2003 Lexus GS 300 Owners Manual - Page 209

STARTING AND DRIVING (f) Parking (g) Good driving practice If the transmission repeatedly shifts up and down between the fourth and overdrive gears when climbing a gentle slope, shift the selector lever to the "4" position. Be sure to shift the selector lever to the "D" position after climbing the slope. 31G034c CAUTION Always keep your foot on the brake pedal while stopped with the engine running. This prevents the vehicle from creeping. " 1 Brake pedal 2 Parking brake pedal 3 "P" (Park) position 1. Bring the vehicle to a complete stop. 2. Depress the parking brake pedal fully. 3. With the brake pedal held down with your foot, shift the selector lever to the "P" position. NOTICE Always use the brake pedal or the parking brake to hold the vehicle on an upgrade. Do not attempt to hold the vehicle using the accelerator pedal, as this can cause the transmission to overheat. CAUTION Never attempt to move the selector lever into "P" under any circumstances while the vehicle is moving. Serious mechanical damage and loss of vehicle control may result. 188