What position should overdrive button be in on a Nissan sunny automatic car wheh driving it?
In Nissan Sunny (and some other cars too), overdrive is ON when
the button is DEPRESSED and there's NO LIGHT in the dashboard. The
automatic transmission will utilise all the 4 forward gears (the
4th gear being the overdrive that helps in fuel economy -- similar
to 5th gear in a manual gearbox). This is the recommended setting
for normal driving.
When the button is NOT DEPRESSED, you turn OFF overdrive, and
the indicator LIGHTS UP in the dashboard. In this mode, the
automatic transmission will NOT shift into 4th gear.