2004 Toyota Prius
Key Replacement - Save vs Dealer in San Diego

2004 Toyota Prius Smart Key Replacement - Fast, Affordable & Professional

I got a call from a woman parked at the Costco in South Oceanside. Her 2004 Prius fob had stopped working and she had already been to the dealer. They told her the smart key system on the Prius needed to be reprogrammed and quoted her a price that made her pause long enough to start googling alternatives.

She was skeptical when I pulled up. Not unfriendly, just the kind of skeptical that comes from being handed a big dealer quote and not fully understanding why.

The fob she handed me had a crack running right through the housing near the key ring. The board inside was fine. Terminals were clean, battery seated correctly. The fob just could not hold its shape well enough to make consistent contact.

I transplanted the board into a new shell, reseated the battery, and cycled through the registration process using my programming tool connected at the OBD port. The 2004 Prius runs an older generation of the Toyota immobilizer, and the add-key procedure through the port is well-documented at this point. New key registered, old fob functions confirmed, emergency blade tested in the door lock.

She stood there watching the whole thing in the parking lot. When I handed it back and the car responded on the first press, she said something like, "That's it?"

That's it. She saved a good chunk compared to the dealer path, and she never had to leave her car anywhere.

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