How to Reset the Oil Life on a Cadillac STS

Steps from the 2011 Cadillac STS owner's manual.

Press the up or down arrow to scroll the DIC until OIL LIFE appears.
Wait until the XXX% ENGINE OIL LIFE menu item is highlighted.
Press and hold the RESET button until the percentage shows 100%.
Start the vehicle and check that the CHANGE ENGINE OIL SOON message does not return; if it does, repeat the procedure.

Reset the system every time the oil is changed.
If the system is reset accidentally, change the oil at 3,000 miles (5 000 km) since the last oil change.

Source: 2011 Cadillac STS owner's manual, PDF pages 371, 29. 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.

Confirm with your own manual, dipstick or door-jamb label.
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