2020 Buick Regal
Key Replacement - Save vs Dealer in Ventura County

2020 Buick Regal Smart Key Replacement - Fast, Affordable & Professional

Over in Oxnard near the Channel Islands National Park Visitor Center, a sales rep was stuck in a hotel conference lot with a 2020 Buick Regal Sportback and zero keys. Out-of-town, hours from home, meeting the next morning. Two other locksmiths already told him a Buick smart key all-keys-lost job couldn't be done in the field.

I pulled into the lot around 7 PM. Still light out.

The second-gen Regal runs the same GM body control module architecture as late-model Chevy, GMC, and Cadillac vehicles. The BCM on these uses a 40-bit encryption protocol tied to the immobilizer. I connected my Autel IM608 through the OBD-II port, pulled IMMO data with my ACDP as a safety backup, and started the AKL sequence. GM's security access has a timed countdown built into the process, so there's a window where you just wait.

While we waited, the guy kept looking at his phone, then back at the dash, then back at his phone. Not nervous exactly. More like he didn't believe it was going to work until it worked.

BCM accepted the new HYQ4EA fob. I cut the HU100 emergency insert blade, tested all five buttons, walked the door handles for proximity unlock, and ran the push-button start twice cold.

His car started in a hotel lot a hundred miles from home. The whole thing took under an hour. A dealer would have meant a flatbed, a wait for parts, and a bill that made the tow look cheap.

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