Jeep 2006 Liberty - Manual (Page 230)

WARNING!
Do not coast in N (Neutral) and never turn off the
ignition to coast down a hill. These are unsafe prac-
tices that limit your response to changing traffic or
road conditions. You might lose control of the vehicle.
Overdrive (O/D)
For most city and highway driving. The transmission
contains an electronically controlled Overdrive, and will
automatically shift from D (Drive) to O/D (Overdrive) if
the following conditions are present:
• The transmission selector is in D (Drive).
• The O/D OFF button has not been activated.
• Vehicle speed is above approximately 30 mph (48 km/h).
• Transmission has reached normal operating temperature.
When frequent transmission shifting occurs while using
Overdrive, such as when operating the vehicle under
heavy load conditions (for example, in hilly terrain,
strong head winds, or trailer towing), turning off over-
drive will improve performance and extend transmission
life by reducing excessive shifting and heat buildup.
O/D Off Button
230 STARTING AND OPERATING