Mercury 2001 Grand Marquis User Manual page 69

Controls and features
OVERDRIVE CONTROL
Activating overdrive
(Overdrive) is the normal drive position for the best fuel economy.
The overdrive function allows automatic upshifts and downshifts through
all available gears.
Deactivating overdrive
If your vehicle is equipped with a
column-shift transmission, press the
O/D
Transmission Control Switch (TCS)
ON/OFF
located on the end of the gearshift
lever.
If your vehicle is equipped with a
floor-shift transmission, overdrive
can be deactivated by pressing the
Transmission Control Switch (TCS)
on the gearshift handle.
The Transmission Control Indicator
Light (TCIL) will illuminate on the
instrument cluster.
The transmission will operate in all
gears except overdrive. To return to
normal overdrive mode, press the Transmission Control Switch again.
The TCIL will no longer be illuminated.
When you shut off and re-start your vehicle, the transmission will
automatically return to normal (Overdrive) mode.
For additional information about the gearshift lever and the transmission
control switch operation refer to the Automatic Transmission
Operation section of the Driving chapter.
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