How to Reset the Oil Life on a Cadillac XT4

1. Put the vehicle in P (Park).
2. On the infotainment home screen, select Vehicle Status > Maintenance > Oil Life.
3. Follow the menu and select Reset on the display screen.
4. Select Reset again to confirm; the percentage changes to 100%.

• Reset the system every time the oil is changed; it will not reset itself.
• The system is reset when the CHANGE ENGINE OIL SOON message is off; if it returns at startup, repeat the procedure.

Source: 2025 Cadillac XT4 owner's manual, PDF pages 241, 114. 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.