Reading the instructions FTWFrom page 5-19 of my owner's manual:
To reset the Engine Oil Life system:
1. With the engine off, turn the ignition to ON/RUN.
2. Press and release the stem in the lower center
of the instrument cluster until the OIL LIFE
message is displayed.
3. Once the alternating OIL LIFE and RESET
messages appear, press and hold the stem
until several beeps sound. This confirms that
the oil life system has been reset.
4. Turn the key to LOCK/OFF.