2012 Jaguar XJ
Key Replacement - Save vs Dealer in Ventura County

2012 Jaguar XJ Smart Key Replacement - Fast, Affordable & Professional

A music teacher near the UCSB campus called me on a Monday. She had already called the Jaguar dealer that morning about her 2012 XJ. Their answer: Thursday at the earliest, and that was just the appointment. The fob might need to be ordered, and the car would need a tow in.

She teaches violin lessons every afternoon. She drives her kids to school every morning. Four days without a car meant four days of scrambling.

I was in her studio parking lot that same afternoon. Connected to the OBD port, loaded the Jaguar module in my Smart Pro, and started the smart key registration through the KVM. The 2012 XJ uses a Hitag2 crypto transponder inside the KOBJTF10A fob, five buttons, CR2032 battery, with the emergency blade profile HU101 that still needs to be cut even on a smart key.

Cut the blade, registered the fob, and then did the boring walk-around. Lock from driver handle. Unlock from passenger. Trunk release from the button and from the fob. Push to start with the key in my pocket, then on the dash, then in the center console. Proximity detection from all four doors.

She picked up her kids that afternoon like nothing happened. Monday call, Monday fix, a fraction of what the dealer quoted, and no tow truck involved.

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