2006 Buick Lucerne
Key Replacement - Save vs Dealer in San Diego

2006 Buick Lucerne Transponder Key Replacement - Fast, Affordable & Professional

I got a call from a mom in the Carmel Valley part of Del Mar, in a school parking lot, car not starting. She had one key for her 2006 Buick Lucerne and it had been giving her grief for about a week - sometimes the security light would flash at startup and the engine would crank without catching. That day it just quit.

She had already called the dealer. Two days minimum, they said, because they needed to order the correct chipped key blank and schedule a programming appointment. That was not going to work. She had pickup in twenty minutes.

I pulled in, connected to the OBD port, and pulled the security system data first. No immobilizer lockout, no fault pointing at the module. The antenna ring on the ignition cylinder was reading the transponder weakly. The key itself was fine mechanically - the blade was good, the chip was intact - but the read was borderline every time.

I cut a new key blade to her vehicle and programmed the transponder to the car right there in the lot. Checked it cold, checked it again after a minute, cycled it three times. Solid read each time. She had a working key and was backing out before the next bell rang.

The dealer estimate was still sitting in her texts when she drove away. She saved a good chunk staying off that path entirely.

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