2023 Toyota Prius
Key Replacement - Save vs Dealer in Ventura County
Licensed & Insured | Mobile Key Experts
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2023 Toyota Prius
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2023 Toyota Prius Smart Key Replacement - Fast, Affordable & Professional
Worst case on a 2023 Prius happened in Oxnard's Rio Lindo neighborhood. A tire shop had another locksmith out first. That guy tried programming a new HYQ14FBX fob, got error code B279A, and bailed.
The car wouldn't accept any key after that. Not the old one, not the new blank. The immobilizer was locked in fault mode, basically a brick on wheels. The tire shop called me next.
I pulled out my ACDP bench tool. When a bad programming attempt locks the Smart ECU, you need direct chip access to recover. Pulled the ID box module behind the glovebox, board number 89990-47440, and read the security data straight from the PCF7953 chip.
The previous attempt had corrupted the key registration table. I cleared the fault codes, rebuilt the registration from scratch, and authenticated through Toyota's server. The system accepted the new fob clean on the first try after reset.
Took about 90 minutes total. The owner had already gotten a dealer quote that involved towing plus a multi-day wait. I got him rolling right there at the tire shop for a fraction of what they wanted.
Save vs the Dealer on Your Toyota Prius Key
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“A friend lost my Lexus key and he was able to program and cut a brand new one within 20 minutes. Arrived within about 40 minutes and was friendly, efficient, and quick.”
“I needed two keys made for my Honda Element. Friendly, fast, fair pricing, and far better than any other locksmith I have used in the area. Best service by far.”
“I lost my Honda Passport key and called EZ Car Keyz. He came out and made a new key in under five minutes. Legendary service.”
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