2014 Ford Expedition
Key Replacement - Save vs Dealer in San Diego

The 2014 Expedition uses a remote head key -- that's the fob with the key blade folded into the body, not a separate fob clipped to a separate key. Five buttons, CR2032 battery. When one of these starts acting up, owners usually blame the fob first. Nine times out of ten it's either a dead battery or a loose battery contact pressing against a corroded clip. Swap the CR2032 before you conclude anything. The bigger thing people miss: this generation requires the immobilizer to recognize the transponder chip inside the remote head key before the engine will run. Cutting a blade that turns the ignition is only half the job. If the chip isn't enrolled into the vehicle's system, you'll get the engine cranking and immediately dying, sometimes with a key-or-lock warning on the dash. That's not a bad key blank. That's an unprogrammed chip. You need the programming side done right alongside the cut. If you already have one working key, adding a second one is faster and simpler than an all-keys-lost job. All-keys-lost takes longer because the system has to be cleared and reset before new keys can be enrolled. Have at least one key in hand before it gets to that point.