Reset Mercury Mariner Change Oil Light Procedure:
- Press and release the SETUP button to display “Oil Life XXX% Hold Reset = New”
- Press and hold the RESET button for 2 seconds and release to reset oil life to 100%
- Press the SET button to access the “Sys Chck” menu
- Press and release SET button to get to “Oil Chng XXX% hold Set New” menu
- Press and hold SET button for 2 seconds or until “Oil Change Set To 100%” is shown in display
- Release the button and the oil life is now reset
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