How to Reset the Tire Pressure Light (TPMS) on a Cadillac CT4

1. After rotating tires or replacing a TPMS sensor, keep the vehicle stationary for about 20 minutes once a tire is installed.
2. Drive the vehicle at a minimum speed of 20 km/h (12 mph).
3. Continue driving for up to 10 minutes while the sensors are matched automatically.
4. Watch the DIC, which shows a dash (-) or a pressure value during the relearn.

• The manual gives no button or menu reset; the system relearns automatically (Auto Learn Function).
• A DIC warning message appears if a problem occurs during the relearn process.

Source: 2026 Cadillac CT4 owner's manual, PDF page 337. 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.