Mercury 2002 Cougar Owner's Manual page 124

Driving
Drive – Not shown on the display. Activate by pressing the transaxle
control switch (TCS) on the underside of the gearshift handle with the
gearshift in the
instrument cluster. Transaxle operates in gears one through three.
(Drive) provides more engine braking than
when:
driving with a heavy load.
towing a trailer up or down steep hills.
additional engine downhill braking is desired. If towing a trailer, refer
to Driving while you tow in the Trailer towing section.
To return to
(TCS). The TCIL (O/D OFF) will no longer be illuminated.
Each time the vehicle is started, the transaxle will automatically return
to normal overdrive mode.
Every time the vehicle is shut off and restarted, you must press the
transaxle control switch to cancel overdrive operation if driving in
overdrive is not desired.
2 (Second)
Use 2 (Second) to start-up on
slippery roads or to provide
additional engine braking on
downgrades.
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position. The TCIL (O/D OFF) will illuminate in the
(Overdrive) mode, press the transaxle control switch
(Overdrive) and is useful