Mercury 2002 Villager Owner's Manual page 164

Driving
Overdrive — column mounted gearshift with O/D off switch
The Overdrive position with the O/D
P R N D 2 1
OFF switch not depressed is the
normal driving position for this
automatic overdrive transaxle. When your vehicle cruises at a constant
speed for any length of time, this fourth gear will increase your fuel
economy.
Overdrive may not be appropriate
for certain terrains. If the transaxle
OVERDRIVE
OFF/ON
shifts back and forth between third
and fourth gears while you are
driving hilly roads or if your vehicle
requires additional power for climbing hills, press the O/D OFF switch.
Each time the vehicle is started, the transaxle will automatically return
to normal overdrive mode.
If your vehicle is on an extremely slippery surface, the Transaxle Control
Module may receive a signal indicating a rapid increase or decrease in
wheel speed. When the module detects this condition, it will limit the
transaxle operation to Third and Reverse gears. This reduces tire
slippage and protects the transaxle. The transaxle will operate normally
in Reverse, but will lack power during acceleration in Drive.
If this happens;
1. Stop your vehicle as soon as possible.
2. Turn the ignition off for three seconds.
3. Restart the vehicle.
If the condition still exists, contact your dealer as soon as possible.
If the O/D OFF indicator light is flashing on and off repeatedly when the
vehicle is started or does not come on when the O/D OFF control is
pressed, there may be a transaxle electronic system malfunction. You
should contact your dealer as soon as possible or damage to the
transaxle could occur.
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