftermarket programmer table applies to this model year: the factory fob is a basic RKE remote with no transponder chip, so pairing is a body-control-module learn procedure rather than immobilizer key programming. See the pairing notes below.

Pairing notes for this model year

Onboard pairing procedures are viable for the 2004 Expedition when you have at least one already-paired working key in hand. The exact ignition-cycle or door-lock sequence is documented in the owner's manual; for vehicles with onboard pairing, consult our how programming works reference for the underlying mechanics, then follow the make-specific procedure.

For all-keys-lost scenarios on the 2004 Expedition, you'll need a programmer that can write directly to the immobilizer module — that's an OBD-II programmer regardless of how onboard-friendly the model otherwise is. Locksmith pricing for all-keys-lost typically runs $250–$450.

Verifying the fob is paired

After pairing, walk ten feet from the vehicle and test all of the following from the new fob: lock, unlock, panic (if equipped), and trunk or liftgate. Each should respond on the first press. Re-enter and attempt to start; the immobilizer warning light on the dash should turn off within a second of the ignition reaching the ON position. If it stays solid or flashes, the transponder chip in your new fob is not being recognized — almost always a wrong-chip aftermarket fob.

Source notes

Vehicle make and model names are seeded from the public NHTSA vPIC database; year-by-year production coverage has not been individually validated, and some listed model years may not correspond to a vehicle actually sold in North America. OEM part number prefixes derived from documented Ford parts catalog conventions; specific suffixes and aftermarket SKUs are illustrative pending direct OEM confirmation per VIN. FCC IDs sourced from the FCC ID public database. Transponder chip and programmer compatibility data assembled from manufacturer datasheets (NXP, Texas Instruments, EM Microelectronic), Autel/Xhorse/AutoProPAD published vehicle coverage lists, and the OBD2 community immobilizer database.

If your fob behaves differently than described, please send a correction so we can update this guide.

Coverage data last audited for accuracy: 2026-07-06 — see our data accuracy & sourcing methodology for known gaps and verified fields.