1999 Lexus GS 400 Owners Manual - Page 300

STARTING AND DRIVING "The shift position is displayed on the instrument cluster. GS300: P: Parking, engine starting and key removal position R: Reverse position N: Neutral position D: Normal driving position (Shifting into overdrive possible) 4: Position for engine braking (Shifting into overdrive not possible) When the cruise control is being used, even if you downshift from "D" to "4", engine braking will not be applied because the cruise control is not cancelled. For the operation to decrease the vehicle speed, see page 300. 3, 2: Position for more powerful engine braking L: Position for maximum engine braking GS400: P: Parking, engine starting and key removal position R: Reverse position N: Neutral position D: Normal driving position (Shifting into overdrive possible) M: Position for manual shifting up or downshifting When the cruise control is being used, even if you downshift from "D" to "4", engine braking will not be applied because the cruise control is not cancelled. For the operation to decrease the vehicle speed, see page 300. 3, 2: Position for more powerful engine braking L: Position for maximum engine braking 280