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2010 MERCURY Mariner Maintenance Light Reset Instructions

1. Turn the ignition to run (one position before starting engine).
2. Press and release the SETUP button to display “OIL LIFE XXX% HOLD RESET = NEW”.
3. Press and hold the RESET button for two seconds and release to reset the oil life to 100% and “OIL LIFE SET TO 100%” is displayed.
4. Turn the ignition off and then start the engine to verify the indicator has been reset.

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