How to Reset the Tire Pressure Light (TPMS) on a Buick Lucerne

1. Set the parking brake and turn the ignition to ON/RUN with the engine off.
2. Press the RKE transmitter's lock and unlock buttons together for about five seconds until the horn sounds twice and TIRE LEARNING ACTIVE shows.
3. Start at the driver side front tire, hold the relearn tool against the sidewall near the valve stem, and press its button until the horn chirps.
4. Repeat at the passenger side front, then passenger side rear, then driver side rear tire.
5. After the horn sounds twice at the driver side rear, turn the ignition to LOCK/OFF.
6. Set all four tires to the pressure on the Tire and Loading Information label.

• Needed after rotating tires, replacing a TPMS sensor, or swapping a spare for a road tire with a sensor.
• You have two minutes for the first tire and five minutes overall, or the process stops and must be restarted.

Source: 2011 Buick Lucerne owner's manual, PDF pages 355, 213. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.