2006 Lexus GS 300 Owners Manual - Page 1009

STARTING AND DRIVING D AI (Artificial Intelligence) shifting control AI shifting control selects the most suitable shift range automatically according to the driver's operation and driving condition. AI shifting control operates automatically with the selector lever in the "D" position. When the lever is moved to the "S" position, this function will be canceled. Shifting control on the slope: On inclines, you can drive smoothly with reduced shifting quantity. On declines, the vehicle will shift down automatically to obtain optimum engine braking and reduce the driver's foot braking load. Automatic shifting point change control: The automatic shifting point control is controlled in the following way to respond to the driver's operation. D When the accelerator is depressed quickly, the vehicle downshifts rapidly in order to improve acceleration. D When the accelerator is quickly released, the gear position is maintained in order to improve engine braking and reacceleration capabilities. D During hard deceleration the vehicle downshifts rapidly in order to improve engine braking and reacceleration capabilities. " 1 2 3 4 "S" mode position Upshifting Downshifting Shift range position indicator (b) Driving in "S" mode G31025 You can change the shift range position in the "S" mode. The shift range position can be switched between "6" (sixth range) and "1" (first range) by moving the selector lever up to the "+" side or down to the "-" side. The first shift range position is "5" (fifth range) when the selector lever is shifted to the "S" position. However, if you move the lever to the "S" position in AI shifting control, "5" (fifth range), "4" (fourth range) or "3" (third range) will be the first shift range. This is because the suitable shift range is selected depending on the driving condition. 363