How to Reset the Oil Life on a Acura RLX

1. Set the power mode to ON.
2. Press the SETTINGS button.
3. Rotate the interface dial to Vehicle Settings and press ENTER.
4. Move the interface dial left or right to choose the Maintenance Info. tab.
5. Rotate the dial to Maintenance Reset and press ENTER.
6. Move the dial down to RESET and press ENTER.
7. When the confirmation message appears, select Reset and press ENTER.

• The displayed maintenance items disappear and engine oil life returns to 100%.
• Select Cancel and press ENTER to cancel the reset mode.
• Reset the display yourself if someone other than a dealer did the service.

Source: 2020 Acura RLX owner's manual, PDF page 449. 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.