Service oil reset Honda Prelude

1982-1989
Insert ignition key into slot below indicator flag at lower right corner of instrument cluster.
Push key in until indicator changes from red to green.
1990-1999
Insert ignition key into centre slot located on the front of the instrument cluster. When reset, the indicator changes to green.
2000-2002
Reset the coloured indicator by inserting your key in the slot beside the indicator.