Ford Mercury Villager 1997 Owner's Manual page 30

OD/TRIP — The OD/TRIP button lets you switch the display
between the permanent odometer mileage and the trip
odometer mileage.
Fuel computer functions
Fuel and distance computer display
OUTSIDE TEMP
This feature lets you display the temperature of the air outside of
your vehicle.
The fuel and distance computer is designed to prevent inaccurate
temperature display readings. For example, a sudden
temperature change (such as driving out of a cool garage on a
warm day), may show outside temperature display readings which
are lower than expected. The accurate temperature will be
displayed after the vehicle has reached the outside temperature
and is driven at speeds of 30 mph (48 km/h) or greater.
In the event of a decrease in the outside air temperature, there
will be no delay in an accurate temperature display.
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