2006 Lexus GS 300 Owners Manual - Page 382

STARTING AND DRIVING "4" (fourth range): The most suitable gear is automatically selected between first and fourth gears according to vehicle speed and driving conditions. In the "4" (fourth range) position, the automatic transmission system will select the most suitable gear to handle current running conditions such as hill climbing, hard towing, etc. "3" (third range): The most suitable gear is automatically selected between first and third gears according to vehicle speed and driving conditions. This range is best used when stronger engine braking is necessary. "2" (second range): First or second gear will automatically be selected according to vehicle speed and driving conditions. This range is to be used when engine braking stronger than that of the "3" (third range) position is necessary. "1" (first range): This gear is fixed in first regardless of vehicle speed or driving conditions. This range is to be used when maximum engine braking is necessary. If you attempt to downshift the transmission when it is not possible to downshift due to high vehicle speed, a warning tone sounds twice. D Maximum allowable speeds To get on a highway or to pass slower traffic, maximum acceleration may be necessary. Make sure you observe the following maximum allowable speeds in each range: GS430: range 1 2 3 range 1 2 3 range 1 2 3 km/h (mph) 57 (35) 97 (60) 141 (88) km/h (mph) 54 (33) 93 (58) 137 (85) km/h (mph) 52 (32) 90 (56) 131 (81) GS300 (2WD): GS300 (4WD): NOTICE Do not downshift if you are going faster than the maximum allowable speed for the next lower range. 358