Lincoln 2010 MKZ Owner's Manual page 213

Driving
Overdrive cancel with grade assist is designed to provide optimal gear
selection in hilly terrain or mountainous areas. It is recommended that
you return to O/D (overdrive mode) on flat terrain to provide the best
fuel economy and transmission function.
To return to O/D (overdrive mode), move the shift lever back from M
to D.
• The overdrive cancel and grade assist lamp in the instrument cluster
will not be illuminated.
• The transmission will operate in gears one through six.
O/D (overdrive mode) is automatically returned each time the ignition is
off.
Understanding your SelectShift™ Automatic Transmission
gearshift lever (SST)
This vehicle is equipped with a
SelectShift™ Automatic
Transmission (SST) gearshift lever.
SST is an automatic transmission
with the ability for the driver to
change gears up or down (without a
clutch) as desired. By moving the
gearshift lever from drive position
(D) to the right into Manual (M)
you now have control of selecting
the gear you desire.
Initially when moving the lever to
the manual mode (M), the message
center display on the instrument
cluster will show D and the SST
light will illuminate. This mode is
Overdrive Cancel and Grade Assist.
Only by moving the lever in the forward (-) or backward (+) position will
the transmission utilize the manual mode for select shifting.
213
2010 MKZ (378)
Owners Guide, 1st Printing
USA (fus)