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• The overdrive cancel and grade
assist lamp in the instrument
cluster is illuminated.
2. Grade Assist
• Improves driving experience in hilly terrain or mountainous areas by
providing additional grade (engine) braking and extends lower gear
operation on uphill climbs.
• Provides additional engine braking through the automatic transmission
shift strategy which reacts to vehicle inputs (vehicle acceleration,
accelerator pedal, brake pedal and vehicle speed).
• Allows the transmission to select gears that will provide the desired
engine braking based on the vehicle inputs mentioned above. This will
increase engine RPM during engine braking.
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 ЉMЉ
to ЉD.Љ
• 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.
2009 MKS (mks)
Owners Guide (post-2002-fmt)
USA (fus)
Driving
225