Increased Load/Reduced Torque Compensation

To aid performance and driveability in the high range economy mode, the auto gear box control unit has 3 adaptive shift and lock-up maps. These maps delay upshifts and torque converter lock-up similar to the sport mode if the inputs from the engine indicate:

• A sustained high load on the engine, such as occurs when the vehicle is ascending a steep gradient or towing a trailer.
• The auto gear box control unit monitors the engine inputs and selects the most appropriate adaptive map for the prevailing conditions.
• On vehicles from 1999 model year, a lower than normal engine torque, such as occurs at altitude or high ambient temperatures.