Ford 1996 Taurus Manual page 90

Overdrive Off Indicator
This light tells you that the Overdrive Off (O/D
OFF) switch on the gearshift lever has been
pushed. When the light is on, the transaxle will
not shift into overdrive. Depressing the O/D
OFF switch located below the gearshift release
button on the floor gearshift or located on the
end of the column gearshift will return the
vehicle to "overdrive on" mode. The transaxle
will be in the "overdrive on" mode when the
vehicle is started even if the "O/D OFF" mode
was selected when the vehicle was last shut off.
If the light does not come on when the O/D
OFF switch is depressed or if the light flashes
when you are driving, have your vehicle
serviced at the first opportunity. If this condition
persists, damage could occur to the transaxle.
Overdrive off indicator
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