1998 Mercury Sable Owner Guide 1st Printing - Page 98
1998 Mercury Sable Manual
Page 98 highlights
Driving If the O/D OFF indicator light (if equipped) is flashing on and off when the vehicle is started or does not come on when the O/D OFF switch is pressed, it means there is a malfunction in your transaxle's electronic system. Contact your dealer as soon as possible or damage to the transaxle may occur. Each time the vehicle is started, the transaxle will automatically return to normal overdrive mode. When to use D (Drive) or press the O/D OFF switch (if equipped) You will notice that there is only one drive position on your gearshift indicator (instead of Drive and Overdrive). However, you will find a control labeled O/D located on the gearshift lever. Push in the switch and the O/D OFF light in the instrument cluster will illuminate. With the O/D OFF light illuminated, the transaxle will operate in first, second and third gears and will not shift into fourth gear. Operating in D (O/D OFF) provides more engine braking than Overdrive for descending hills or city driving. To return the transaxle to the normal Overdrive operation, press the O/D OFF control again. Use this control to select Overdrive or D (O/D OFF) whenever you drive your vehicle. 98