Change Engine Oil

The instrument cluster reads oil life from the Powertrain Control Module (PCM) via class 2 in the serial data line. The instrument cluster displays a number received from the PCM in percentages. When 0% oil life is reached, the instrument cluster shall perform the following functions:
^ Extinguish the % units.
^ Display the word LOW.

If the oil life mode was not selected by the driver upon entering the low oil life mode, then the instrument cluster performs the following functions:
^ Override the mode being displayed
^ Select the oil life mode

The driver may override the low oil life mode by selecting another mode. If the ignition switch is cycled, the instrument cluster re-enters the mode as if calculated for the first time. The RESET button transmits (while in oil life mode) the reset signal back to the PCM via the class 2 serial data line.